reuse node repo merge buffers

fix format


missing close call

.github/workflows/basic-check.yml

@@ -3,10 +3,10 @@ on: [push, pull_request]
 jobs:
   build:
     name: Go CI
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     strategy:
       matrix:
-        go: [1.14, 1.15]
+        go: [1.16]
     steps:
       - name: Set up Go
         uses: actions/setup-go@v2

.github/workflows/create-release.yml

@@ -0,0 +1,52 @@
+name: Create release
+on:
+  workflow_dispatch:
+    inputs:
+      note:
+        description: 'Note'
+        required: false
+        default: ''
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        go: [1.16]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.go }}
+    - name: Checkout source
+      uses: actions/checkout@v2
+    - name: Install coreutils, ICU for macOS
+      if: matrix.os == 'macos-latest'
+      run: brew install coreutils icu4c
+    - name: Build executables
+      env:
+        GO111MODULE: "on"
+      run: go build -trimpath -o artifacts/ --tags use_icu_normalization .
+    - name: SHA256 sum
+      run: sha256sum -b artifacts/* > artifacts/chain.sha256
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v2
+      with:
+        name: chain-${{ matrix.os }}
+        path: artifacts/*
+
+
+# for releases see https://trstringer.com/github-actions-create-release-upload-artifacts/
+
+# AWS S3 support:
+#    - name: Upload to Amazon S3
+#      uses: ItsKarma/aws-cli@v1.70.0
+#      with:
+#        args: s3 sync .release s3://my-bucket-name
+#      env:
+#        # Make sure to add the secrets in the repo settings page
+#        # AWS_REGION is set to us-east-1 by default
+#        AWS_ACCESS_KEY_ID: $
+#        AWS_SECRET_ACCESS_KEY: $
+#        AWS_REGION: us-east-1

.github/workflows/full-sync-part-1.yml

@@ -0,0 +1,34 @@
+name: Full Sync From 0
+
+on:
+  workflow_dispatch:
+    inputs:
+      note:
+        description: 'Note'
+        required: false
+        default: ''
+
+jobs:
+  build:
+    name: Go CI
+    runs-on: self-hosted
+    strategy:
+      matrix:
+        go: [1.16]
+    steps:
+      - run: |
+          echo "Note ${{ github.event.inputs.note }}!"
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go }}
+      - name: Checkout source
+        uses: actions/checkout@v2
+      - name: Build chain
+        run: go build --tags use_icu_normalization .
+      - name: Create datadir
+        run: echo "TEMP_DATA_DIR=$(mktemp -d)" >> $GITHUB_ENV
+      - name: Run chain
+        run: ./chain --datadir=${{env.TEMP_DATA_DIR}}/data --logdir=${{env.TEMP_DATA_DIR}}/logs --connect=127.0.0.1 --norpc
+      - name: Remove datadir
+        run: rm -rf ${{env.TEMP_DATA_DIR}}

.github/workflows/full-sync-part-2.yml

@@ -0,0 +1,36 @@
+name: Full Sync From 814k
+
+on:
+  workflow_dispatch:
+    inputs:
+      note:
+        description: 'Note'
+        required: false
+        default: ''
+
+jobs:
+  build:
+    name: Go CI
+    runs-on: self-hosted
+    strategy:
+      matrix:
+        go: [1.16]
+    steps:
+      - run: |
+          echo "Note ${{ github.event.inputs.note }}!"
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go }}
+      - name: Checkout source
+        uses: actions/checkout@v2
+      - name: Build chain
+        run: go build --tags use_icu_normalization .
+      - name: Create datadir
+        run: echo "TEMP_DATA_DIR=$(mktemp -d)" >> $GITHUB_ENV
+      - name: Copy initial data
+        run: cp -r /home/lbry/chain_814k/* ${{env.TEMP_DATA_DIR}}
+      - name: Run chain
+        run: ./chain --datadir=${{env.TEMP_DATA_DIR}}/data --logdir=${{env.TEMP_DATA_DIR}}/logs --connect=127.0.0.1 --norpc
+      - name: Remove datadir
+        run: rm -rf ${{env.TEMP_DATA_DIR}}

.gitignore

@@ -33,6 +33,18 @@ _testmain.go
 
 *.exe
 
+.DS_Store
+
 # Code coverage files
 profile.tmp
 profile.cov
+
+# IDE
+.idea
+.vscode
+
+# Binaries
+btcd
+btcctl
+chain
+chainctl

Dockerfile

@@ -38,4 +38,4 @@ VOLUME ["/root/.btcd"]
 
 EXPOSE 8333 8334
 
-ENTRYPOINT ["btcd"]
+ENTRYPOINT ["chain"]

addrmgr/knownaddress_test.go

@@ -1,114 +0,0 @@
-// Copyright (c) 2013-2015 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package addrmgr_test
-
-import (
-	"math"
-	"testing"
-	"time"
-
-	"github.com/btcsuite/btcd/addrmgr"
-	"github.com/btcsuite/btcd/wire"
-)
-
-func TestChance(t *testing.T) {
-	now := time.Unix(time.Now().Unix(), 0)
-	var tests = []struct {
-		addr     *addrmgr.KnownAddress
-		expected float64
-	}{
-		{
-			//Test normal case
-			addrmgr.TstNewKnownAddress(&wire.NetAddress{Timestamp: now.Add(-35 * time.Second)},
-				0, time.Now().Add(-30*time.Minute), time.Now(), false, 0),
-			1.0,
-		}, {
-			//Test case in which lastseen < 0
-			addrmgr.TstNewKnownAddress(&wire.NetAddress{Timestamp: now.Add(20 * time.Second)},
-				0, time.Now().Add(-30*time.Minute), time.Now(), false, 0),
-			1.0,
-		}, {
-			//Test case in which lastattempt < 0
-			addrmgr.TstNewKnownAddress(&wire.NetAddress{Timestamp: now.Add(-35 * time.Second)},
-				0, time.Now().Add(30*time.Minute), time.Now(), false, 0),
-			1.0 * .01,
-		}, {
-			//Test case in which lastattempt < ten minutes
-			addrmgr.TstNewKnownAddress(&wire.NetAddress{Timestamp: now.Add(-35 * time.Second)},
-				0, time.Now().Add(-5*time.Minute), time.Now(), false, 0),
-			1.0 * .01,
-		}, {
-			//Test case with several failed attempts.
-			addrmgr.TstNewKnownAddress(&wire.NetAddress{Timestamp: now.Add(-35 * time.Second)},
-				2, time.Now().Add(-30*time.Minute), time.Now(), false, 0),
-			1 / 1.5 / 1.5,
-		},
-	}
-
-	err := .0001
-	for i, test := range tests {
-		chance := addrmgr.TstKnownAddressChance(test.addr)
-		if math.Abs(test.expected-chance) >= err {
-			t.Errorf("case %d: got %f, expected %f", i, chance, test.expected)
-		}
-	}
-}
-
-func TestIsBad(t *testing.T) {
-	now := time.Unix(time.Now().Unix(), 0)
-	future := now.Add(35 * time.Minute)
-	monthOld := now.Add(-43 * time.Hour * 24)
-	secondsOld := now.Add(-2 * time.Second)
-	minutesOld := now.Add(-27 * time.Minute)
-	hoursOld := now.Add(-5 * time.Hour)
-	zeroTime := time.Time{}
-
-	futureNa := &wire.NetAddress{Timestamp: future}
-	minutesOldNa := &wire.NetAddress{Timestamp: minutesOld}
-	monthOldNa := &wire.NetAddress{Timestamp: monthOld}
-	currentNa := &wire.NetAddress{Timestamp: secondsOld}
-
-	//Test addresses that have been tried in the last minute.
-	if addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(futureNa, 3, secondsOld, zeroTime, false, 0)) {
-		t.Errorf("test case 1: addresses that have been tried in the last minute are not bad.")
-	}
-	if addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(monthOldNa, 3, secondsOld, zeroTime, false, 0)) {
-		t.Errorf("test case 2: addresses that have been tried in the last minute are not bad.")
-	}
-	if addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(currentNa, 3, secondsOld, zeroTime, false, 0)) {
-		t.Errorf("test case 3: addresses that have been tried in the last minute are not bad.")
-	}
-	if addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(currentNa, 3, secondsOld, monthOld, true, 0)) {
-		t.Errorf("test case 4: addresses that have been tried in the last minute are not bad.")
-	}
-	if addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(currentNa, 2, secondsOld, secondsOld, true, 0)) {
-		t.Errorf("test case 5: addresses that have been tried in the last minute are not bad.")
-	}
-
-	//Test address that claims to be from the future.
-	if !addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(futureNa, 0, minutesOld, hoursOld, true, 0)) {
-		t.Errorf("test case 6: addresses that claim to be from the future are bad.")
-	}
-
-	//Test address that has not been seen in over a month.
-	if !addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(monthOldNa, 0, minutesOld, hoursOld, true, 0)) {
-		t.Errorf("test case 7: addresses more than a month old are bad.")
-	}
-
-	//It has failed at least three times and never succeeded.
-	if !addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(minutesOldNa, 3, minutesOld, zeroTime, true, 0)) {
-		t.Errorf("test case 8: addresses that have never succeeded are bad.")
-	}
-
-	//It has failed ten times in the last week
-	if !addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(minutesOldNa, 10, minutesOld, monthOld, true, 0)) {
-		t.Errorf("test case 9: addresses that have not succeeded in too long are bad.")
-	}
-
-	//Test an address that should work.
-	if addrmgr.TstKnownAddressIsBad(addrmgr.TstNewKnownAddress(minutesOldNa, 2, minutesOld, hoursOld, true, 0)) {
-		t.Errorf("test case 10: This should be a valid address.")
-	}
-}

blockchain/bench_test.go

@@ -1,31 +0,0 @@
-// Copyright (c) 2015 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain
-
-import (
-	"testing"
-
-	"github.com/btcsuite/btcutil"
-)
-
-// BenchmarkIsCoinBase performs a simple benchmark against the IsCoinBase
-// function.
-func BenchmarkIsCoinBase(b *testing.B) {
-	tx, _ := btcutil.NewBlock(&Block100000).Tx(1)
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		IsCoinBase(tx)
-	}
-}
-
-// BenchmarkIsCoinBaseTx performs a simple benchmark against the IsCoinBaseTx
-// function.
-func BenchmarkIsCoinBaseTx(b *testing.B) {
-	tx := Block100000.Transactions[1]
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		IsCoinBaseTx(tx)
-	}
-}

blockchain/blockindex.go

@@ -93,6 +93,7 @@ type blockNode struct {
 	nonce      uint32
 	timestamp  int64
 	merkleRoot chainhash.Hash
+	claimTrie  chainhash.Hash
 
 	// status is a bitfield representing the validation state of the block. The
 	// status field, unlike the other fields, may be written to and so should
@@ -114,6 +115,7 @@ func initBlockNode(node *blockNode, blockHeader *wire.BlockHeader, parent *block
 		nonce:      blockHeader.Nonce,
 		timestamp:  blockHeader.Timestamp.Unix(),
 		merkleRoot: blockHeader.MerkleRoot,
+		claimTrie:  blockHeader.ClaimTrie,
 	}
 	if parent != nil {
 		node.parent = parent
@@ -144,6 +146,7 @@ func (node *blockNode) Header() wire.BlockHeader {
 		Version:    node.version,
 		PrevBlock:  *prevHash,
 		MerkleRoot: node.merkleRoot,
+		ClaimTrie:  node.claimTrie,
 		Timestamp:  time.Unix(node.timestamp, 0),
 		Bits:       node.bits,
 		Nonce:      node.nonce,

blockchain/chain.go

@@ -17,6 +17,8 @@ import (
 	"github.com/btcsuite/btcd/txscript"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcutil"
+
+	"github.com/btcsuite/btcd/claimtrie"
 )
 
 const (
@@ -180,6 +182,8 @@ type BlockChain struct {
 	// certain blockchain events.
 	notificationsLock sync.RWMutex
 	notifications     []NotificationCallback
+
+	claimTrie *claimtrie.ClaimTrie
 }
 
 // HaveBlock returns whether or not the chain instance has the block represented
@@ -571,7 +575,8 @@ func (b *BlockChain) connectBlock(node *blockNode, block *btcutil.Block,
 	}
 
 	// No warnings about unknown rules until the chain is current.
-	if b.isCurrent() {
+	current := b.isCurrent()
+	if current {
 		// Warn if any unknown new rules are either about to activate or
 		// have already been activated.
 		if err := b.warnUnknownRuleActivations(node); err != nil {
@@ -579,6 +584,13 @@ func (b *BlockChain) connectBlock(node *blockNode, block *btcutil.Block,
 		}
 	}
 
+	// Handle LBRY Claim Scripts
+	if b.claimTrie != nil {
+		if err := b.ParseClaimScripts(block, node, view, false, current); err != nil {
+			return ruleError(ErrBadClaimTrie, err.Error())
+		}
+	}
+
 	// Write any block status changes to DB before updating best state.
 	err := b.index.flushToDB()
 	if err != nil {
@@ -761,6 +773,10 @@ func (b *BlockChain) disconnectBlock(node *blockNode, block *btcutil.Block, view
 		return err
 	}
 
+	if err = b.claimTrie.ResetHeight(node.parent.height); err != nil {
+		return err
+	}
+
 	// Prune fully spent entries and mark all entries in the view unmodified
 	// now that the modifications have been committed to the database.
 	view.commit()
@@ -1208,7 +1224,7 @@ func (b *BlockChain) connectBestChain(node *blockNode, block *btcutil.Block, fla
 // factors are used to guess, but the key factors that allow the chain to
 // believe it is current are:
 //  - Latest block height is after the latest checkpoint (if enabled)
-//  - Latest block has a timestamp newer than 24 hours ago
+//  - Latest block has a timestamp newer than ~6 hours ago (as LBRY block time is one fourth of bitcoin)
 //
 // This function MUST be called with the chain state lock held (for reads).
 func (b *BlockChain) isCurrent() bool {
@@ -1219,13 +1235,13 @@ func (b *BlockChain) isCurrent() bool {
 		return false
 	}
 
-	// Not current if the latest best block has a timestamp before 24 hours
+	// Not current if the latest best block has a timestamp before 7 hours
 	// ago.
 	//
 	// The chain appears to be current if none of the checks reported
 	// otherwise.
-	minus24Hours := b.timeSource.AdjustedTime().Add(-24 * time.Hour).Unix()
-	return b.bestChain.Tip().timestamp >= minus24Hours
+	hours := b.timeSource.AdjustedTime().Add(-7 * time.Hour).Unix()
+	return b.bestChain.Tip().timestamp >= hours
 }
 
 // IsCurrent returns whether or not the chain believes it is current.  Several
@@ -1614,6 +1630,11 @@ func (b *BlockChain) LocateHeaders(locator BlockLocator, hashStop *chainhash.Has
 	return headers
 }
 
+// ClaimTrie returns the claimTrie associated wit hthe chain.
+func (b *BlockChain) ClaimTrie() *claimtrie.ClaimTrie {
+	return b.claimTrie
+}
+
 // IndexManager provides a generic interface that the is called when blocks are
 // connected and disconnected to and from the tip of the main chain for the
 // purpose of supporting optional indexes.
@@ -1700,6 +1721,8 @@ type Config struct {
 	// This field can be nil if the caller is not interested in using a
 	// signature cache.
 	HashCache *txscript.HashCache
+
+	ClaimTrie *claimtrie.ClaimTrie
 }
 
 // New returns a BlockChain instance using the provided configuration details.
@@ -1736,7 +1759,6 @@ func New(config *Config) (*BlockChain, error) {
 	params := config.ChainParams
 	targetTimespan := int64(params.TargetTimespan / time.Second)
 	targetTimePerBlock := int64(params.TargetTimePerBlock / time.Second)
-	adjustmentFactor := params.RetargetAdjustmentFactor
 	b := BlockChain{
 		checkpoints:         config.Checkpoints,
 		checkpointsByHeight: checkpointsByHeight,
@@ -1745,8 +1767,8 @@ func New(config *Config) (*BlockChain, error) {
 		timeSource:          config.TimeSource,
 		sigCache:            config.SigCache,
 		indexManager:        config.IndexManager,
-		minRetargetTimespan: targetTimespan / adjustmentFactor,
-		maxRetargetTimespan: targetTimespan * adjustmentFactor,
+		minRetargetTimespan: targetTimespan - (targetTimespan / 8),
+		maxRetargetTimespan: targetTimespan + (targetTimespan / 2),
 		blocksPerRetarget:   int32(targetTimespan / targetTimePerBlock),
 		index:               newBlockIndex(config.DB, params),
 		hashCache:           config.HashCache,
@@ -1755,6 +1777,7 @@ func New(config *Config) (*BlockChain, error) {
 		prevOrphans:         make(map[chainhash.Hash][]*orphanBlock),
 		warningCaches:       newThresholdCaches(vbNumBits),
 		deploymentCaches:    newThresholdCaches(chaincfg.DefinedDeployments),
+		claimTrie:           config.ClaimTrie,
 	}
 
 	// Initialize the chain state from the passed database.  When the db
@@ -1764,6 +1787,20 @@ func New(config *Config) (*BlockChain, error) {
 		return nil, err
 	}
 
+	// Helper function to insert the output in genesis block in to the
+	// transaction database.
+	fn := func(dbTx database.Tx) error {
+		genesisBlock := btcutil.NewBlock(b.chainParams.GenesisBlock)
+		view := NewUtxoViewpoint()
+		if err := view.connectTransactions(genesisBlock, nil); err != nil {
+			return err
+		}
+		return dbPutUtxoView(dbTx, view)
+	}
+	if err := b.db.Update(fn); err != nil {
+		return nil, err
+	}
+
 	// Perform any upgrades to the various chain-specific buckets as needed.
 	if err := b.maybeUpgradeDbBuckets(config.Interrupt); err != nil {
 		return nil, err
@@ -1783,6 +1820,14 @@ func New(config *Config) (*BlockChain, error) {
 		return nil, err
 	}
 
+	if b.claimTrie != nil {
+		err := rebuildMissingClaimTrieData(&b, config.Interrupt)
+		if err != nil {
+			b.claimTrie.Close()
+			return nil, err
+		}
+	}
+
 	bestNode := b.bestChain.Tip()
 	log.Infof("Chain state (height %d, hash %v, totaltx %d, work %v)",
 		bestNode.height, bestNode.hash, b.stateSnapshot.TotalTxns,
@@ -1790,3 +1835,63 @@ func New(config *Config) (*BlockChain, error) {
 
 	return &b, nil
 }
+
+func rebuildMissingClaimTrieData(b *BlockChain, done <-chan struct{}) error {
+	target := b.bestChain.Height()
+	if b.claimTrie.Height() == target {
+		return nil
+	}
+	if b.claimTrie.Height() > target {
+		return b.claimTrie.ResetHeight(target)
+	}
+
+	start := time.Now()
+	lastReport := time.Now()
+	// TODO: move this view inside the loop (or recreate it every 5 sec.)
+	// as accumulating all inputs has potential to use a huge amount of RAM
+	// but we need to get the spent inputs working for that to be possible
+	view := NewUtxoViewpoint()
+	for h := int32(0); h < target; h++ {
+		select {
+		case <-done:
+			return fmt.Errorf("rebuild unfinished at height %d", b.claimTrie.Height())
+		default:
+		}
+
+		n := b.bestChain.NodeByHeight(h + 1)
+
+		var block *btcutil.Block
+		err := b.db.View(func(dbTx database.Tx) error {
+			var err error
+			block, err = dbFetchBlockByNode(dbTx, n)
+			return err
+		})
+		if err != nil {
+			return err
+		}
+
+		err = view.fetchInputUtxos(b.db, block)
+		if err != nil {
+			return err
+		}
+
+		err = view.connectTransactions(block, nil)
+		if err != nil {
+			return err
+		}
+
+		if h >= b.claimTrie.Height() {
+			err = b.ParseClaimScripts(block, n, view, true, false)
+			if err != nil {
+				return err
+			}
+		}
+		if time.Since(lastReport) > time.Second*5 {
+			lastReport = time.Now()
+			log.Infof("Rebuilding claim trie data to %d. At: %d", target, h)
+		}
+	}
+	log.Infof("Completed rebuilding claim trie data to %d. Took %s ",
+		b.claimTrie.Height(), time.Since(start))
+	return nil
+}

blockchain/chain_test.go

@@ -1,966 +0,0 @@
-// Copyright (c) 2013-2017 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain
-
-import (
-	"reflect"
-	"testing"
-	"time"
-
-	"github.com/btcsuite/btcd/chaincfg"
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
-	"github.com/btcsuite/btcd/wire"
-	"github.com/btcsuite/btcutil"
-)
-
-// TestHaveBlock tests the HaveBlock API to ensure proper functionality.
-func TestHaveBlock(t *testing.T) {
-	// Load up blocks such that there is a side chain.
-	// (genesis block) -> 1 -> 2 -> 3 -> 4
-	//                          \-> 3a
-	testFiles := []string{
-		"blk_0_to_4.dat.bz2",
-		"blk_3A.dat.bz2",
-	}
-
-	var blocks []*btcutil.Block
-	for _, file := range testFiles {
-		blockTmp, err := loadBlocks(file)
-		if err != nil {
-			t.Errorf("Error loading file: %v\n", err)
-			return
-		}
-		blocks = append(blocks, blockTmp...)
-	}
-
-	// Create a new database and chain instance to run tests against.
-	chain, teardownFunc, err := chainSetup("haveblock",
-		&chaincfg.MainNetParams)
-	if err != nil {
-		t.Errorf("Failed to setup chain instance: %v", err)
-		return
-	}
-	defer teardownFunc()
-
-	// Since we're not dealing with the real block chain, set the coinbase
-	// maturity to 1.
-	chain.TstSetCoinbaseMaturity(1)
-
-	for i := 1; i < len(blocks); i++ {
-		_, isOrphan, err := chain.ProcessBlock(blocks[i], BFNone)
-		if err != nil {
-			t.Errorf("ProcessBlock fail on block %v: %v\n", i, err)
-			return
-		}
-		if isOrphan {
-			t.Errorf("ProcessBlock incorrectly returned block %v "+
-				"is an orphan\n", i)
-			return
-		}
-	}
-
-	// Insert an orphan block.
-	_, isOrphan, err := chain.ProcessBlock(btcutil.NewBlock(&Block100000),
-		BFNone)
-	if err != nil {
-		t.Errorf("Unable to process block: %v", err)
-		return
-	}
-	if !isOrphan {
-		t.Errorf("ProcessBlock indicated block is an not orphan when " +
-			"it should be\n")
-		return
-	}
-
-	tests := []struct {
-		hash string
-		want bool
-	}{
-		// Genesis block should be present (in the main chain).
-		{hash: chaincfg.MainNetParams.GenesisHash.String(), want: true},
-
-		// Block 3a should be present (on a side chain).
-		{hash: "00000000474284d20067a4d33f6a02284e6ef70764a3a26d6a5b9df52ef663dd", want: true},
-
-		// Block 100000 should be present (as an orphan).
-		{hash: "000000000003ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506", want: true},
-
-		// Random hashes should not be available.
-		{hash: "123", want: false},
-	}
-
-	for i, test := range tests {
-		hash, err := chainhash.NewHashFromStr(test.hash)
-		if err != nil {
-			t.Errorf("NewHashFromStr: %v", err)
-			continue
-		}
-
-		result, err := chain.HaveBlock(hash)
-		if err != nil {
-			t.Errorf("HaveBlock #%d unexpected error: %v", i, err)
-			return
-		}
-		if result != test.want {
-			t.Errorf("HaveBlock #%d got %v want %v", i, result,
-				test.want)
-			continue
-		}
-	}
-}
-
-// TestCalcSequenceLock tests the LockTimeToSequence function, and the
-// CalcSequenceLock method of a Chain instance. The tests exercise several
-// combinations of inputs to the CalcSequenceLock function in order to ensure
-// the returned SequenceLocks are correct for each test instance.
-func TestCalcSequenceLock(t *testing.T) {
-	netParams := &chaincfg.SimNetParams
-
-	// We need to activate CSV in order to test the processing logic, so
-	// manually craft the block version that's used to signal the soft-fork
-	// activation.
-	csvBit := netParams.Deployments[chaincfg.DeploymentCSV].BitNumber
-	blockVersion := int32(0x20000000 | (uint32(1) << csvBit))
-
-	// Generate enough synthetic blocks to activate CSV.
-	chain := newFakeChain(netParams)
-	node := chain.bestChain.Tip()
-	blockTime := node.Header().Timestamp
-	numBlocksToActivate := (netParams.MinerConfirmationWindow * 3)
-	for i := uint32(0); i < numBlocksToActivate; i++ {
-		blockTime = blockTime.Add(time.Second)
-		node = newFakeNode(node, blockVersion, 0, blockTime)
-		chain.index.AddNode(node)
-		chain.bestChain.SetTip(node)
-	}
-
-	// Create a utxo view with a fake utxo for the inputs used in the
-	// transactions created below.  This utxo is added such that it has an
-	// age of 4 blocks.
-	targetTx := btcutil.NewTx(&wire.MsgTx{
-		TxOut: []*wire.TxOut{{
-			PkScript: nil,
-			Value:    10,
-		}},
-	})
-	utxoView := NewUtxoViewpoint()
-	utxoView.AddTxOuts(targetTx, int32(numBlocksToActivate)-4)
-	utxoView.SetBestHash(&node.hash)
-
-	// Create a utxo that spends the fake utxo created above for use in the
-	// transactions created in the tests.  It has an age of 4 blocks.  Note
-	// that the sequence lock heights are always calculated from the same
-	// point of view that they were originally calculated from for a given
-	// utxo.  That is to say, the height prior to it.
-	utxo := wire.OutPoint{
-		Hash:  *targetTx.Hash(),
-		Index: 0,
-	}
-	prevUtxoHeight := int32(numBlocksToActivate) - 4
-
-	// Obtain the median time past from the PoV of the input created above.
-	// The MTP for the input is the MTP from the PoV of the block *prior*
-	// to the one that included it.
-	medianTime := node.RelativeAncestor(5).CalcPastMedianTime().Unix()
-
-	// The median time calculated from the PoV of the best block in the
-	// test chain.  For unconfirmed inputs, this value will be used since
-	// the MTP will be calculated from the PoV of the yet-to-be-mined
-	// block.
-	nextMedianTime := node.CalcPastMedianTime().Unix()
-	nextBlockHeight := int32(numBlocksToActivate) + 1
-
-	// Add an additional transaction which will serve as our unconfirmed
-	// output.
-	unConfTx := &wire.MsgTx{
-		TxOut: []*wire.TxOut{{
-			PkScript: nil,
-			Value:    5,
-		}},
-	}
-	unConfUtxo := wire.OutPoint{
-		Hash:  unConfTx.TxHash(),
-		Index: 0,
-	}
-
-	// Adding a utxo with a height of 0x7fffffff indicates that the output
-	// is currently unmined.
-	utxoView.AddTxOuts(btcutil.NewTx(unConfTx), 0x7fffffff)
-
-	tests := []struct {
-		tx      *wire.MsgTx
-		view    *UtxoViewpoint
-		mempool bool
-		want    *SequenceLock
-	}{
-		// A transaction of version one should disable sequence locks
-		// as the new sequence number semantics only apply to
-		// transactions version 2 or higher.
-		{
-			tx: &wire.MsgTx{
-				Version: 1,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(false, 3),
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     -1,
-				BlockHeight: -1,
-			},
-		},
-		// A transaction with a single input with max sequence number.
-		// This sequence number has the high bit set, so sequence locks
-		// should be disabled.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         wire.MaxTxInSequenceNum,
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     -1,
-				BlockHeight: -1,
-			},
-		},
-		// A transaction with a single input whose lock time is
-		// expressed in seconds.  However, the specified lock time is
-		// below the required floor for time based lock times since
-		// they have time granularity of 512 seconds.  As a result, the
-		// seconds lock-time should be just before the median time of
-		// the targeted block.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(true, 2),
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     medianTime - 1,
-				BlockHeight: -1,
-			},
-		},
-		// A transaction with a single input whose lock time is
-		// expressed in seconds.  The number of seconds should be 1023
-		// seconds after the median past time of the last block in the
-		// chain.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(true, 1024),
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     medianTime + 1023,
-				BlockHeight: -1,
-			},
-		},
-		// A transaction with multiple inputs.  The first input has a
-		// lock time expressed in seconds.  The second input has a
-		// sequence lock in blocks with a value of 4.  The last input
-		// has a sequence number with a value of 5, but has the disable
-		// bit set.  So the first lock should be selected as it's the
-		// latest lock that isn't disabled.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(true, 2560),
-				}, {
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(false, 4),
-				}, {
-					PreviousOutPoint: utxo,
-					Sequence: LockTimeToSequence(false, 5) |
-						wire.SequenceLockTimeDisabled,
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     medianTime + (5 << wire.SequenceLockTimeGranularity) - 1,
-				BlockHeight: prevUtxoHeight + 3,
-			},
-		},
-		// Transaction with a single input.  The input's sequence number
-		// encodes a relative lock-time in blocks (3 blocks).  The
-		// sequence lock should  have a value of -1 for seconds, but a
-		// height of 2 meaning it can be included at height 3.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(false, 3),
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     -1,
-				BlockHeight: prevUtxoHeight + 2,
-			},
-		},
-		// A transaction with two inputs with lock times expressed in
-		// seconds.  The selected sequence lock value for seconds should
-		// be the time further in the future.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(true, 5120),
-				}, {
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(true, 2560),
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     medianTime + (10 << wire.SequenceLockTimeGranularity) - 1,
-				BlockHeight: -1,
-			},
-		},
-		// A transaction with two inputs with lock times expressed in
-		// blocks.  The selected sequence lock value for blocks should
-		// be the height further in the future, so a height of 10
-		// indicating it can be included at height 11.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(false, 1),
-				}, {
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(false, 11),
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     -1,
-				BlockHeight: prevUtxoHeight + 10,
-			},
-		},
-		// A transaction with multiple inputs.  Two inputs are time
-		// based, and the other two are block based. The lock lying
-		// further into the future for both inputs should be chosen.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(true, 2560),
-				}, {
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(true, 6656),
-				}, {
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(false, 3),
-				}, {
-					PreviousOutPoint: utxo,
-					Sequence:         LockTimeToSequence(false, 9),
-				}},
-			},
-			view: utxoView,
-			want: &SequenceLock{
-				Seconds:     medianTime + (13 << wire.SequenceLockTimeGranularity) - 1,
-				BlockHeight: prevUtxoHeight + 8,
-			},
-		},
-		// A transaction with a single unconfirmed input.  As the input
-		// is confirmed, the height of the input should be interpreted
-		// as the height of the *next* block.  So, a 2 block relative
-		// lock means the sequence lock should be for 1 block after the
-		// *next* block height, indicating it can be included 2 blocks
-		// after that.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: unConfUtxo,
-					Sequence:         LockTimeToSequence(false, 2),
-				}},
-			},
-			view:    utxoView,
-			mempool: true,
-			want: &SequenceLock{
-				Seconds:     -1,
-				BlockHeight: nextBlockHeight + 1,
-			},
-		},
-		// A transaction with a single unconfirmed input.  The input has
-		// a time based lock, so the lock time should be based off the
-		// MTP of the *next* block.
-		{
-			tx: &wire.MsgTx{
-				Version: 2,
-				TxIn: []*wire.TxIn{{
-					PreviousOutPoint: unConfUtxo,
-					Sequence:         LockTimeToSequence(true, 1024),
-				}},
-			},
-			view:    utxoView,
-			mempool: true,
-			want: &SequenceLock{
-				Seconds:     nextMedianTime + 1023,
-				BlockHeight: -1,
-			},
-		},
-	}
-
-	t.Logf("Running %v SequenceLock tests", len(tests))
-	for i, test := range tests {
-		utilTx := btcutil.NewTx(test.tx)
-		seqLock, err := chain.CalcSequenceLock(utilTx, test.view, test.mempool)
-		if err != nil {
-			t.Fatalf("test #%d, unable to calc sequence lock: %v", i, err)
-		}
-
-		if seqLock.Seconds != test.want.Seconds {
-			t.Fatalf("test #%d got %v seconds want %v seconds",
-				i, seqLock.Seconds, test.want.Seconds)
-		}
-		if seqLock.BlockHeight != test.want.BlockHeight {
-			t.Fatalf("test #%d got height of %v want height of %v ",
-				i, seqLock.BlockHeight, test.want.BlockHeight)
-		}
-	}
-}
-
-// nodeHashes is a convenience function that returns the hashes for all of the
-// passed indexes of the provided nodes.  It is used to construct expected hash
-// slices in the tests.
-func nodeHashes(nodes []*blockNode, indexes ...int) []chainhash.Hash {
-	hashes := make([]chainhash.Hash, 0, len(indexes))
-	for _, idx := range indexes {
-		hashes = append(hashes, nodes[idx].hash)
-	}
-	return hashes
-}
-
-// nodeHeaders is a convenience function that returns the headers for all of
-// the passed indexes of the provided nodes.  It is used to construct expected
-// located headers in the tests.
-func nodeHeaders(nodes []*blockNode, indexes ...int) []wire.BlockHeader {
-	headers := make([]wire.BlockHeader, 0, len(indexes))
-	for _, idx := range indexes {
-		headers = append(headers, nodes[idx].Header())
-	}
-	return headers
-}
-
-// TestLocateInventory ensures that locating inventory via the LocateHeaders and
-// LocateBlocks functions behaves as expected.
-func TestLocateInventory(t *testing.T) {
-	// Construct a synthetic block chain with a block index consisting of
-	// the following structure.
-	// 	genesis -> 1 -> 2 -> ... -> 15 -> 16  -> 17  -> 18
-	// 	                              \-> 16a -> 17a
-	tip := tstTip
-	chain := newFakeChain(&chaincfg.MainNetParams)
-	branch0Nodes := chainedNodes(chain.bestChain.Genesis(), 18)
-	branch1Nodes := chainedNodes(branch0Nodes[14], 2)
-	for _, node := range branch0Nodes {
-		chain.index.AddNode(node)
-	}
-	for _, node := range branch1Nodes {
-		chain.index.AddNode(node)
-	}
-	chain.bestChain.SetTip(tip(branch0Nodes))
-
-	// Create chain views for different branches of the overall chain to
-	// simulate a local and remote node on different parts of the chain.
-	localView := newChainView(tip(branch0Nodes))
-	remoteView := newChainView(tip(branch1Nodes))
-
-	// Create a chain view for a completely unrelated block chain to
-	// simulate a remote node on a totally different chain.
-	unrelatedBranchNodes := chainedNodes(nil, 5)
-	unrelatedView := newChainView(tip(unrelatedBranchNodes))
-
-	tests := []struct {
-		name       string
-		locator    BlockLocator       // locator for requested inventory
-		hashStop   chainhash.Hash     // stop hash for locator
-		maxAllowed uint32             // max to locate, 0 = wire const
-		headers    []wire.BlockHeader // expected located headers
-		hashes     []chainhash.Hash   // expected located hashes
-	}{
-		{
-			// Empty block locators and unknown stop hash.  No
-			// inventory should be located.
-			name:     "no locators, no stop",
-			locator:  nil,
-			hashStop: chainhash.Hash{},
-			headers:  nil,
-			hashes:   nil,
-		},
-		{
-			// Empty block locators and stop hash in side chain.
-			// The expected result is the requested block.
-			name:     "no locators, stop in side",
-			locator:  nil,
-			hashStop: tip(branch1Nodes).hash,
-			headers:  nodeHeaders(branch1Nodes, 1),
-			hashes:   nodeHashes(branch1Nodes, 1),
-		},
-		{
-			// Empty block locators and stop hash in main chain.
-			// The expected result is the requested block.
-			name:     "no locators, stop in main",
-			locator:  nil,
-			hashStop: branch0Nodes[12].hash,
-			headers:  nodeHeaders(branch0Nodes, 12),
-			hashes:   nodeHashes(branch0Nodes, 12),
-		},
-		{
-			// Locators based on remote being on side chain and a
-			// stop hash local node doesn't know about.  The
-			// expected result is the blocks after the fork point in
-			// the main chain and the stop hash has no effect.
-			name:     "remote side chain, unknown stop",
-			locator:  remoteView.BlockLocator(nil),
-			hashStop: chainhash.Hash{0x01},
-			headers:  nodeHeaders(branch0Nodes, 15, 16, 17),
-			hashes:   nodeHashes(branch0Nodes, 15, 16, 17),
-		},
-		{
-			// Locators based on remote being on side chain and a
-			// stop hash in side chain.  The expected result is the
-			// blocks after the fork point in the main chain and the
-			// stop hash has no effect.
-			name:     "remote side chain, stop in side",
-			locator:  remoteView.BlockLocator(nil),
-			hashStop: tip(branch1Nodes).hash,
-			headers:  nodeHeaders(branch0Nodes, 15, 16, 17),
-			hashes:   nodeHashes(branch0Nodes, 15, 16, 17),
-		},
-		{
-			// Locators based on remote being on side chain and a
-			// stop hash in main chain, but before fork point.  The
-			// expected result is the blocks after the fork point in
-			// the main chain and the stop hash has no effect.
-			name:     "remote side chain, stop in main before",
-			locator:  remoteView.BlockLocator(nil),
-			hashStop: branch0Nodes[13].hash,
-			headers:  nodeHeaders(branch0Nodes, 15, 16, 17),
-			hashes:   nodeHashes(branch0Nodes, 15, 16, 17),
-		},
-		{
-			// Locators based on remote being on side chain and a
-			// stop hash in main chain, but exactly at the fork
-			// point.  The expected result is the blocks after the
-			// fork point in the main chain and the stop hash has no
-			// effect.
-			name:     "remote side chain, stop in main exact",
-			locator:  remoteView.BlockLocator(nil),
-			hashStop: branch0Nodes[14].hash,
-			headers:  nodeHeaders(branch0Nodes, 15, 16, 17),
-			hashes:   nodeHashes(branch0Nodes, 15, 16, 17),
-		},
-		{
-			// Locators based on remote being on side chain and a
-			// stop hash in main chain just after the fork point.
-			// The expected result is the blocks after the fork
-			// point in the main chain up to and including the stop
-			// hash.
-			name:     "remote side chain, stop in main after",
-			locator:  remoteView.BlockLocator(nil),
-			hashStop: branch0Nodes[15].hash,
-			headers:  nodeHeaders(branch0Nodes, 15),
-			hashes:   nodeHashes(branch0Nodes, 15),
-		},
-		{
-			// Locators based on remote being on side chain and a
-			// stop hash in main chain some time after the fork
-			// point.  The expected result is the blocks after the
-			// fork point in the main chain up to and including the
-			// stop hash.
-			name:     "remote side chain, stop in main after more",
-			locator:  remoteView.BlockLocator(nil),
-			hashStop: branch0Nodes[16].hash,
-			headers:  nodeHeaders(branch0Nodes, 15, 16),
-			hashes:   nodeHashes(branch0Nodes, 15, 16),
-		},
-		{
-			// Locators based on remote being on main chain in the
-			// past and a stop hash local node doesn't know about.
-			// The expected result is the blocks after the known
-			// point in the main chain and the stop hash has no
-			// effect.
-			name:     "remote main chain past, unknown stop",
-			locator:  localView.BlockLocator(branch0Nodes[12]),
-			hashStop: chainhash.Hash{0x01},
-			headers:  nodeHeaders(branch0Nodes, 13, 14, 15, 16, 17),
-			hashes:   nodeHashes(branch0Nodes, 13, 14, 15, 16, 17),
-		},
-		{
-			// Locators based on remote being on main chain in the
-			// past and a stop hash in a side chain.  The expected
-			// result is the blocks after the known point in the
-			// main chain and the stop hash has no effect.
-			name:     "remote main chain past, stop in side",
-			locator:  localView.BlockLocator(branch0Nodes[12]),
-			hashStop: tip(branch1Nodes).hash,
-			headers:  nodeHeaders(branch0Nodes, 13, 14, 15, 16, 17),
-			hashes:   nodeHashes(branch0Nodes, 13, 14, 15, 16, 17),
-		},
-		{
-			// Locators based on remote being on main chain in the
-			// past and a stop hash in the main chain before that
-			// point.  The expected result is the blocks after the
-			// known point in the main chain and the stop hash has
-			// no effect.
-			name:     "remote main chain past, stop in main before",
-			locator:  localView.BlockLocator(branch0Nodes[12]),
-			hashStop: branch0Nodes[11].hash,
-			headers:  nodeHeaders(branch0Nodes, 13, 14, 15, 16, 17),
-			hashes:   nodeHashes(branch0Nodes, 13, 14, 15, 16, 17),
-		},
-		{
-			// Locators based on remote being on main chain in the
-			// past and a stop hash in the main chain exactly at that
-			// point.  The expected result is the blocks after the
-			// known point in the main chain and the stop hash has
-			// no effect.
-			name:     "remote main chain past, stop in main exact",
-			locator:  localView.BlockLocator(branch0Nodes[12]),
-			hashStop: branch0Nodes[12].hash,
-			headers:  nodeHeaders(branch0Nodes, 13, 14, 15, 16, 17),
-			hashes:   nodeHashes(branch0Nodes, 13, 14, 15, 16, 17),
-		},
-		{
-			// Locators based on remote being on main chain in the
-			// past and a stop hash in the main chain just after
-			// that point.  The expected result is the blocks after
-			// the known point in the main chain and the stop hash
-			// has no effect.
-			name:     "remote main chain past, stop in main after",
-			locator:  localView.BlockLocator(branch0Nodes[12]),
-			hashStop: branch0Nodes[13].hash,
-			headers:  nodeHeaders(branch0Nodes, 13),
-			hashes:   nodeHashes(branch0Nodes, 13),
-		},
-		{
-			// Locators based on remote being on main chain in the
-			// past and a stop hash in the main chain some time
-			// after that point.  The expected result is the blocks
-			// after the known point in the main chain and the stop
-			// hash has no effect.
-			name:     "remote main chain past, stop in main after more",
-			locator:  localView.BlockLocator(branch0Nodes[12]),
-			hashStop: branch0Nodes[15].hash,
-			headers:  nodeHeaders(branch0Nodes, 13, 14, 15),
-			hashes:   nodeHashes(branch0Nodes, 13, 14, 15),
-		},
-		{
-			// Locators based on remote being at exactly the same
-			// point in the main chain and a stop hash local node
-			// doesn't know about.  The expected result is no
-			// located inventory.
-			name:     "remote main chain same, unknown stop",
-			locator:  localView.BlockLocator(nil),
-			hashStop: chainhash.Hash{0x01},
-			headers:  nil,
-			hashes:   nil,
-		},
-		{
-			// Locators based on remote being at exactly the same
-			// point in the main chain and a stop hash at exactly
-			// the same point.  The expected result is no located
-			// inventory.
-			name:     "remote main chain same, stop same point",
-			locator:  localView.BlockLocator(nil),
-			hashStop: tip(branch0Nodes).hash,
-			headers:  nil,
-			hashes:   nil,
-		},
-		{
-			// Locators from remote that don't include any blocks
-			// the local node knows.  This would happen if the
-			// remote node is on a completely separate chain that
-			// isn't rooted with the same genesis block.  The
-			// expected result is the blocks after the genesis
-			// block.
-			name:     "remote unrelated chain",
-			locator:  unrelatedView.BlockLocator(nil),
-			hashStop: chainhash.Hash{},
-			headers: nodeHeaders(branch0Nodes, 0, 1, 2, 3, 4, 5, 6,
-				7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17),
-			hashes: nodeHashes(branch0Nodes, 0, 1, 2, 3, 4, 5, 6,
-				7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17),
-		},
-		{
-			// Locators from remote for second block in main chain
-			// and no stop hash, but with an overridden max limit.
-			// The expected result is the blocks after the second
-			// block limited by the max.
-			name:       "remote genesis",
-			locator:    locatorHashes(branch0Nodes, 0),
-			hashStop:   chainhash.Hash{},
-			maxAllowed: 3,
-			headers:    nodeHeaders(branch0Nodes, 1, 2, 3),
-			hashes:     nodeHashes(branch0Nodes, 1, 2, 3),
-		},
-		{
-			// Poorly formed locator.
-			//
-			// Locator from remote that only includes a single
-			// block on a side chain the local node knows.  The
-			// expected result is the blocks after the genesis
-			// block since even though the block is known, it is on
-			// a side chain and there are no more locators to find
-			// the fork point.
-			name:     "weak locator, single known side block",
-			locator:  locatorHashes(branch1Nodes, 1),
-			hashStop: chainhash.Hash{},
-			headers: nodeHeaders(branch0Nodes, 0, 1, 2, 3, 4, 5, 6,
-				7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17),
-			hashes: nodeHashes(branch0Nodes, 0, 1, 2, 3, 4, 5, 6,
-				7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17),
-		},
-		{
-			// Poorly formed locator.
-			//
-			// Locator from remote that only includes multiple
-			// blocks on a side chain the local node knows however
-			// none in the main chain.  The expected result is the
-			// blocks after the genesis block since even though the
-			// blocks are known, they are all on a side chain and
-			// there are no more locators to find the fork point.
-			name:     "weak locator, multiple known side blocks",
-			locator:  locatorHashes(branch1Nodes, 1),
-			hashStop: chainhash.Hash{},
-			headers: nodeHeaders(branch0Nodes, 0, 1, 2, 3, 4, 5, 6,
-				7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17),
-			hashes: nodeHashes(branch0Nodes, 0, 1, 2, 3, 4, 5, 6,
-				7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17),
-		},
-		{
-			// Poorly formed locator.
-			//
-			// Locator from remote that only includes multiple
-			// blocks on a side chain the local node knows however
-			// none in the main chain but includes a stop hash in
-			// the main chain.  The expected result is the blocks
-			// after the genesis block up to the stop hash since
-			// even though the blocks are known, they are all on a
-			// side chain and there are no more locators to find the
-			// fork point.
-			name:     "weak locator, multiple known side blocks, stop in main",
-			locator:  locatorHashes(branch1Nodes, 1),
-			hashStop: branch0Nodes[5].hash,
-			headers:  nodeHeaders(branch0Nodes, 0, 1, 2, 3, 4, 5),
-			hashes:   nodeHashes(branch0Nodes, 0, 1, 2, 3, 4, 5),
-		},
-	}
-	for _, test := range tests {
-		// Ensure the expected headers are located.
-		var headers []wire.BlockHeader
-		if test.maxAllowed != 0 {
-			// Need to use the unexported function to override the
-			// max allowed for headers.
-			chain.chainLock.RLock()
-			headers = chain.locateHeaders(test.locator,
-				&test.hashStop, test.maxAllowed)
-			chain.chainLock.RUnlock()
-		} else {
-			headers = chain.LocateHeaders(test.locator,
-				&test.hashStop)
-		}
-		if !reflect.DeepEqual(headers, test.headers) {
-			t.Errorf("%s: unxpected headers -- got %v, want %v",
-				test.name, headers, test.headers)
-			continue
-		}
-
-		// Ensure the expected block hashes are located.
-		maxAllowed := uint32(wire.MaxBlocksPerMsg)
-		if test.maxAllowed != 0 {
-			maxAllowed = test.maxAllowed
-		}
-		hashes := chain.LocateBlocks(test.locator, &test.hashStop,
-			maxAllowed)
-		if !reflect.DeepEqual(hashes, test.hashes) {
-			t.Errorf("%s: unxpected hashes -- got %v, want %v",
-				test.name, hashes, test.hashes)
-			continue
-		}
-	}
-}
-
-// TestHeightToHashRange ensures that fetching a range of block hashes by start
-// height and end hash works as expected.
-func TestHeightToHashRange(t *testing.T) {
-	// Construct a synthetic block chain with a block index consisting of
-	// the following structure.
-	// 	genesis -> 1 -> 2 -> ... -> 15 -> 16  -> 17  -> 18
-	// 	                              \-> 16a -> 17a -> 18a (unvalidated)
-	tip := tstTip
-	chain := newFakeChain(&chaincfg.MainNetParams)
-	branch0Nodes := chainedNodes(chain.bestChain.Genesis(), 18)
-	branch1Nodes := chainedNodes(branch0Nodes[14], 3)
-	for _, node := range branch0Nodes {
-		chain.index.SetStatusFlags(node, statusValid)
-		chain.index.AddNode(node)
-	}
-	for _, node := range branch1Nodes {
-		if node.height < 18 {
-			chain.index.SetStatusFlags(node, statusValid)
-		}
-		chain.index.AddNode(node)
-	}
-	chain.bestChain.SetTip(tip(branch0Nodes))
-
-	tests := []struct {
-		name        string
-		startHeight int32            // locator for requested inventory
-		endHash     chainhash.Hash   // stop hash for locator
-		maxResults  int              // max to locate, 0 = wire const
-		hashes      []chainhash.Hash // expected located hashes
-		expectError bool
-	}{
-		{
-			name:        "blocks below tip",
-			startHeight: 11,
-			endHash:     branch0Nodes[14].hash,
-			maxResults:  10,
-			hashes:      nodeHashes(branch0Nodes, 10, 11, 12, 13, 14),
-		},
-		{
-			name:        "blocks on main chain",
-			startHeight: 15,
-			endHash:     branch0Nodes[17].hash,
-			maxResults:  10,
-			hashes:      nodeHashes(branch0Nodes, 14, 15, 16, 17),
-		},
-		{
-			name:        "blocks on stale chain",
-			startHeight: 15,
-			endHash:     branch1Nodes[1].hash,
-			maxResults:  10,
-			hashes: append(nodeHashes(branch0Nodes, 14),
-				nodeHashes(branch1Nodes, 0, 1)...),
-		},
-		{
-			name:        "invalid start height",
-			startHeight: 19,
-			endHash:     branch0Nodes[17].hash,
-			maxResults:  10,
-			expectError: true,
-		},
-		{
-			name:        "too many results",
-			startHeight: 1,
-			endHash:     branch0Nodes[17].hash,
-			maxResults:  10,
-			expectError: true,
-		},
-		{
-			name:        "unvalidated block",
-			startHeight: 15,
-			endHash:     branch1Nodes[2].hash,
-			maxResults:  10,
-			expectError: true,
-		},
-	}
-	for _, test := range tests {
-		hashes, err := chain.HeightToHashRange(test.startHeight, &test.endHash,
-			test.maxResults)
-		if err != nil {
-			if !test.expectError {
-				t.Errorf("%s: unexpected error: %v", test.name, err)
-			}
-			continue
-		}
-
-		if !reflect.DeepEqual(hashes, test.hashes) {
-			t.Errorf("%s: unxpected hashes -- got %v, want %v",
-				test.name, hashes, test.hashes)
-		}
-	}
-}
-
-// TestIntervalBlockHashes ensures that fetching block hashes at specified
-// intervals by end hash works as expected.
-func TestIntervalBlockHashes(t *testing.T) {
-	// Construct a synthetic block chain with a block index consisting of
-	// the following structure.
-	// 	genesis -> 1 -> 2 -> ... -> 15 -> 16  -> 17  -> 18
-	// 	                              \-> 16a -> 17a -> 18a (unvalidated)
-	tip := tstTip
-	chain := newFakeChain(&chaincfg.MainNetParams)
-	branch0Nodes := chainedNodes(chain.bestChain.Genesis(), 18)
-	branch1Nodes := chainedNodes(branch0Nodes[14], 3)
-	for _, node := range branch0Nodes {
-		chain.index.SetStatusFlags(node, statusValid)
-		chain.index.AddNode(node)
-	}
-	for _, node := range branch1Nodes {
-		if node.height < 18 {
-			chain.index.SetStatusFlags(node, statusValid)
-		}
-		chain.index.AddNode(node)
-	}
-	chain.bestChain.SetTip(tip(branch0Nodes))
-
-	tests := []struct {
-		name        string
-		endHash     chainhash.Hash
-		interval    int
-		hashes      []chainhash.Hash
-		expectError bool
-	}{
-		{
-			name:     "blocks on main chain",
-			endHash:  branch0Nodes[17].hash,
-			interval: 8,
-			hashes:   nodeHashes(branch0Nodes, 7, 15),
-		},
-		{
-			name:     "blocks on stale chain",
-			endHash:  branch1Nodes[1].hash,
-			interval: 8,
-			hashes: append(nodeHashes(branch0Nodes, 7),
-				nodeHashes(branch1Nodes, 0)...),
-		},
-		{
-			name:     "no results",
-			endHash:  branch0Nodes[17].hash,
-			interval: 20,
-			hashes:   []chainhash.Hash{},
-		},
-		{
-			name:        "unvalidated block",
-			endHash:     branch1Nodes[2].hash,
-			interval:    8,
-			expectError: true,
-		},
-	}
-	for _, test := range tests {
-		hashes, err := chain.IntervalBlockHashes(&test.endHash, test.interval)
-		if err != nil {
-			if !test.expectError {
-				t.Errorf("%s: unexpected error: %v", test.name, err)
-			}
-			continue
-		}
-
-		if !reflect.DeepEqual(hashes, test.hashes) {
-			t.Errorf("%s: unxpected hashes -- got %v, want %v",
-				test.name, hashes, test.hashes)
-		}
-	}
-}

blockchain/claimtrie.go

@@ -0,0 +1,178 @@
+package blockchain
+
+import (
+	"bytes"
+	"fmt"
+
+	"github.com/pkg/errors"
+
+	"github.com/btcsuite/btcd/txscript"
+	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btcutil"
+
+	"github.com/btcsuite/btcd/claimtrie"
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/node"
+)
+
+func (b *BlockChain) ParseClaimScripts(block *btcutil.Block, bn *blockNode, view *UtxoViewpoint,
+	failOnHashMiss bool, shouldFlush bool) error {
+	ht := block.Height()
+
+	for _, tx := range block.Transactions() {
+		h := handler{ht, tx, view, map[string][]byte{}}
+		if err := h.handleTxIns(b.claimTrie); err != nil {
+			return err
+		}
+		if err := h.handleTxOuts(b.claimTrie); err != nil {
+			return err
+		}
+	}
+
+	err := b.claimTrie.AppendBlock()
+	if err != nil {
+		return errors.Wrapf(err, "in append block")
+	}
+
+	if shouldFlush {
+		b.claimTrie.FlushToDisk()
+	}
+
+	hash := b.claimTrie.MerkleHash()
+	if bn.claimTrie != *hash {
+		if failOnHashMiss {
+			return errors.Errorf("height: %d, ct.MerkleHash: %s != node.ClaimTrie: %s", ht, *hash, bn.claimTrie)
+		}
+		node.LogOnce(fmt.Sprintf("\n\nHeight: %d, ct.MerkleHash: %s != node.ClaimTrie: %s, Error: %s", ht, *hash, bn.claimTrie, err))
+	}
+	return nil
+}
+
+type handler struct {
+	ht    int32
+	tx    *btcutil.Tx
+	view  *UtxoViewpoint
+	spent map[string][]byte
+}
+
+func (h *handler) handleTxIns(ct *claimtrie.ClaimTrie) error {
+	if IsCoinBase(h.tx) {
+		return nil
+	}
+	for _, txIn := range h.tx.MsgTx().TxIn {
+		op := txIn.PreviousOutPoint
+		e := h.view.LookupEntry(op)
+		if e == nil {
+			return errors.Errorf("missing input in view for %s", op.String())
+		}
+		cs, closer, err := txscript.DecodeClaimScript(e.pkScript)
+		if err == txscript.ErrNotClaimScript {
+			closer()
+			continue
+		}
+		if err != nil {
+			closer()
+			return err
+		}
+
+		var id change.ClaimID
+		name := cs.Name() // name of the previous one (that we're now spending)
+
+		switch cs.Opcode() {
+		case txscript.OP_CLAIMNAME: // OP code from previous transaction
+			id = change.NewClaimID(op) // claimID of the previous item now being spent
+			h.spent[id.Key()] = node.NormalizeIfNecessary(name, ct.Height())
+			err = ct.SpendClaim(name, op, id)
+		case txscript.OP_UPDATECLAIM:
+			copy(id[:], cs.ClaimID())
+			h.spent[id.Key()] = node.NormalizeIfNecessary(name, ct.Height())
+			err = ct.SpendClaim(name, op, id)
+		case txscript.OP_SUPPORTCLAIM:
+			copy(id[:], cs.ClaimID())
+			err = ct.SpendSupport(name, op, id)
+		}
+		closer()
+		if err != nil {
+			return errors.Wrapf(err, "handleTxIns")
+		}
+	}
+	return nil
+}
+
+func (h *handler) handleTxOuts(ct *claimtrie.ClaimTrie) error {
+	for i, txOut := range h.tx.MsgTx().TxOut {
+		op := *wire.NewOutPoint(h.tx.Hash(), uint32(i))
+		cs, closer, err := txscript.DecodeClaimScript(txOut.PkScript)
+		if err == txscript.ErrNotClaimScript {
+			closer()
+			continue
+		}
+		if err != nil {
+			closer()
+			return err
+		}
+
+		var id change.ClaimID
+		name := cs.Name()
+		amt := txOut.Value
+
+		switch cs.Opcode() {
+		case txscript.OP_CLAIMNAME:
+			id = change.NewClaimID(op)
+			err = ct.AddClaim(name, op, id, amt)
+		case txscript.OP_SUPPORTCLAIM:
+			copy(id[:], cs.ClaimID())
+			err = ct.AddSupport(name, op, amt, id)
+		case txscript.OP_UPDATECLAIM:
+			// old code wouldn't run the update if name or claimID didn't match existing data
+			// that was a safety feature, but it should have rejected the transaction instead
+			// TODO: reject transactions with invalid update commands
+			copy(id[:], cs.ClaimID())
+			normName := node.NormalizeIfNecessary(name, ct.Height())
+			if !bytes.Equal(h.spent[id.Key()], normName) {
+				node.LogOnce(fmt.Sprintf("Invalid update operation: name or ID mismatch at %d for: %s, %s",
+					ct.Height(), normName, id.String()))
+				closer()
+				continue
+			}
+
+			delete(h.spent, id.Key())
+			err = ct.UpdateClaim(name, op, amt, id)
+		}
+		closer()
+		if err != nil {
+			return errors.Wrapf(err, "handleTxOuts")
+		}
+	}
+	return nil
+}
+
+func (b *BlockChain) GetNamesChangedInBlock(height int32) ([]string, error) {
+	b.chainLock.RLock()
+	defer b.chainLock.RUnlock()
+
+	return b.claimTrie.NamesChangedInBlock(height)
+}
+
+func (b *BlockChain) GetClaimsForName(height int32, name string) (string, *node.Node, error) {
+
+	normalizedName := node.NormalizeIfNecessary([]byte(name), height)
+
+	b.chainLock.RLock()
+	defer b.chainLock.RUnlock()
+
+	n, err := b.claimTrie.NodeAt(height, normalizedName)
+	if err != nil {
+		if n != nil {
+			n.Close()
+		}
+		return string(normalizedName), nil, err
+	}
+
+	if n == nil {
+		return string(normalizedName), nil, fmt.Errorf("name does not exist at height %d: %s", height, name)
+	}
+
+	n.SortClaimsByBid()
+	return string(normalizedName), n, nil
+}

blockchain/difficulty.go

@@ -159,7 +159,6 @@ func CalcWork(bits uint32) *big.Int {
 func (b *BlockChain) calcEasiestDifficulty(bits uint32, duration time.Duration) uint32 {
 	// Convert types used in the calculations below.
 	durationVal := int64(duration / time.Second)
-	adjustmentFactor := big.NewInt(b.chainParams.RetargetAdjustmentFactor)
 
 	// The test network rules allow minimum difficulty blocks after more
 	// than twice the desired amount of time needed to generate a block has
@@ -178,7 +177,8 @@ func (b *BlockChain) calcEasiestDifficulty(bits uint32, duration time.Duration)
 	// multiplied by the max adjustment factor.
 	newTarget := CompactToBig(bits)
 	for durationVal > 0 && newTarget.Cmp(b.chainParams.PowLimit) < 0 {
-		newTarget.Mul(newTarget, adjustmentFactor)
+		adj := new(big.Int).Div(newTarget, big.NewInt(2))
+		newTarget.Add(newTarget, adj)
 		durationVal -= b.maxRetargetTimespan
 	}
 
@@ -224,47 +224,44 @@ func (b *BlockChain) calcNextRequiredDifficulty(lastNode *blockNode, newBlockTim
 		return b.chainParams.PowLimitBits, nil
 	}
 
-	// Return the previous block's difficulty requirements if this block
-	// is not at a difficulty retarget interval.
-	if (lastNode.height+1)%b.blocksPerRetarget != 0 {
-		// For networks that support it, allow special reduction of the
-		// required difficulty once too much time has elapsed without
-		// mining a block.
-		if b.chainParams.ReduceMinDifficulty {
-			// Return minimum difficulty when more than the desired
-			// amount of time has elapsed without mining a block.
-			reductionTime := int64(b.chainParams.MinDiffReductionTime /
-				time.Second)
-			allowMinTime := lastNode.timestamp + reductionTime
-			if newBlockTime.Unix() > allowMinTime {
-				return b.chainParams.PowLimitBits, nil
-			}
-
-			// The block was mined within the desired timeframe, so
-			// return the difficulty for the last block which did
-			// not have the special minimum difficulty rule applied.
-			return b.findPrevTestNetDifficulty(lastNode), nil
+	// For networks that support it, allow special reduction of the
+	// required difficulty once too much time has elapsed without
+	// mining a block.
+	if b.chainParams.ReduceMinDifficulty {
+		// Return minimum difficulty when more than the desired
+		// amount of time has elapsed without mining a block.
+		reductionTime := int64(b.chainParams.MinDiffReductionTime /
+			time.Second)
+		allowMinTime := lastNode.timestamp + reductionTime
+		if newBlockTime.Unix() > allowMinTime {
+			return b.chainParams.PowLimitBits, nil
 		}
 
-		// For the main network (or any unrecognized networks), simply
-		// return the previous block's difficulty requirements.
-		return lastNode.bits, nil
+		// The block was mined within the desired timeframe, so
+		// return the difficulty for the last block which did
+		// not have the special minimum difficulty rule applied.
+		return b.findPrevTestNetDifficulty(lastNode), nil
 	}
 
 	// Get the block node at the previous retarget (targetTimespan days
 	// worth of blocks).
-	firstNode := lastNode.RelativeAncestor(b.blocksPerRetarget - 1)
+	firstNode := lastNode.RelativeAncestor(b.blocksPerRetarget)
+	if lastNode.height == 0 {
+		firstNode = lastNode
+	}
 	if firstNode == nil {
 		return 0, AssertError("unable to obtain previous retarget block")
 	}
 
+	targetTimeSpan := int64(b.chainParams.TargetTimespan / time.Second)
+
 	// Limit the amount of adjustment that can occur to the previous
 	// difficulty.
 	actualTimespan := lastNode.timestamp - firstNode.timestamp
-	adjustedTimespan := actualTimespan
-	if actualTimespan < b.minRetargetTimespan {
+	adjustedTimespan := targetTimeSpan + (actualTimespan-targetTimeSpan)/8
+	if adjustedTimespan < b.minRetargetTimespan {
 		adjustedTimespan = b.minRetargetTimespan
-	} else if actualTimespan > b.maxRetargetTimespan {
+	} else if adjustedTimespan > b.maxRetargetTimespan {
 		adjustedTimespan = b.maxRetargetTimespan
 	}
 
@@ -275,7 +272,6 @@ func (b *BlockChain) calcNextRequiredDifficulty(lastNode *blockNode, newBlockTim
 	// result.
 	oldTarget := CompactToBig(lastNode.bits)
 	newTarget := new(big.Int).Mul(oldTarget, big.NewInt(adjustedTimespan))
-	targetTimeSpan := int64(b.chainParams.TargetTimespan / time.Second)
 	newTarget.Div(newTarget, big.NewInt(targetTimeSpan))
 
 	// Limit new value to the proof of work limit.

blockchain/error.go

@@ -220,6 +220,10 @@ const (
 	// current chain tip. This is not a block validation rule, but is required
 	// for block proposals submitted via getblocktemplate RPC.
 	ErrPrevBlockNotBest
+
+	// ErrBadClaimTrie indicates the calculated ClaimTrie root does not match
+	// the expected value.
+	ErrBadClaimTrie
 )
 
 // Map of ErrorCode values back to their constant names for pretty printing.
@@ -267,6 +271,7 @@ var errorCodeStrings = map[ErrorCode]string{
 	ErrPreviousBlockUnknown:      "ErrPreviousBlockUnknown",
 	ErrInvalidAncestorBlock:      "ErrInvalidAncestorBlock",
 	ErrPrevBlockNotBest:          "ErrPrevBlockNotBest",
+	ErrBadClaimTrie:              "ErrBadClaimTrie",
 }
 
 // String returns the ErrorCode as a human-readable name.

blockchain/example_test.go

@@ -1,107 +0,0 @@
-// Copyright (c) 2014-2016 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain_test
-
-import (
-	"fmt"
-	"math/big"
-	"os"
-	"path/filepath"
-
-	"github.com/btcsuite/btcd/blockchain"
-	"github.com/btcsuite/btcd/chaincfg"
-	"github.com/btcsuite/btcd/database"
-	_ "github.com/btcsuite/btcd/database/ffldb"
-	"github.com/btcsuite/btcutil"
-)
-
-// This example demonstrates how to create a new chain instance and use
-// ProcessBlock to attempt to add a block to the chain.  As the package
-// overview documentation describes, this includes all of the Bitcoin consensus
-// rules.  This example intentionally attempts to insert a duplicate genesis
-// block to illustrate how an invalid block is handled.
-func ExampleBlockChain_ProcessBlock() {
-	// Create a new database to store the accepted blocks into.  Typically
-	// this would be opening an existing database and would not be deleting
-	// and creating a new database like this, but it is done here so this is
-	// a complete working example and does not leave temporary files laying
-	// around.
-	dbPath := filepath.Join(os.TempDir(), "exampleprocessblock")
-	_ = os.RemoveAll(dbPath)
-	db, err := database.Create("ffldb", dbPath, chaincfg.MainNetParams.Net)
-	if err != nil {
-		fmt.Printf("Failed to create database: %v\n", err)
-		return
-	}
-	defer os.RemoveAll(dbPath)
-	defer db.Close()
-
-	// Create a new BlockChain instance using the underlying database for
-	// the main bitcoin network.  This example does not demonstrate some
-	// of the other available configuration options such as specifying a
-	// notification callback and signature cache.  Also, the caller would
-	// ordinarily keep a reference to the median time source and add time
-	// values obtained from other peers on the network so the local time is
-	// adjusted to be in agreement with other peers.
-	chain, err := blockchain.New(&blockchain.Config{
-		DB:          db,
-		ChainParams: &chaincfg.MainNetParams,
-		TimeSource:  blockchain.NewMedianTime(),
-	})
-	if err != nil {
-		fmt.Printf("Failed to create chain instance: %v\n", err)
-		return
-	}
-
-	// Process a block.  For this example, we are going to intentionally
-	// cause an error by trying to process the genesis block which already
-	// exists.
-	genesisBlock := btcutil.NewBlock(chaincfg.MainNetParams.GenesisBlock)
-	isMainChain, isOrphan, err := chain.ProcessBlock(genesisBlock,
-		blockchain.BFNone)
-	if err != nil {
-		fmt.Printf("Failed to process block: %v\n", err)
-		return
-	}
-	fmt.Printf("Block accepted. Is it on the main chain?: %v", isMainChain)
-	fmt.Printf("Block accepted. Is it an orphan?: %v", isOrphan)
-
-	// Output:
-	// Failed to process block: already have block 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f
-}
-
-// This example demonstrates how to convert the compact "bits" in a block header
-// which represent the target difficulty to a big integer and display it using
-// the typical hex notation.
-func ExampleCompactToBig() {
-	// Convert the bits from block 300000 in the main block chain.
-	bits := uint32(419465580)
-	targetDifficulty := blockchain.CompactToBig(bits)
-
-	// Display it in hex.
-	fmt.Printf("%064x\n", targetDifficulty.Bytes())
-
-	// Output:
-	// 0000000000000000896c00000000000000000000000000000000000000000000
-}
-
-// This example demonstrates how to convert a target difficulty into the compact
-// "bits" in a block header which represent that target difficulty .
-func ExampleBigToCompact() {
-	// Convert the target difficulty from block 300000 in the main block
-	// chain to compact form.
-	t := "0000000000000000896c00000000000000000000000000000000000000000000"
-	targetDifficulty, success := new(big.Int).SetString(t, 16)
-	if !success {
-		fmt.Println("invalid target difficulty")
-		return
-	}
-	bits := blockchain.BigToCompact(targetDifficulty)
-
-	fmt.Println(bits)
-
-	// Output:
-	// 419465580
-}

blockchain/fullblocks_test.go

@@ -1,310 +0,0 @@
-// Copyright (c) 2016 The Decred developers
-// Copyright (c) 2016-2017 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain_test
-
-import (
-	"bytes"
-	"fmt"
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/btcsuite/btcd/blockchain"
-	"github.com/btcsuite/btcd/blockchain/fullblocktests"
-	"github.com/btcsuite/btcd/chaincfg"
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
-	"github.com/btcsuite/btcd/database"
-	_ "github.com/btcsuite/btcd/database/ffldb"
-	"github.com/btcsuite/btcd/txscript"
-	"github.com/btcsuite/btcd/wire"
-	"github.com/btcsuite/btcutil"
-)
-
-const (
-	// testDbType is the database backend type to use for the tests.
-	testDbType = "ffldb"
-
-	// testDbRoot is the root directory used to create all test databases.
-	testDbRoot = "testdbs"
-
-	// blockDataNet is the expected network in the test block data.
-	blockDataNet = wire.MainNet
-)
-
-// filesExists returns whether or not the named file or directory exists.
-func fileExists(name string) bool {
-	if _, err := os.Stat(name); err != nil {
-		if os.IsNotExist(err) {
-			return false
-		}
-	}
-	return true
-}
-
-// isSupportedDbType returns whether or not the passed database type is
-// currently supported.
-func isSupportedDbType(dbType string) bool {
-	supportedDrivers := database.SupportedDrivers()
-	for _, driver := range supportedDrivers {
-		if dbType == driver {
-			return true
-		}
-	}
-
-	return false
-}
-
-// chainSetup is used to create a new db and chain instance with the genesis
-// block already inserted.  In addition to the new chain instance, it returns
-// a teardown function the caller should invoke when done testing to clean up.
-func chainSetup(dbName string, params *chaincfg.Params) (*blockchain.BlockChain, func(), error) {
-	if !isSupportedDbType(testDbType) {
-		return nil, nil, fmt.Errorf("unsupported db type %v", testDbType)
-	}
-
-	// Handle memory database specially since it doesn't need the disk
-	// specific handling.
-	var db database.DB
-	var teardown func()
-	if testDbType == "memdb" {
-		ndb, err := database.Create(testDbType)
-		if err != nil {
-			return nil, nil, fmt.Errorf("error creating db: %v", err)
-		}
-		db = ndb
-
-		// Setup a teardown function for cleaning up.  This function is
-		// returned to the caller to be invoked when it is done testing.
-		teardown = func() {
-			db.Close()
-		}
-	} else {
-		// Create the root directory for test databases.
-		if !fileExists(testDbRoot) {
-			if err := os.MkdirAll(testDbRoot, 0700); err != nil {
-				err := fmt.Errorf("unable to create test db "+
-					"root: %v", err)
-				return nil, nil, err
-			}
-		}
-
-		// Create a new database to store the accepted blocks into.
-		dbPath := filepath.Join(testDbRoot, dbName)
-		_ = os.RemoveAll(dbPath)
-		ndb, err := database.Create(testDbType, dbPath, blockDataNet)
-		if err != nil {
-			return nil, nil, fmt.Errorf("error creating db: %v", err)
-		}
-		db = ndb
-
-		// Setup a teardown function for cleaning up.  This function is
-		// returned to the caller to be invoked when it is done testing.
-		teardown = func() {
-			db.Close()
-			os.RemoveAll(dbPath)
-			os.RemoveAll(testDbRoot)
-		}
-	}
-
-	// Copy the chain params to ensure any modifications the tests do to
-	// the chain parameters do not affect the global instance.
-	paramsCopy := *params
-
-	// Create the main chain instance.
-	chain, err := blockchain.New(&blockchain.Config{
-		DB:          db,
-		ChainParams: &paramsCopy,
-		Checkpoints: nil,
-		TimeSource:  blockchain.NewMedianTime(),
-		SigCache:    txscript.NewSigCache(1000),
-	})
-	if err != nil {
-		teardown()
-		err := fmt.Errorf("failed to create chain instance: %v", err)
-		return nil, nil, err
-	}
-	return chain, teardown, nil
-}
-
-// TestFullBlocks ensures all tests generated by the fullblocktests package
-// have the expected result when processed via ProcessBlock.
-func TestFullBlocks(t *testing.T) {
-	tests, err := fullblocktests.Generate(false)
-	if err != nil {
-		t.Fatalf("failed to generate tests: %v", err)
-	}
-
-	// Create a new database and chain instance to run tests against.
-	chain, teardownFunc, err := chainSetup("fullblocktest",
-		&chaincfg.RegressionNetParams)
-	if err != nil {
-		t.Errorf("Failed to setup chain instance: %v", err)
-		return
-	}
-	defer teardownFunc()
-
-	// testAcceptedBlock attempts to process the block in the provided test
-	// instance and ensures that it was accepted according to the flags
-	// specified in the test.
-	testAcceptedBlock := func(item fullblocktests.AcceptedBlock) {
-		blockHeight := item.Height
-		block := btcutil.NewBlock(item.Block)
-		block.SetHeight(blockHeight)
-		t.Logf("Testing block %s (hash %s, height %d)",
-			item.Name, block.Hash(), blockHeight)
-
-		isMainChain, isOrphan, err := chain.ProcessBlock(block,
-			blockchain.BFNone)
-		if err != nil {
-			t.Fatalf("block %q (hash %s, height %d) should "+
-				"have been accepted: %v", item.Name,
-				block.Hash(), blockHeight, err)
-		}
-
-		// Ensure the main chain and orphan flags match the values
-		// specified in the test.
-		if isMainChain != item.IsMainChain {
-			t.Fatalf("block %q (hash %s, height %d) unexpected main "+
-				"chain flag -- got %v, want %v", item.Name,
-				block.Hash(), blockHeight, isMainChain,
-				item.IsMainChain)
-		}
-		if isOrphan != item.IsOrphan {
-			t.Fatalf("block %q (hash %s, height %d) unexpected "+
-				"orphan flag -- got %v, want %v", item.Name,
-				block.Hash(), blockHeight, isOrphan,
-				item.IsOrphan)
-		}
-	}
-
-	// testRejectedBlock attempts to process the block in the provided test
-	// instance and ensures that it was rejected with the reject code
-	// specified in the test.
-	testRejectedBlock := func(item fullblocktests.RejectedBlock) {
-		blockHeight := item.Height
-		block := btcutil.NewBlock(item.Block)
-		block.SetHeight(blockHeight)
-		t.Logf("Testing block %s (hash %s, height %d)",
-			item.Name, block.Hash(), blockHeight)
-
-		_, _, err := chain.ProcessBlock(block, blockchain.BFNone)
-		if err == nil {
-			t.Fatalf("block %q (hash %s, height %d) should not "+
-				"have been accepted", item.Name, block.Hash(),
-				blockHeight)
-		}
-
-		// Ensure the error code is of the expected type and the reject
-		// code matches the value specified in the test instance.
-		rerr, ok := err.(blockchain.RuleError)
-		if !ok {
-			t.Fatalf("block %q (hash %s, height %d) returned "+
-				"unexpected error type -- got %T, want "+
-				"blockchain.RuleError", item.Name, block.Hash(),
-				blockHeight, err)
-		}
-		if rerr.ErrorCode != item.RejectCode {
-			t.Fatalf("block %q (hash %s, height %d) does not have "+
-				"expected reject code -- got %v, want %v",
-				item.Name, block.Hash(), blockHeight,
-				rerr.ErrorCode, item.RejectCode)
-		}
-	}
-
-	// testRejectedNonCanonicalBlock attempts to decode the block in the
-	// provided test instance and ensures that it failed to decode with a
-	// message error.
-	testRejectedNonCanonicalBlock := func(item fullblocktests.RejectedNonCanonicalBlock) {
-		headerLen := len(item.RawBlock)
-		if headerLen > 80 {
-			headerLen = 80
-		}
-		blockHash := chainhash.DoubleHashH(item.RawBlock[0:headerLen])
-		blockHeight := item.Height
-		t.Logf("Testing block %s (hash %s, height %d)", item.Name,
-			blockHash, blockHeight)
-
-		// Ensure there is an error due to deserializing the block.
-		var msgBlock wire.MsgBlock
-		err := msgBlock.BtcDecode(bytes.NewReader(item.RawBlock), 0, wire.BaseEncoding)
-		if _, ok := err.(*wire.MessageError); !ok {
-			t.Fatalf("block %q (hash %s, height %d) should have "+
-				"failed to decode", item.Name, blockHash,
-				blockHeight)
-		}
-	}
-
-	// testOrphanOrRejectedBlock attempts to process the block in the
-	// provided test instance and ensures that it was either accepted as an
-	// orphan or rejected with a rule violation.
-	testOrphanOrRejectedBlock := func(item fullblocktests.OrphanOrRejectedBlock) {
-		blockHeight := item.Height
-		block := btcutil.NewBlock(item.Block)
-		block.SetHeight(blockHeight)
-		t.Logf("Testing block %s (hash %s, height %d)",
-			item.Name, block.Hash(), blockHeight)
-
-		_, isOrphan, err := chain.ProcessBlock(block, blockchain.BFNone)
-		if err != nil {
-			// Ensure the error code is of the expected type.
-			if _, ok := err.(blockchain.RuleError); !ok {
-				t.Fatalf("block %q (hash %s, height %d) "+
-					"returned unexpected error type -- "+
-					"got %T, want blockchain.RuleError",
-					item.Name, block.Hash(), blockHeight,
-					err)
-			}
-		}
-
-		if !isOrphan {
-			t.Fatalf("block %q (hash %s, height %d) was accepted, "+
-				"but is not considered an orphan", item.Name,
-				block.Hash(), blockHeight)
-		}
-	}
-
-	// testExpectedTip ensures the current tip of the blockchain is the
-	// block specified in the provided test instance.
-	testExpectedTip := func(item fullblocktests.ExpectedTip) {
-		blockHeight := item.Height
-		block := btcutil.NewBlock(item.Block)
-		block.SetHeight(blockHeight)
-		t.Logf("Testing tip for block %s (hash %s, height %d)",
-			item.Name, block.Hash(), blockHeight)
-
-		// Ensure hash and height match.
-		best := chain.BestSnapshot()
-		if best.Hash != item.Block.BlockHash() ||
-			best.Height != blockHeight {
-
-			t.Fatalf("block %q (hash %s, height %d) should be "+
-				"the current tip -- got (hash %s, height %d)",
-				item.Name, block.Hash(), blockHeight, best.Hash,
-				best.Height)
-		}
-	}
-
-	for testNum, test := range tests {
-		for itemNum, item := range test {
-			switch item := item.(type) {
-			case fullblocktests.AcceptedBlock:
-				testAcceptedBlock(item)
-			case fullblocktests.RejectedBlock:
-				testRejectedBlock(item)
-			case fullblocktests.RejectedNonCanonicalBlock:
-				testRejectedNonCanonicalBlock(item)
-			case fullblocktests.OrphanOrRejectedBlock:
-				testOrphanOrRejectedBlock(item)
-			case fullblocktests.ExpectedTip:
-				testExpectedTip(item)
-			default:
-				t.Fatalf("test #%d, item #%d is not one of "+
-					"the supported test instance types -- "+
-					"got type: %T", testNum, itemNum, item)
-			}
-		}
-	}
-}

blockchain/fullblocktests/generate.go

@@ -31,11 +31,11 @@ const (
 	// Intentionally defined here rather than using constants from codebase
 	// to ensure consensus changes are detected.
 	maxBlockSigOps       = 20000
-	maxBlockSize         = 1000000
+	maxBlockSize         = 2000000
 	minCoinbaseScriptLen = 2
 	maxCoinbaseScriptLen = 100
 	medianTimeBlocks     = 11
-	maxScriptElementSize = 520
+	maxScriptElementSize = 20000
 
 	// numLargeReorgBlocks is the number of blocks to use in the large block
 	// reorg test (when enabled).  This is the equivalent of 1 week's worth
@@ -1875,7 +1875,7 @@ func Generate(includeLargeReorg bool) (tests [][]TestInstance, err error) {
 	//
 	//  Comment assumptions:
 	//    maxBlockSigOps = 20000
-	//    maxScriptElementSize = 520
+	//    maxScriptElementSize = 20000
 	//
 	//  [0-19999]    : OP_CHECKSIG
 	//  [20000]      : OP_PUSHDATA4

blockchain/merkle.go

@@ -230,8 +230,8 @@ func ValidateWitnessCommitment(blk *btcutil.Block) error {
 	coinbaseWitness := coinbaseTx.MsgTx().TxIn[0].Witness
 	if len(coinbaseWitness) != 1 {
 		str := fmt.Sprintf("the coinbase transaction has %d items in "+
-			"its witness stack when only one is allowed",
-			len(coinbaseWitness))
+			"its witness stack when only one is allowed. Height: %d",
+			len(coinbaseWitness), blk.Height())
 		return ruleError(ErrInvalidWitnessCommitment, str)
 	}
 	witnessNonce := coinbaseWitness[0]

blockchain/merkle_test.go

@@ -1,23 +0,0 @@
-// Copyright (c) 2013-2017 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain
-
-import (
-	"testing"
-
-	"github.com/btcsuite/btcutil"
-)
-
-// TestMerkle tests the BuildMerkleTreeStore API.
-func TestMerkle(t *testing.T) {
-	block := btcutil.NewBlock(&Block100000)
-	merkles := BuildMerkleTreeStore(block.Transactions(), false)
-	calculatedMerkleRoot := merkles[len(merkles)-1]
-	wantMerkle := &Block100000.Header.MerkleRoot
-	if !wantMerkle.IsEqual(calculatedMerkleRoot) {
-		t.Errorf("BuildMerkleTreeStore: merkle root mismatch - "+
-			"got %v, want %v", calculatedMerkleRoot, wantMerkle)
-	}
-}

blockchain/notifications_test.go

@@ -1,51 +0,0 @@
-// Copyright (c) 2017 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain
-
-import (
-	"testing"
-
-	"github.com/btcsuite/btcd/chaincfg"
-)
-
-// TestNotifications ensures that notification callbacks are fired on events.
-func TestNotifications(t *testing.T) {
-	blocks, err := loadBlocks("blk_0_to_4.dat.bz2")
-	if err != nil {
-		t.Fatalf("Error loading file: %v\n", err)
-	}
-
-	// Create a new database and chain instance to run tests against.
-	chain, teardownFunc, err := chainSetup("notifications",
-		&chaincfg.MainNetParams)
-	if err != nil {
-		t.Fatalf("Failed to setup chain instance: %v", err)
-	}
-	defer teardownFunc()
-
-	notificationCount := 0
-	callback := func(notification *Notification) {
-		if notification.Type == NTBlockAccepted {
-			notificationCount++
-		}
-	}
-
-	// Register callback multiple times then assert it is called that many
-	// times.
-	const numSubscribers = 3
-	for i := 0; i < numSubscribers; i++ {
-		chain.Subscribe(callback)
-	}
-
-	_, _, err = chain.ProcessBlock(blocks[1], BFNone)
-	if err != nil {
-		t.Fatalf("ProcessBlock fail on block 1: %v\n", err)
-	}
-
-	if notificationCount != numSubscribers {
-		t.Fatalf("Expected notification callback to be executed %d "+
-			"times, found %d", numSubscribers, notificationCount)
-	}
-}

blockchain/scriptval.go

@@ -86,6 +86,7 @@ out:
 					txIn.PreviousOutPoint, err, witness,
 					sigScript, pkScript)
 				err := ruleError(ErrScriptMalformed, str)
+				vm.Close()
 				v.sendResult(err)
 				break out
 			}
@@ -100,11 +101,13 @@ out:
 					txIn.PreviousOutPoint, err, witness,
 					sigScript, pkScript)
 				err := ruleError(ErrScriptValidation, str)
+				vm.Close()
 				v.sendResult(err)
 				break out
 			}
 
 			// Validation succeeded.
+			vm.Close()
 			v.sendResult(nil)
 
 		case <-v.quitChan:

blockchain/scriptval_test.go

@@ -1,46 +0,0 @@
-// Copyright (c) 2013-2017 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain
-
-import (
-	"fmt"
-	"testing"
-
-	"github.com/btcsuite/btcd/txscript"
-)
-
-// TestCheckBlockScripts ensures that validating the all of the scripts in a
-// known-good block doesn't return an error.
-func TestCheckBlockScripts(t *testing.T) {
-	testBlockNum := 277647
-	blockDataFile := fmt.Sprintf("%d.dat.bz2", testBlockNum)
-	blocks, err := loadBlocks(blockDataFile)
-	if err != nil {
-		t.Errorf("Error loading file: %v\n", err)
-		return
-	}
-	if len(blocks) > 1 {
-		t.Errorf("The test block file must only have one block in it")
-		return
-	}
-	if len(blocks) == 0 {
-		t.Errorf("The test block file may not be empty")
-		return
-	}
-
-	storeDataFile := fmt.Sprintf("%d.utxostore.bz2", testBlockNum)
-	view, err := loadUtxoView(storeDataFile)
-	if err != nil {
-		t.Errorf("Error loading txstore: %v\n", err)
-		return
-	}
-
-	scriptFlags := txscript.ScriptBip16
-	err = checkBlockScripts(blocks[0], view, scriptFlags, nil, nil)
-	if err != nil {
-		t.Errorf("Transaction script validation failed: %v\n", err)
-		return
-	}
-}

blockchain/thresholdstate.go

@@ -302,6 +302,12 @@ func (b *BlockChain) deploymentState(prevNode *blockNode, deploymentID uint32) (
 	}
 
 	deployment := &b.chainParams.Deployments[deploymentID]
+
+	// added to mimic LBRYcrd:
+	if deployment.ForceActiveAt > 0 && prevNode != nil && prevNode.height+1 >= deployment.ForceActiveAt {
+		return ThresholdActive, nil
+	}
+
 	checker := deploymentChecker{deployment: deployment, chain: b}
 	cache := &b.deploymentCaches[deploymentID]
 

blockchain/validate.go

@@ -40,7 +40,7 @@ const (
 
 	// baseSubsidy is the starting subsidy amount for mined blocks.  This
 	// value is halved every SubsidyHalvingInterval blocks.
-	baseSubsidy = 50 * btcutil.SatoshiPerBitcoin
+	baseSubsidy = 500 * btcutil.SatoshiPerBitcoin
 )
 
 var (
@@ -192,17 +192,44 @@ func isBIP0030Node(node *blockNode) bool {
 // At the target block generation rate for the main network, this is
 // approximately every 4 years.
 func CalcBlockSubsidy(height int32, chainParams *chaincfg.Params) int64 {
-	if chainParams.SubsidyReductionInterval == 0 {
-		return baseSubsidy
+	h := int64(height)
+	if h == 0 {
+		return btcutil.SatoshiPerBitcoin * 4e8
+	}
+	if h <= 5100 {
+		return btcutil.SatoshiPerBitcoin
+	}
+	if h <= 55000 {
+		return btcutil.SatoshiPerBitcoin * (1 + (h-5001)/100)
 	}
 
-	// Equivalent to: baseSubsidy / 2^(height/subsidyHalvingInterval)
-	return baseSubsidy >> uint(height/chainParams.SubsidyReductionInterval)
+	lv := (h - 55001) / int64(chainParams.SubsidyReductionInterval)
+	reduction := (int64(math.Sqrt((float64(8*lv))+1)) - 1) / 2
+	for !withinLevelBounds(reduction, lv) {
+		if ((reduction*reduction + reduction) >> 1) > lv {
+			reduction--
+		} else {
+			reduction++
+		}
+	}
+	subsidyReduction := btcutil.SatoshiPerBitcoin * reduction
+	if subsidyReduction >= baseSubsidy {
+		return 0
+	}
+	return baseSubsidy - subsidyReduction
+}
+
+func withinLevelBounds(reduction int64, lv int64) bool {
+	if ((reduction*reduction + reduction) >> 1) > lv {
+		return false
+	}
+	reduction++
+	return ((reduction*reduction + reduction) >> 1) > lv
 }
 
 // CheckTransactionSanity performs some preliminary checks on a transaction to
-// ensure it is sane.  These checks are context free.
-func CheckTransactionSanity(tx *btcutil.Tx) error {
+// ensure it is sane.
+func CheckTransactionSanity(tx *btcutil.Tx, enforceSoftFork bool) error {
 	// A transaction must have at least one input.
 	msgTx := tx.MsgTx()
 	if len(msgTx.TxIn) == 0 {
@@ -261,6 +288,11 @@ func CheckTransactionSanity(tx *btcutil.Tx) error {
 				btcutil.MaxSatoshi)
 			return ruleError(ErrBadTxOutValue, str)
 		}
+
+		err := txscript.AllClaimsAreSane(txOut.PkScript, enforceSoftFork)
+		if err != nil {
+			return ruleError(ErrBadTxOutValue, err.Error())
+		}
 	}
 
 	// Check for duplicate transaction inputs.
@@ -324,7 +356,7 @@ func checkProofOfWork(header *wire.BlockHeader, powLimit *big.Int, flags Behavio
 	// to avoid proof of work checks is set.
 	if flags&BFNoPoWCheck != BFNoPoWCheck {
 		// The block hash must be less than the claimed target.
-		hash := header.BlockHash()
+		hash := header.BlockPoWHash()
 		hashNum := HashToBig(&hash)
 		if hashNum.Cmp(target) > 0 {
 			str := fmt.Sprintf("block hash of %064x is higher than "+
@@ -515,7 +547,7 @@ func checkBlockSanity(block *btcutil.Block, powLimit *big.Int, timeSource Median
 	// Do some preliminary checks on each transaction to ensure they are
 	// sane before continuing.
 	for _, tx := range transactions {
-		err := CheckTransactionSanity(tx)
+		err := CheckTransactionSanity(tx, false)
 		if err != nil {
 			return err
 		}

blockchain/validate_test.go

@@ -1,487 +0,0 @@
-// Copyright (c) 2013-2017 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain
-
-import (
-	"math"
-	"reflect"
-	"testing"
-	"time"
-
-	"github.com/btcsuite/btcd/chaincfg"
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
-	"github.com/btcsuite/btcd/wire"
-	"github.com/btcsuite/btcutil"
-)
-
-// TestSequenceLocksActive tests the SequenceLockActive function to ensure it
-// works as expected in all possible combinations/scenarios.
-func TestSequenceLocksActive(t *testing.T) {
-	seqLock := func(h int32, s int64) *SequenceLock {
-		return &SequenceLock{
-			Seconds:     s,
-			BlockHeight: h,
-		}
-	}
-
-	tests := []struct {
-		seqLock     *SequenceLock
-		blockHeight int32
-		mtp         time.Time
-
-		want bool
-	}{
-		// Block based sequence lock with equal block height.
-		{seqLock: seqLock(1000, -1), blockHeight: 1001, mtp: time.Unix(9, 0), want: true},
-
-		// Time based sequence lock with mtp past the absolute time.
-		{seqLock: seqLock(-1, 30), blockHeight: 2, mtp: time.Unix(31, 0), want: true},
-
-		// Block based sequence lock with current height below seq lock block height.
-		{seqLock: seqLock(1000, -1), blockHeight: 90, mtp: time.Unix(9, 0), want: false},
-
-		// Time based sequence lock with current time before lock time.
-		{seqLock: seqLock(-1, 30), blockHeight: 2, mtp: time.Unix(29, 0), want: false},
-
-		// Block based sequence lock at the same height, so shouldn't yet be active.
-		{seqLock: seqLock(1000, -1), blockHeight: 1000, mtp: time.Unix(9, 0), want: false},
-
-		// Time based sequence lock with current time equal to lock time, so shouldn't yet be active.
-		{seqLock: seqLock(-1, 30), blockHeight: 2, mtp: time.Unix(30, 0), want: false},
-	}
-
-	t.Logf("Running %d sequence locks tests", len(tests))
-	for i, test := range tests {
-		got := SequenceLockActive(test.seqLock,
-			test.blockHeight, test.mtp)
-		if got != test.want {
-			t.Fatalf("SequenceLockActive #%d got %v want %v", i,
-				got, test.want)
-		}
-	}
-}
-
-// TestCheckConnectBlockTemplate tests the CheckConnectBlockTemplate function to
-// ensure it fails.
-func TestCheckConnectBlockTemplate(t *testing.T) {
-	// Create a new database and chain instance to run tests against.
-	chain, teardownFunc, err := chainSetup("checkconnectblocktemplate",
-		&chaincfg.MainNetParams)
-	if err != nil {
-		t.Errorf("Failed to setup chain instance: %v", err)
-		return
-	}
-	defer teardownFunc()
-
-	// Since we're not dealing with the real block chain, set the coinbase
-	// maturity to 1.
-	chain.TstSetCoinbaseMaturity(1)
-
-	// Load up blocks such that there is a side chain.
-	// (genesis block) -> 1 -> 2 -> 3 -> 4
-	//                          \-> 3a
-	testFiles := []string{
-		"blk_0_to_4.dat.bz2",
-		"blk_3A.dat.bz2",
-	}
-
-	var blocks []*btcutil.Block
-	for _, file := range testFiles {
-		blockTmp, err := loadBlocks(file)
-		if err != nil {
-			t.Fatalf("Error loading file: %v\n", err)
-		}
-		blocks = append(blocks, blockTmp...)
-	}
-
-	for i := 1; i <= 3; i++ {
-		isMainChain, _, err := chain.ProcessBlock(blocks[i], BFNone)
-		if err != nil {
-			t.Fatalf("CheckConnectBlockTemplate: Received unexpected error "+
-				"processing block %d: %v", i, err)
-		}
-		if !isMainChain {
-			t.Fatalf("CheckConnectBlockTemplate: Expected block %d to connect "+
-				"to main chain", i)
-		}
-	}
-
-	// Block 3 should fail to connect since it's already inserted.
-	err = chain.CheckConnectBlockTemplate(blocks[3])
-	if err == nil {
-		t.Fatal("CheckConnectBlockTemplate: Did not received expected error " +
-			"on block 3")
-	}
-
-	// Block 4 should connect successfully to tip of chain.
-	err = chain.CheckConnectBlockTemplate(blocks[4])
-	if err != nil {
-		t.Fatalf("CheckConnectBlockTemplate: Received unexpected error on "+
-			"block 4: %v", err)
-	}
-
-	// Block 3a should fail to connect since does not build on chain tip.
-	err = chain.CheckConnectBlockTemplate(blocks[5])
-	if err == nil {
-		t.Fatal("CheckConnectBlockTemplate: Did not received expected error " +
-			"on block 3a")
-	}
-
-	// Block 4 should connect even if proof of work is invalid.
-	invalidPowBlock := *blocks[4].MsgBlock()
-	invalidPowBlock.Header.Nonce++
-	err = chain.CheckConnectBlockTemplate(btcutil.NewBlock(&invalidPowBlock))
-	if err != nil {
-		t.Fatalf("CheckConnectBlockTemplate: Received unexpected error on "+
-			"block 4 with bad nonce: %v", err)
-	}
-
-	// Invalid block building on chain tip should fail to connect.
-	invalidBlock := *blocks[4].MsgBlock()
-	invalidBlock.Header.Bits--
-	err = chain.CheckConnectBlockTemplate(btcutil.NewBlock(&invalidBlock))
-	if err == nil {
-		t.Fatal("CheckConnectBlockTemplate: Did not received expected error " +
-			"on block 4 with invalid difficulty bits")
-	}
-}
-
-// TestCheckBlockSanity tests the CheckBlockSanity function to ensure it works
-// as expected.
-func TestCheckBlockSanity(t *testing.T) {
-	powLimit := chaincfg.MainNetParams.PowLimit
-	block := btcutil.NewBlock(&Block100000)
-	timeSource := NewMedianTime()
-	err := CheckBlockSanity(block, powLimit, timeSource)
-	if err != nil {
-		t.Errorf("CheckBlockSanity: %v", err)
-	}
-
-	// Ensure a block that has a timestamp with a precision higher than one
-	// second fails.
-	timestamp := block.MsgBlock().Header.Timestamp
-	block.MsgBlock().Header.Timestamp = timestamp.Add(time.Nanosecond)
-	err = CheckBlockSanity(block, powLimit, timeSource)
-	if err == nil {
-		t.Errorf("CheckBlockSanity: error is nil when it shouldn't be")
-	}
-}
-
-// TestCheckSerializedHeight tests the checkSerializedHeight function with
-// various serialized heights and also does negative tests to ensure errors
-// and handled properly.
-func TestCheckSerializedHeight(t *testing.T) {
-	// Create an empty coinbase template to be used in the tests below.
-	coinbaseOutpoint := wire.NewOutPoint(&chainhash.Hash{}, math.MaxUint32)
-	coinbaseTx := wire.NewMsgTx(1)
-	coinbaseTx.AddTxIn(wire.NewTxIn(coinbaseOutpoint, nil, nil))
-
-	// Expected rule errors.
-	missingHeightError := RuleError{
-		ErrorCode: ErrMissingCoinbaseHeight,
-	}
-	badHeightError := RuleError{
-		ErrorCode: ErrBadCoinbaseHeight,
-	}
-
-	tests := []struct {
-		sigScript  []byte // Serialized data
-		wantHeight int32  // Expected height
-		err        error  // Expected error type
-	}{
-		// No serialized height length.
-		{[]byte{}, 0, missingHeightError},
-		// Serialized height length with no height bytes.
-		{[]byte{0x02}, 0, missingHeightError},
-		// Serialized height length with too few height bytes.
-		{[]byte{0x02, 0x4a}, 0, missingHeightError},
-		// Serialized height that needs 2 bytes to encode.
-		{[]byte{0x02, 0x4a, 0x52}, 21066, nil},
-		// Serialized height that needs 2 bytes to encode, but backwards
-		// endianness.
-		{[]byte{0x02, 0x4a, 0x52}, 19026, badHeightError},
-		// Serialized height that needs 3 bytes to encode.
-		{[]byte{0x03, 0x40, 0x0d, 0x03}, 200000, nil},
-		// Serialized height that needs 3 bytes to encode, but backwards
-		// endianness.
-		{[]byte{0x03, 0x40, 0x0d, 0x03}, 1074594560, badHeightError},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		msgTx := coinbaseTx.Copy()
-		msgTx.TxIn[0].SignatureScript = test.sigScript
-		tx := btcutil.NewTx(msgTx)
-
-		err := checkSerializedHeight(tx, test.wantHeight)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("checkSerializedHeight #%d wrong error type "+
-				"got: %v <%T>, want: %T", i, err, err, test.err)
-			continue
-		}
-
-		if rerr, ok := err.(RuleError); ok {
-			trerr := test.err.(RuleError)
-			if rerr.ErrorCode != trerr.ErrorCode {
-				t.Errorf("checkSerializedHeight #%d wrong "+
-					"error code got: %v, want: %v", i,
-					rerr.ErrorCode, trerr.ErrorCode)
-				continue
-			}
-		}
-	}
-}
-
-// Block100000 defines block 100,000 of the block chain.  It is used to
-// test Block operations.
-var Block100000 = wire.MsgBlock{
-	Header: wire.BlockHeader{
-		Version: 1,
-		PrevBlock: chainhash.Hash([32]byte{ // Make go vet happy.
-			0x50, 0x12, 0x01, 0x19, 0x17, 0x2a, 0x61, 0x04,
-			0x21, 0xa6, 0xc3, 0x01, 0x1d, 0xd3, 0x30, 0xd9,
-			0xdf, 0x07, 0xb6, 0x36, 0x16, 0xc2, 0xcc, 0x1f,
-			0x1c, 0xd0, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
-		}), // 000000000002d01c1fccc21636b607dfd930d31d01c3a62104612a1719011250
-		MerkleRoot: chainhash.Hash([32]byte{ // Make go vet happy.
-			0x66, 0x57, 0xa9, 0x25, 0x2a, 0xac, 0xd5, 0xc0,
-			0xb2, 0x94, 0x09, 0x96, 0xec, 0xff, 0x95, 0x22,
-			0x28, 0xc3, 0x06, 0x7c, 0xc3, 0x8d, 0x48, 0x85,
-			0xef, 0xb5, 0xa4, 0xac, 0x42, 0x47, 0xe9, 0xf3,
-		}), // f3e94742aca4b5ef85488dc37c06c3282295ffec960994b2c0d5ac2a25a95766
-		Timestamp: time.Unix(1293623863, 0), // 2010-12-29 11:57:43 +0000 UTC
-		Bits:      0x1b04864c,               // 453281356
-		Nonce:     0x10572b0f,               // 274148111
-	},
-	Transactions: []*wire.MsgTx{
-		{
-			Version: 1,
-			TxIn: []*wire.TxIn{
-				{
-					PreviousOutPoint: wire.OutPoint{
-						Hash:  chainhash.Hash{},
-						Index: 0xffffffff,
-					},
-					SignatureScript: []byte{
-						0x04, 0x4c, 0x86, 0x04, 0x1b, 0x02, 0x06, 0x02,
-					},
-					Sequence: 0xffffffff,
-				},
-			},
-			TxOut: []*wire.TxOut{
-				{
-					Value: 0x12a05f200, // 5000000000
-					PkScript: []byte{
-						0x41, // OP_DATA_65
-						0x04, 0x1b, 0x0e, 0x8c, 0x25, 0x67, 0xc1, 0x25,
-						0x36, 0xaa, 0x13, 0x35, 0x7b, 0x79, 0xa0, 0x73,
-						0xdc, 0x44, 0x44, 0xac, 0xb8, 0x3c, 0x4e, 0xc7,
-						0xa0, 0xe2, 0xf9, 0x9d, 0xd7, 0x45, 0x75, 0x16,
-						0xc5, 0x81, 0x72, 0x42, 0xda, 0x79, 0x69, 0x24,
-						0xca, 0x4e, 0x99, 0x94, 0x7d, 0x08, 0x7f, 0xed,
-						0xf9, 0xce, 0x46, 0x7c, 0xb9, 0xf7, 0xc6, 0x28,
-						0x70, 0x78, 0xf8, 0x01, 0xdf, 0x27, 0x6f, 0xdf,
-						0x84, // 65-byte signature
-						0xac, // OP_CHECKSIG
-					},
-				},
-			},
-			LockTime: 0,
-		},
-		{
-			Version: 1,
-			TxIn: []*wire.TxIn{
-				{
-					PreviousOutPoint: wire.OutPoint{
-						Hash: chainhash.Hash([32]byte{ // Make go vet happy.
-							0x03, 0x2e, 0x38, 0xe9, 0xc0, 0xa8, 0x4c, 0x60,
-							0x46, 0xd6, 0x87, 0xd1, 0x05, 0x56, 0xdc, 0xac,
-							0xc4, 0x1d, 0x27, 0x5e, 0xc5, 0x5f, 0xc0, 0x07,
-							0x79, 0xac, 0x88, 0xfd, 0xf3, 0x57, 0xa1, 0x87,
-						}), // 87a157f3fd88ac7907c05fc55e271dc4acdc5605d187d646604ca8c0e9382e03
-						Index: 0,
-					},
-					SignatureScript: []byte{
-						0x49, // OP_DATA_73
-						0x30, 0x46, 0x02, 0x21, 0x00, 0xc3, 0x52, 0xd3,
-						0xdd, 0x99, 0x3a, 0x98, 0x1b, 0xeb, 0xa4, 0xa6,
-						0x3a, 0xd1, 0x5c, 0x20, 0x92, 0x75, 0xca, 0x94,
-						0x70, 0xab, 0xfc, 0xd5, 0x7d, 0xa9, 0x3b, 0x58,
-						0xe4, 0xeb, 0x5d, 0xce, 0x82, 0x02, 0x21, 0x00,
-						0x84, 0x07, 0x92, 0xbc, 0x1f, 0x45, 0x60, 0x62,
-						0x81, 0x9f, 0x15, 0xd3, 0x3e, 0xe7, 0x05, 0x5c,
-						0xf7, 0xb5, 0xee, 0x1a, 0xf1, 0xeb, 0xcc, 0x60,
-						0x28, 0xd9, 0xcd, 0xb1, 0xc3, 0xaf, 0x77, 0x48,
-						0x01, // 73-byte signature
-						0x41, // OP_DATA_65
-						0x04, 0xf4, 0x6d, 0xb5, 0xe9, 0xd6, 0x1a, 0x9d,
-						0xc2, 0x7b, 0x8d, 0x64, 0xad, 0x23, 0xe7, 0x38,
-						0x3a, 0x4e, 0x6c, 0xa1, 0x64, 0x59, 0x3c, 0x25,
-						0x27, 0xc0, 0x38, 0xc0, 0x85, 0x7e, 0xb6, 0x7e,
-						0xe8, 0xe8, 0x25, 0xdc, 0xa6, 0x50, 0x46, 0xb8,
-						0x2c, 0x93, 0x31, 0x58, 0x6c, 0x82, 0xe0, 0xfd,
-						0x1f, 0x63, 0x3f, 0x25, 0xf8, 0x7c, 0x16, 0x1b,
-						0xc6, 0xf8, 0xa6, 0x30, 0x12, 0x1d, 0xf2, 0xb3,
-						0xd3, // 65-byte pubkey
-					},
-					Sequence: 0xffffffff,
-				},
-			},
-			TxOut: []*wire.TxOut{
-				{
-					Value: 0x2123e300, // 556000000
-					PkScript: []byte{
-						0x76, // OP_DUP
-						0xa9, // OP_HASH160
-						0x14, // OP_DATA_20
-						0xc3, 0x98, 0xef, 0xa9, 0xc3, 0x92, 0xba, 0x60,
-						0x13, 0xc5, 0xe0, 0x4e, 0xe7, 0x29, 0x75, 0x5e,
-						0xf7, 0xf5, 0x8b, 0x32,
-						0x88, // OP_EQUALVERIFY
-						0xac, // OP_CHECKSIG
-					},
-				},
-				{
-					Value: 0x108e20f00, // 4444000000
-					PkScript: []byte{
-						0x76, // OP_DUP
-						0xa9, // OP_HASH160
-						0x14, // OP_DATA_20
-						0x94, 0x8c, 0x76, 0x5a, 0x69, 0x14, 0xd4, 0x3f,
-						0x2a, 0x7a, 0xc1, 0x77, 0xda, 0x2c, 0x2f, 0x6b,
-						0x52, 0xde, 0x3d, 0x7c,
-						0x88, // OP_EQUALVERIFY
-						0xac, // OP_CHECKSIG
-					},
-				},
-			},
-			LockTime: 0,
-		},
-		{
-			Version: 1,
-			TxIn: []*wire.TxIn{
-				{
-					PreviousOutPoint: wire.OutPoint{
-						Hash: chainhash.Hash([32]byte{ // Make go vet happy.
-							0xc3, 0x3e, 0xbf, 0xf2, 0xa7, 0x09, 0xf1, 0x3d,
-							0x9f, 0x9a, 0x75, 0x69, 0xab, 0x16, 0xa3, 0x27,
-							0x86, 0xaf, 0x7d, 0x7e, 0x2d, 0xe0, 0x92, 0x65,
-							0xe4, 0x1c, 0x61, 0xd0, 0x78, 0x29, 0x4e, 0xcf,
-						}), // cf4e2978d0611ce46592e02d7e7daf8627a316ab69759a9f3df109a7f2bf3ec3
-						Index: 1,
-					},
-					SignatureScript: []byte{
-						0x47, // OP_DATA_71
-						0x30, 0x44, 0x02, 0x20, 0x03, 0x2d, 0x30, 0xdf,
-						0x5e, 0xe6, 0xf5, 0x7f, 0xa4, 0x6c, 0xdd, 0xb5,
-						0xeb, 0x8d, 0x0d, 0x9f, 0xe8, 0xde, 0x6b, 0x34,
-						0x2d, 0x27, 0x94, 0x2a, 0xe9, 0x0a, 0x32, 0x31,
-						0xe0, 0xba, 0x33, 0x3e, 0x02, 0x20, 0x3d, 0xee,
-						0xe8, 0x06, 0x0f, 0xdc, 0x70, 0x23, 0x0a, 0x7f,
-						0x5b, 0x4a, 0xd7, 0xd7, 0xbc, 0x3e, 0x62, 0x8c,
-						0xbe, 0x21, 0x9a, 0x88, 0x6b, 0x84, 0x26, 0x9e,
-						0xae, 0xb8, 0x1e, 0x26, 0xb4, 0xfe, 0x01,
-						0x41, // OP_DATA_65
-						0x04, 0xae, 0x31, 0xc3, 0x1b, 0xf9, 0x12, 0x78,
-						0xd9, 0x9b, 0x83, 0x77, 0xa3, 0x5b, 0xbc, 0xe5,
-						0xb2, 0x7d, 0x9f, 0xff, 0x15, 0x45, 0x68, 0x39,
-						0xe9, 0x19, 0x45, 0x3f, 0xc7, 0xb3, 0xf7, 0x21,
-						0xf0, 0xba, 0x40, 0x3f, 0xf9, 0x6c, 0x9d, 0xee,
-						0xb6, 0x80, 0xe5, 0xfd, 0x34, 0x1c, 0x0f, 0xc3,
-						0xa7, 0xb9, 0x0d, 0xa4, 0x63, 0x1e, 0xe3, 0x95,
-						0x60, 0x63, 0x9d, 0xb4, 0x62, 0xe9, 0xcb, 0x85,
-						0x0f, // 65-byte pubkey
-					},
-					Sequence: 0xffffffff,
-				},
-			},
-			TxOut: []*wire.TxOut{
-				{
-					Value: 0xf4240, // 1000000
-					PkScript: []byte{
-						0x76, // OP_DUP
-						0xa9, // OP_HASH160
-						0x14, // OP_DATA_20
-						0xb0, 0xdc, 0xbf, 0x97, 0xea, 0xbf, 0x44, 0x04,
-						0xe3, 0x1d, 0x95, 0x24, 0x77, 0xce, 0x82, 0x2d,
-						0xad, 0xbe, 0x7e, 0x10,
-						0x88, // OP_EQUALVERIFY
-						0xac, // OP_CHECKSIG
-					},
-				},
-				{
-					Value: 0x11d260c0, // 299000000
-					PkScript: []byte{
-						0x76, // OP_DUP
-						0xa9, // OP_HASH160
-						0x14, // OP_DATA_20
-						0x6b, 0x12, 0x81, 0xee, 0xc2, 0x5a, 0xb4, 0xe1,
-						0xe0, 0x79, 0x3f, 0xf4, 0xe0, 0x8a, 0xb1, 0xab,
-						0xb3, 0x40, 0x9c, 0xd9,
-						0x88, // OP_EQUALVERIFY
-						0xac, // OP_CHECKSIG
-					},
-				},
-			},
-			LockTime: 0,
-		},
-		{
-			Version: 1,
-			TxIn: []*wire.TxIn{
-				{
-					PreviousOutPoint: wire.OutPoint{
-						Hash: chainhash.Hash([32]byte{ // Make go vet happy.
-							0x0b, 0x60, 0x72, 0xb3, 0x86, 0xd4, 0xa7, 0x73,
-							0x23, 0x52, 0x37, 0xf6, 0x4c, 0x11, 0x26, 0xac,
-							0x3b, 0x24, 0x0c, 0x84, 0xb9, 0x17, 0xa3, 0x90,
-							0x9b, 0xa1, 0xc4, 0x3d, 0xed, 0x5f, 0x51, 0xf4,
-						}), // f4515fed3dc4a19b90a317b9840c243bac26114cf637522373a7d486b372600b
-						Index: 0,
-					},
-					SignatureScript: []byte{
-						0x49, // OP_DATA_73
-						0x30, 0x46, 0x02, 0x21, 0x00, 0xbb, 0x1a, 0xd2,
-						0x6d, 0xf9, 0x30, 0xa5, 0x1c, 0xce, 0x11, 0x0c,
-						0xf4, 0x4f, 0x7a, 0x48, 0xc3, 0xc5, 0x61, 0xfd,
-						0x97, 0x75, 0x00, 0xb1, 0xae, 0x5d, 0x6b, 0x6f,
-						0xd1, 0x3d, 0x0b, 0x3f, 0x4a, 0x02, 0x21, 0x00,
-						0xc5, 0xb4, 0x29, 0x51, 0xac, 0xed, 0xff, 0x14,
-						0xab, 0xba, 0x27, 0x36, 0xfd, 0x57, 0x4b, 0xdb,
-						0x46, 0x5f, 0x3e, 0x6f, 0x8d, 0xa1, 0x2e, 0x2c,
-						0x53, 0x03, 0x95, 0x4a, 0xca, 0x7f, 0x78, 0xf3,
-						0x01, // 73-byte signature
-						0x41, // OP_DATA_65
-						0x04, 0xa7, 0x13, 0x5b, 0xfe, 0x82, 0x4c, 0x97,
-						0xec, 0xc0, 0x1e, 0xc7, 0xd7, 0xe3, 0x36, 0x18,
-						0x5c, 0x81, 0xe2, 0xaa, 0x2c, 0x41, 0xab, 0x17,
-						0x54, 0x07, 0xc0, 0x94, 0x84, 0xce, 0x96, 0x94,
-						0xb4, 0x49, 0x53, 0xfc, 0xb7, 0x51, 0x20, 0x65,
-						0x64, 0xa9, 0xc2, 0x4d, 0xd0, 0x94, 0xd4, 0x2f,
-						0xdb, 0xfd, 0xd5, 0xaa, 0xd3, 0xe0, 0x63, 0xce,
-						0x6a, 0xf4, 0xcf, 0xaa, 0xea, 0x4e, 0xa1, 0x4f,
-						0xbb, // 65-byte pubkey
-					},
-					Sequence: 0xffffffff,
-				},
-			},
-			TxOut: []*wire.TxOut{
-				{
-					Value: 0xf4240, // 1000000
-					PkScript: []byte{
-						0x76, // OP_DUP
-						0xa9, // OP_HASH160
-						0x14, // OP_DATA_20
-						0x39, 0xaa, 0x3d, 0x56, 0x9e, 0x06, 0xa1, 0xd7,
-						0x92, 0x6d, 0xc4, 0xbe, 0x11, 0x93, 0xc9, 0x9b,
-						0xf2, 0xeb, 0x9e, 0xe0,
-						0x88, // OP_EQUALVERIFY
-						0xac, // OP_CHECKSIG
-					},
-				},
-			},
-			LockTime: 0,
-		},
-	},
-}

blockchain/versionbits.go

@@ -195,6 +195,12 @@ func (b *BlockChain) calcNextBlockVersion(prevNode *blockNode) (int32, error) {
 	expectedVersion := uint32(vbTopBits)
 	for id := 0; id < len(b.chainParams.Deployments); id++ {
 		deployment := &b.chainParams.Deployments[id]
+
+		// added to mimic LBRYcrd:
+		if deployment.ForceActiveAt > 0 && prevNode != nil && prevNode.height+1 >= deployment.ForceActiveAt {
+			continue
+		}
+
 		cache := &b.deploymentCaches[id]
 		checker := deploymentChecker{deployment: deployment, chain: b}
 		state, err := b.thresholdState(prevNode, checker, cache)

blockchain/weight.go

@@ -20,11 +20,11 @@ const (
 	// weight of a "base" byte is 4, while the weight of a witness byte is
 	// 1. As a result, for a block to be valid, the BlockWeight MUST be
 	// less than, or equal to MaxBlockWeight.
-	MaxBlockWeight = 4000000
+	MaxBlockWeight = 8000000
 
 	// MaxBlockBaseSize is the maximum number of bytes within a block
 	// which can be allocated to non-witness data.
-	MaxBlockBaseSize = 1000000
+	MaxBlockBaseSize = 8000000
 
 	// MaxBlockSigOpsCost is the maximum number of signature operations
 	// allowed for a block. It is calculated via a weighted algorithm which

btcd.go

@@ -16,8 +16,11 @@ import (
 	"runtime/pprof"
 
 	"github.com/btcsuite/btcd/blockchain/indexers"
+	"github.com/btcsuite/btcd/claimtrie/param"
 	"github.com/btcsuite/btcd/database"
 	"github.com/btcsuite/btcd/limits"
+
+	"github.com/felixge/fgprof"
 )
 
 const (
@@ -65,6 +68,7 @@ func btcdMain(serverChan chan<- *server) error {
 
 	// Enable http profiling server if requested.
 	if cfg.Profile != "" {
+		http.DefaultServeMux.Handle("/debug/fgprof", fgprof.Handler())
 		go func() {
 			listenAddr := net.JoinHostPort("", cfg.Profile)
 			btcdLog.Infof("Profile server listening on %s", listenAddr)
@@ -144,6 +148,10 @@ func btcdMain(serverChan chan<- *server) error {
 		return nil
 	}
 
+	param.SetNetwork(activeNetParams.Params.Net) // prep the claimtrie params
+
+	go logMemoryUsage()
+
 	// Create server and start it.
 	server, err := newServer(cfg.Listeners, cfg.AgentBlacklist,
 		cfg.AgentWhitelist, db, activeNetParams.Params, interrupt)
@@ -158,6 +166,10 @@ func btcdMain(serverChan chan<- *server) error {
 		server.Stop()
 		server.WaitForShutdown()
 		srvrLog.Infof("Server shutdown complete")
+		// TODO: tie into the sync manager for shutdown instead
+		if ct := server.chain.ClaimTrie(); ct != nil {
+			ct.Close()
+		}
 	}()
 	server.Start()
 	if serverChan != nil {

btcjson/chainsvrcmds_test.go

@@ -388,7 +388,7 @@ func TestChainSvrCmds(t *testing.T) {
 				return btcjson.NewGetBlockFilterCmd("0000afaf", nil)
 			},
 			marshalled:   `{"jsonrpc":"1.0","method":"getblockfilter","params":["0000afaf"],"id":1}`,
-			unmarshalled: &btcjson.GetBlockFilterCmd{"0000afaf", nil},
+			unmarshalled: &btcjson.GetBlockFilterCmd{BlockHash: "0000afaf", FilterType: nil},
 		},
 		{
 			name: "getblockfilter optional filtertype",
@@ -399,7 +399,7 @@ func TestChainSvrCmds(t *testing.T) {
 				return btcjson.NewGetBlockFilterCmd("0000afaf", btcjson.NewFilterTypeName(btcjson.FilterTypeBasic))
 			},
 			marshalled:   `{"jsonrpc":"1.0","method":"getblockfilter","params":["0000afaf","basic"],"id":1}`,
-			unmarshalled: &btcjson.GetBlockFilterCmd{"0000afaf", btcjson.NewFilterTypeName(btcjson.FilterTypeBasic)},
+			unmarshalled: &btcjson.GetBlockFilterCmd{BlockHash: "0000afaf", FilterType: btcjson.NewFilterTypeName(btcjson.FilterTypeBasic)},
 		},
 		{
 			name: "getblockhash",

btcjson/chainsvrresults.go

@@ -25,6 +25,7 @@ type GetBlockHeaderVerboseResult struct {
 	Version       int32   `json:"version"`
 	VersionHex    string  `json:"versionHex"`
 	MerkleRoot    string  `json:"merkleroot"`
+	ClaimTrie     string  `json:"claimtrie"`
 	Time          int64   `json:"time"`
 	Nonce         uint64  `json:"nonce"`
 	Bits          string  `json:"bits"`
@@ -81,6 +82,7 @@ type GetBlockVerboseResult struct {
 	Version       int32         `json:"version"`
 	VersionHex    string        `json:"versionHex"`
 	MerkleRoot    string        `json:"merkleroot"`
+	ClaimTrie     string        `json:"claimTrie"`
 	Tx            []string      `json:"tx,omitempty"`
 	RawTx         []TxRawResult `json:"rawtx,omitempty"` // Note: this field is always empty when verbose != 2.
 	Time          int64         `json:"time"`
@@ -428,6 +430,9 @@ type ScriptPubKeyResult struct {
 	Hex       string   `json:"hex,omitempty"`
 	ReqSigs   int32    `json:"reqSigs,omitempty"`
 	Type      string   `json:"type"`
+	SubType   string   `json:"subtype"`
+	IsClaim   bool     `json:"isclaim"`
+	IsSupport bool     `json:"issupport"`
 	Addresses []string `json:"addresses,omitempty"`
 }
 
@@ -586,6 +591,8 @@ func (v *Vin) MarshalJSON() ([]byte, error) {
 type PrevOut struct {
 	Addresses []string `json:"addresses,omitempty"`
 	Value     float64  `json:"value"`
+	IsClaim   bool     `json:"isclaim"`
+	IsSupport bool     `json:"issupport"`
 }
 
 // VinPrevOut is like Vin except it includes PrevOut.  It is used by searchrawtransaction

btcjson/chainsvrresults_test.go

@@ -70,7 +70,7 @@ func TestChainSvrCustomResults(t *testing.T) {
 				},
 				Sequence: 4294967295,
 			},
-			expected: `{"txid":"123","vout":1,"scriptSig":{"asm":"0","hex":"00"},"prevOut":{"addresses":["addr1"],"value":0},"sequence":4294967295}`,
+			expected: `{"txid":"123","vout":1,"scriptSig":{"asm":"0","hex":"00"},"prevOut":{"addresses":["addr1"],"value":0,"isclaim":false,"issupport":false},"sequence":4294967295}`,
 		},
 	}
 

btcjson/claimcmds.go

@@ -0,0 +1,95 @@
+package btcjson
+
+func init() {
+	// No special flags for commands in this file.
+	flags := UsageFlag(0)
+
+	MustRegisterCmd("getchangesinblock", (*GetChangesInBlockCmd)(nil), flags)
+	MustRegisterCmd("getclaimsforname", (*GetClaimsForNameCmd)(nil), flags)
+	MustRegisterCmd("getclaimsfornamebyid", (*GetClaimsForNameByIDCmd)(nil), flags)
+	MustRegisterCmd("getclaimsfornamebybid", (*GetClaimsForNameByBidCmd)(nil), flags)
+	MustRegisterCmd("getclaimsfornamebyseq", (*GetClaimsForNameBySeqCmd)(nil), flags)
+	MustRegisterCmd("normalize", (*GetNormalizedCmd)(nil), flags)
+}
+
+// optional inputs are required to be pointers, but they support things like `jsonrpcdefault:"false"`
+// optional inputs have to be at the bottom of the struct
+// optional outputs require ",omitempty"
+// traditional bitcoin fields are all lowercase
+
+type GetChangesInBlockCmd struct {
+	HashOrHeight *string `json:"hashorheight" jsonrpcdefault:""`
+}
+
+type GetChangesInBlockResult struct {
+	Hash   string   `json:"hash"`
+	Height int32    `json:"height"`
+	Names  []string `json:"names"`
+}
+
+type GetClaimsForNameCmd struct {
+	Name          string  `json:"name"`
+	HashOrHeight  *string `json:"hashorheight" jsonrpcdefault:""`
+	IncludeValues *bool   `json:"includevalues" jsonrpcdefault:"false"`
+}
+
+type GetClaimsForNameByIDCmd struct {
+	Name            string   `json:"name"`
+	PartialClaimIDs []string `json:"partialclaimids"`
+	HashOrHeight    *string  `json:"hashorheight" jsonrpcdefault:""`
+	IncludeValues   *bool    `json:"includevalues" jsonrpcdefault:"false"`
+}
+
+type GetClaimsForNameByBidCmd struct {
+	Name          string  `json:"name"`
+	Bids          []int32 `json:"bids"`
+	HashOrHeight  *string `json:"hashorheight" jsonrpcdefault:""`
+	IncludeValues *bool   `json:"includevalues" jsonrpcdefault:"false"`
+}
+
+type GetClaimsForNameBySeqCmd struct {
+	Name          string  `json:"name"`
+	Sequences     []int32 `json:"sequences" jsonrpcusage:"[sequence,...]"`
+	HashOrHeight  *string `json:"hashorheight" jsonrpcdefault:""`
+	IncludeValues *bool   `json:"includevalues" jsonrpcdefault:"false"`
+}
+
+type GetClaimsForNameResult struct {
+	Hash           string        `json:"hash"`
+	Height         int32         `json:"height"`
+	NormalizedName string        `json:"normalizedname"`
+	Claims         []ClaimResult `json:"claims"`
+	// UnclaimedSupports []SupportResult `json:"unclaimedSupports"` how would this work with other constraints?
+}
+
+type SupportResult struct {
+	TXID          string `json:"txid"`
+	N             uint32 `json:"n"`
+	Height        int32  `json:"height"`
+	ValidAtHeight int32  `json:"validatheight"`
+	Amount        int64  `json:"amount"`
+	Address       string `json:"address,omitempty"`
+	Value         string `json:"value,omitempty"`
+}
+
+type ClaimResult struct {
+	ClaimID         string          `json:"claimid"`
+	TXID            string          `json:"txid"`
+	N               uint32          `json:"n"`
+	Bid             int32           `json:"bid"`
+	Sequence        int32           `json:"sequence"`
+	Height          int32           `json:"height"`
+	ValidAtHeight   int32           `json:"validatheight"`
+	EffectiveAmount int64           `json:"effectiveamount"`
+	Supports        []SupportResult `json:"supports,omitempty"`
+	Address         string          `json:"address,omitempty"`
+	Value           string          `json:"value,omitempty"`
+}
+
+type GetNormalizedCmd struct {
+	Name string `json:"name"`
+}
+
+type GetNormalizedResult struct {
+	NormalizedName string `json:"normalizedname"`
+}

btcjson/cmdinfo_test.go

@@ -1,430 +0,0 @@
-// Copyright (c) 2015 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package btcjson_test
-
-import (
-	"reflect"
-	"testing"
-
-	"github.com/btcsuite/btcd/btcjson"
-)
-
-// TestCmdMethod tests the CmdMethod function to ensure it retunrs the expected
-// methods and errors.
-func TestCmdMethod(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name   string
-		cmd    interface{}
-		method string
-		err    error
-	}{
-		{
-			name: "unregistered type",
-			cmd:  (*int)(nil),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrUnregisteredMethod},
-		},
-		{
-			name:   "nil pointer of registered type",
-			cmd:    (*btcjson.GetBlockCmd)(nil),
-			method: "getblock",
-		},
-		{
-			name:   "nil instance of registered type",
-			cmd:    &btcjson.GetBlockCountCmd{},
-			method: "getblockcount",
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		method, err := btcjson.CmdMethod(test.cmd)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%[3]v), "+
-				"want %T", i, test.name, err, test.err)
-			continue
-		}
-		if err != nil {
-			gotErrorCode := err.(btcjson.Error).ErrorCode
-			if gotErrorCode != test.err.(btcjson.Error).ErrorCode {
-				t.Errorf("Test #%d (%s) mismatched error code "+
-					"- got %v (%v), want %v", i, test.name,
-					gotErrorCode, err,
-					test.err.(btcjson.Error).ErrorCode)
-				continue
-			}
-
-			continue
-		}
-
-		// Ensure method matches the expected value.
-		if method != test.method {
-			t.Errorf("Test #%d (%s) mismatched method - got %v, "+
-				"want %v", i, test.name, method, test.method)
-			continue
-		}
-	}
-}
-
-// TestMethodUsageFlags tests the MethodUsage function ensure it returns the
-// expected flags and errors.
-func TestMethodUsageFlags(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name   string
-		method string
-		err    error
-		flags  btcjson.UsageFlag
-	}{
-		{
-			name:   "unregistered type",
-			method: "bogusmethod",
-			err:    btcjson.Error{ErrorCode: btcjson.ErrUnregisteredMethod},
-		},
-		{
-			name:   "getblock",
-			method: "getblock",
-			flags:  0,
-		},
-		{
-			name:   "walletpassphrase",
-			method: "walletpassphrase",
-			flags:  btcjson.UFWalletOnly,
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		flags, err := btcjson.MethodUsageFlags(test.method)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%[3]v), "+
-				"want %T", i, test.name, err, test.err)
-			continue
-		}
-		if err != nil {
-			gotErrorCode := err.(btcjson.Error).ErrorCode
-			if gotErrorCode != test.err.(btcjson.Error).ErrorCode {
-				t.Errorf("Test #%d (%s) mismatched error code "+
-					"- got %v (%v), want %v", i, test.name,
-					gotErrorCode, err,
-					test.err.(btcjson.Error).ErrorCode)
-				continue
-			}
-
-			continue
-		}
-
-		// Ensure flags match the expected value.
-		if flags != test.flags {
-			t.Errorf("Test #%d (%s) mismatched flags - got %v, "+
-				"want %v", i, test.name, flags, test.flags)
-			continue
-		}
-	}
-}
-
-// TestMethodUsageText tests the MethodUsageText function ensure it returns the
-// expected text.
-func TestMethodUsageText(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name     string
-		method   string
-		err      error
-		expected string
-	}{
-		{
-			name:   "unregistered type",
-			method: "bogusmethod",
-			err:    btcjson.Error{ErrorCode: btcjson.ErrUnregisteredMethod},
-		},
-		{
-			name:     "getblockcount",
-			method:   "getblockcount",
-			expected: "getblockcount",
-		},
-		{
-			name:     "getblock",
-			method:   "getblock",
-			expected: `getblock "hash" (verbosity=1)`,
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		usage, err := btcjson.MethodUsageText(test.method)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%[3]v), "+
-				"want %T", i, test.name, err, test.err)
-			continue
-		}
-		if err != nil {
-			gotErrorCode := err.(btcjson.Error).ErrorCode
-			if gotErrorCode != test.err.(btcjson.Error).ErrorCode {
-				t.Errorf("Test #%d (%s) mismatched error code "+
-					"- got %v (%v), want %v", i, test.name,
-					gotErrorCode, err,
-					test.err.(btcjson.Error).ErrorCode)
-				continue
-			}
-
-			continue
-		}
-
-		// Ensure usage matches the expected value.
-		if usage != test.expected {
-			t.Errorf("Test #%d (%s) mismatched usage - got %v, "+
-				"want %v", i, test.name, usage, test.expected)
-			continue
-		}
-
-		// Get the usage again to exercise caching.
-		usage, err = btcjson.MethodUsageText(test.method)
-		if err != nil {
-			t.Errorf("Test #%d (%s) unexpected error: %v", i,
-				test.name, err)
-			continue
-		}
-
-		// Ensure usage still matches the expected value.
-		if usage != test.expected {
-			t.Errorf("Test #%d (%s) mismatched usage - got %v, "+
-				"want %v", i, test.name, usage, test.expected)
-			continue
-		}
-	}
-}
-
-// TestFieldUsage tests the internal fieldUsage function ensure it returns the
-// expected text.
-func TestFieldUsage(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name     string
-		field    reflect.StructField
-		defValue *reflect.Value
-		expected string
-	}{
-		{
-			name: "jsonrpcusage tag override",
-			field: func() reflect.StructField {
-				type s struct {
-					Test int `jsonrpcusage:"testvalue"`
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: "testvalue",
-		},
-		{
-			name: "generic interface",
-			field: func() reflect.StructField {
-				type s struct {
-					Test interface{}
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `test`,
-		},
-		{
-			name: "string without default value",
-			field: func() reflect.StructField {
-				type s struct {
-					Test string
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `"test"`,
-		},
-		{
-			name: "string with default value",
-			field: func() reflect.StructField {
-				type s struct {
-					Test string
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: func() *reflect.Value {
-				value := "default"
-				rv := reflect.ValueOf(&value)
-				return &rv
-			}(),
-			expected: `test="default"`,
-		},
-		{
-			name: "array of strings",
-			field: func() reflect.StructField {
-				type s struct {
-					Test []string
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `["test",...]`,
-		},
-		{
-			name: "array of strings with plural field name 1",
-			field: func() reflect.StructField {
-				type s struct {
-					Keys []string
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `["key",...]`,
-		},
-		{
-			name: "array of strings with plural field name 2",
-			field: func() reflect.StructField {
-				type s struct {
-					Addresses []string
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `["address",...]`,
-		},
-		{
-			name: "array of strings with plural field name 3",
-			field: func() reflect.StructField {
-				type s struct {
-					Capabilities []string
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `["capability",...]`,
-		},
-		{
-			name: "array of structs",
-			field: func() reflect.StructField {
-				type s2 struct {
-					Txid string
-				}
-				type s struct {
-					Capabilities []s2
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `[{"txid":"value"},...]`,
-		},
-		{
-			name: "array of ints",
-			field: func() reflect.StructField {
-				type s struct {
-					Test []int
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `[test,...]`,
-		},
-		{
-			name: "sub struct with jsonrpcusage tag override",
-			field: func() reflect.StructField {
-				type s2 struct {
-					Test string `jsonrpcusage:"testusage"`
-				}
-				type s struct {
-					Test s2
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `{testusage}`,
-		},
-		{
-			name: "sub struct with string",
-			field: func() reflect.StructField {
-				type s2 struct {
-					Txid string
-				}
-				type s struct {
-					Test s2
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `{"txid":"value"}`,
-		},
-		{
-			name: "sub struct with int",
-			field: func() reflect.StructField {
-				type s2 struct {
-					Vout int
-				}
-				type s struct {
-					Test s2
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `{"vout":n}`,
-		},
-		{
-			name: "sub struct with float",
-			field: func() reflect.StructField {
-				type s2 struct {
-					Amount float64
-				}
-				type s struct {
-					Test s2
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `{"amount":n.nnn}`,
-		},
-		{
-			name: "sub struct with sub struct",
-			field: func() reflect.StructField {
-				type s3 struct {
-					Amount float64
-				}
-				type s2 struct {
-					Template s3
-				}
-				type s struct {
-					Test s2
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `{"template":{"amount":n.nnn}}`,
-		},
-		{
-			name: "sub struct with slice",
-			field: func() reflect.StructField {
-				type s2 struct {
-					Capabilities []string
-				}
-				type s struct {
-					Test s2
-				}
-				return reflect.TypeOf((*s)(nil)).Elem().Field(0)
-			}(),
-			defValue: nil,
-			expected: `{"capabilities":["capability",...]}`,
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		// Ensure usage matches the expected value.
-		usage := btcjson.TstFieldUsage(test.field, test.defValue)
-		if usage != test.expected {
-			t.Errorf("Test #%d (%s) mismatched usage - got %v, "+
-				"want %v", i, test.name, usage, test.expected)
-			continue
-		}
-	}
-}

btcjson/cmdparse_test.go

@@ -1,593 +0,0 @@
-// Copyright (c) 2014 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package btcjson_test
-
-import (
-	"encoding/json"
-	"math"
-	"reflect"
-	"testing"
-
-	"github.com/btcsuite/btcd/btcjson"
-)
-
-// TestAssignField tests the assignField function handles supported combinations
-// properly.
-func TestAssignField(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name     string
-		dest     interface{}
-		src      interface{}
-		expected interface{}
-	}{
-		{
-			name:     "same types",
-			dest:     int8(0),
-			src:      int8(100),
-			expected: int8(100),
-		},
-		{
-			name: "same types - more source pointers",
-			dest: int8(0),
-			src: func() interface{} {
-				i := int8(100)
-				return &i
-			}(),
-			expected: int8(100),
-		},
-		{
-			name: "same types - more dest pointers",
-			dest: func() interface{} {
-				i := int8(0)
-				return &i
-			}(),
-			src:      int8(100),
-			expected: int8(100),
-		},
-		{
-			name: "convertible types - more source pointers",
-			dest: int16(0),
-			src: func() interface{} {
-				i := int8(100)
-				return &i
-			}(),
-			expected: int16(100),
-		},
-		{
-			name: "convertible types - both pointers",
-			dest: func() interface{} {
-				i := int8(0)
-				return &i
-			}(),
-			src: func() interface{} {
-				i := int16(100)
-				return &i
-			}(),
-			expected: int8(100),
-		},
-		{
-			name:     "convertible types - int16 -> int8",
-			dest:     int8(0),
-			src:      int16(100),
-			expected: int8(100),
-		},
-		{
-			name:     "convertible types - int16 -> uint8",
-			dest:     uint8(0),
-			src:      int16(100),
-			expected: uint8(100),
-		},
-		{
-			name:     "convertible types - uint16 -> int8",
-			dest:     int8(0),
-			src:      uint16(100),
-			expected: int8(100),
-		},
-		{
-			name:     "convertible types - uint16 -> uint8",
-			dest:     uint8(0),
-			src:      uint16(100),
-			expected: uint8(100),
-		},
-		{
-			name:     "convertible types - float32 -> float64",
-			dest:     float64(0),
-			src:      float32(1.5),
-			expected: float64(1.5),
-		},
-		{
-			name:     "convertible types - float64 -> float32",
-			dest:     float32(0),
-			src:      float64(1.5),
-			expected: float32(1.5),
-		},
-		{
-			name:     "convertible types - string -> bool",
-			dest:     false,
-			src:      "true",
-			expected: true,
-		},
-		{
-			name:     "convertible types - string -> int8",
-			dest:     int8(0),
-			src:      "100",
-			expected: int8(100),
-		},
-		{
-			name:     "convertible types - string -> uint8",
-			dest:     uint8(0),
-			src:      "100",
-			expected: uint8(100),
-		},
-		{
-			name:     "convertible types - string -> float32",
-			dest:     float32(0),
-			src:      "1.5",
-			expected: float32(1.5),
-		},
-		{
-			name: "convertible types - typecase string -> string",
-			dest: "",
-			src: func() interface{} {
-				type foo string
-				return foo("foo")
-			}(),
-			expected: "foo",
-		},
-		{
-			name:     "convertible types - string -> array",
-			dest:     [2]string{},
-			src:      `["test","test2"]`,
-			expected: [2]string{"test", "test2"},
-		},
-		{
-			name:     "convertible types - string -> slice",
-			dest:     []string{},
-			src:      `["test","test2"]`,
-			expected: []string{"test", "test2"},
-		},
-		{
-			name:     "convertible types - string -> struct",
-			dest:     struct{ A int }{},
-			src:      `{"A":100}`,
-			expected: struct{ A int }{100},
-		},
-		{
-			name:     "convertible types - string -> map",
-			dest:     map[string]float64{},
-			src:      `{"1Address":1.5}`,
-			expected: map[string]float64{"1Address": 1.5},
-		},
-		{
-			name:     `null optional field - "null" -> *int32`,
-			dest:     btcjson.Int32(0),
-			src:      "null",
-			expected: nil,
-		},
-		{
-			name:     `null optional field - "null" -> *string`,
-			dest:     btcjson.String(""),
-			src:      "null",
-			expected: nil,
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		dst := reflect.New(reflect.TypeOf(test.dest)).Elem()
-		src := reflect.ValueOf(test.src)
-		err := btcjson.TstAssignField(1, "testField", dst, src)
-		if err != nil {
-			t.Errorf("Test #%d (%s) unexpected error: %v", i,
-				test.name, err)
-			continue
-		}
-
-		// Check case where null string is used on optional field
-		if dst.Kind() == reflect.Ptr && test.src == "null" {
-			if !dst.IsNil() {
-				t.Errorf("Test #%d (%s) unexpected value - got %v, "+
-					"want nil", i, test.name, dst.Interface())
-			}
-			continue
-		}
-
-		// Inidirect through to the base types to ensure their values
-		// are the same.
-		for dst.Kind() == reflect.Ptr {
-			dst = dst.Elem()
-		}
-		if !reflect.DeepEqual(dst.Interface(), test.expected) {
-			t.Errorf("Test #%d (%s) unexpected value - got %v, "+
-				"want %v", i, test.name, dst.Interface(),
-				test.expected)
-			continue
-		}
-	}
-}
-
-// TestAssignFieldErrors tests the assignField function error paths.
-func TestAssignFieldErrors(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name string
-		dest interface{}
-		src  interface{}
-		err  btcjson.Error
-	}{
-		{
-			name: "general incompatible int -> string",
-			dest: "\x00",
-			src:  int(0),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow source int -> dest int",
-			dest: int8(0),
-			src:  int(128),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow source int -> dest uint",
-			dest: uint8(0),
-			src:  int(256),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "int -> float",
-			dest: float32(0),
-			src:  int(256),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow source uint64 -> dest int64",
-			dest: int64(0),
-			src:  uint64(1 << 63),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow source uint -> dest int",
-			dest: int8(0),
-			src:  uint(128),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow source uint -> dest uint",
-			dest: uint8(0),
-			src:  uint(256),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "uint -> float",
-			dest: float32(0),
-			src:  uint(256),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "float -> int",
-			dest: int(0),
-			src:  float32(1.0),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow float64 -> float32",
-			dest: float32(0),
-			src:  float64(math.MaxFloat64),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid string -> bool",
-			dest: true,
-			src:  "foo",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid string -> int",
-			dest: int8(0),
-			src:  "foo",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow string -> int",
-			dest: int8(0),
-			src:  "128",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid string -> uint",
-			dest: uint8(0),
-			src:  "foo",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow string -> uint",
-			dest: uint8(0),
-			src:  "256",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid string -> float",
-			dest: float32(0),
-			src:  "foo",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "overflow string -> float",
-			dest: float32(0),
-			src:  "1.7976931348623157e+308",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid string -> array",
-			dest: [3]int{},
-			src:  "foo",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid string -> slice",
-			dest: []int{},
-			src:  "foo",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid string -> struct",
-			dest: struct{ A int }{},
-			src:  "foo",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid string -> map",
-			dest: map[string]int{},
-			src:  "foo",
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		dst := reflect.New(reflect.TypeOf(test.dest)).Elem()
-		src := reflect.ValueOf(test.src)
-		err := btcjson.TstAssignField(1, "testField", dst, src)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%[3]v), "+
-				"want %T", i, test.name, err, test.err)
-			continue
-		}
-		gotErrorCode := err.(btcjson.Error).ErrorCode
-		if gotErrorCode != test.err.ErrorCode {
-			t.Errorf("Test #%d (%s) mismatched error code - got "+
-				"%v (%v), want %v", i, test.name, gotErrorCode,
-				err, test.err.ErrorCode)
-			continue
-		}
-	}
-}
-
-// TestNewCmdErrors ensures the error paths of NewCmd behave as expected.
-func TestNewCmdErrors(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name   string
-		method string
-		args   []interface{}
-		err    btcjson.Error
-	}{
-		{
-			name:   "unregistered command",
-			method: "boguscommand",
-			args:   []interface{}{},
-			err:    btcjson.Error{ErrorCode: btcjson.ErrUnregisteredMethod},
-		},
-		{
-			name:   "too few parameters to command with required + optional",
-			method: "getblock",
-			args:   []interface{}{},
-			err:    btcjson.Error{ErrorCode: btcjson.ErrNumParams},
-		},
-		{
-			name:   "too many parameters to command with no optional",
-			method: "getblockcount",
-			args:   []interface{}{"123"},
-			err:    btcjson.Error{ErrorCode: btcjson.ErrNumParams},
-		},
-		{
-			name:   "incorrect parameter type",
-			method: "getblock",
-			args:   []interface{}{1},
-			err:    btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		_, err := btcjson.NewCmd(test.method, test.args...)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%v), "+
-				"want %T", i, test.name, err, err, test.err)
-			continue
-		}
-		gotErrorCode := err.(btcjson.Error).ErrorCode
-		if gotErrorCode != test.err.ErrorCode {
-			t.Errorf("Test #%d (%s) mismatched error code - got "+
-				"%v (%v), want %v", i, test.name, gotErrorCode,
-				err, test.err.ErrorCode)
-			continue
-		}
-	}
-}
-
-// TestMarshalCmd tests the MarshalCmd function.
-func TestMarshalCmd(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name     string
-		id       interface{}
-		cmd      interface{}
-		expected string
-	}{
-		{
-			name:     "include all parameters",
-			id:       1,
-			cmd:      btcjson.NewGetNetworkHashPSCmd(btcjson.Int(100), btcjson.Int(2000)),
-			expected: `{"jsonrpc":"1.0","method":"getnetworkhashps","params":[100,2000],"id":1}`,
-		},
-		{
-			name:     "include padding null parameter",
-			id:       1,
-			cmd:      btcjson.NewGetNetworkHashPSCmd(nil, btcjson.Int(2000)),
-			expected: `{"jsonrpc":"1.0","method":"getnetworkhashps","params":[null,2000],"id":1}`,
-		},
-		{
-			name:     "omit single unnecessary null parameter",
-			id:       1,
-			cmd:      btcjson.NewGetNetworkHashPSCmd(btcjson.Int(100), nil),
-			expected: `{"jsonrpc":"1.0","method":"getnetworkhashps","params":[100],"id":1}`,
-		},
-		{
-			name:     "omit unnecessary null parameters",
-			id:       1,
-			cmd:      btcjson.NewGetNetworkHashPSCmd(nil, nil),
-			expected: `{"jsonrpc":"1.0","method":"getnetworkhashps","params":[],"id":1}`,
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		bytes, err := btcjson.MarshalCmd(btcjson.RpcVersion1, test.id, test.cmd)
-		if err != nil {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%v)",
-				i, test.name, err, err)
-			continue
-		}
-		marshalled := string(bytes)
-		if marshalled != test.expected {
-			t.Errorf("Test #%d (%s) mismatched marshall result - got "+
-				"%v, want %v", i, test.name, marshalled, test.expected)
-			continue
-		}
-	}
-}
-
-// TestMarshalCmdErrors  tests the error paths of the MarshalCmd function.
-func TestMarshalCmdErrors(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name string
-		id   interface{}
-		cmd  interface{}
-		err  btcjson.Error
-	}{
-		{
-			name: "unregistered type",
-			id:   1,
-			cmd:  (*int)(nil),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrUnregisteredMethod},
-		},
-		{
-			name: "nil instance of registered type",
-			id:   1,
-			cmd:  (*btcjson.GetBlockCmd)(nil),
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "nil instance of registered type",
-			id:   []int{0, 1},
-			cmd:  &btcjson.GetBlockCountCmd{},
-			err:  btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		_, err := btcjson.MarshalCmd(btcjson.RpcVersion1, test.id, test.cmd)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%v), "+
-				"want %T", i, test.name, err, err, test.err)
-			continue
-		}
-		gotErrorCode := err.(btcjson.Error).ErrorCode
-		if gotErrorCode != test.err.ErrorCode {
-			t.Errorf("Test #%d (%s) mismatched error code - got "+
-				"%v (%v), want %v", i, test.name, gotErrorCode,
-				err, test.err.ErrorCode)
-			continue
-		}
-	}
-}
-
-// TestUnmarshalCmdErrors  tests the error paths of the UnmarshalCmd function.
-func TestUnmarshalCmdErrors(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name    string
-		request btcjson.Request
-		err     btcjson.Error
-	}{
-		{
-			name: "unregistered type",
-			request: btcjson.Request{
-				Jsonrpc: btcjson.RpcVersion1,
-				Method:  "bogusmethod",
-				Params:  nil,
-				ID:      nil,
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrUnregisteredMethod},
-		},
-		{
-			name: "incorrect number of params",
-			request: btcjson.Request{
-				Jsonrpc: btcjson.RpcVersion1,
-				Method:  "getblockcount",
-				Params:  []json.RawMessage{[]byte(`"bogusparam"`)},
-				ID:      nil,
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrNumParams},
-		},
-		{
-			name: "invalid type for a parameter",
-			request: btcjson.Request{
-				Jsonrpc: btcjson.RpcVersion1,
-				Method:  "getblock",
-				Params:  []json.RawMessage{[]byte("1")},
-				ID:      nil,
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name: "invalid JSON for a parameter",
-			request: btcjson.Request{
-				Jsonrpc: btcjson.RpcVersion1,
-				Method:  "getblock",
-				Params:  []json.RawMessage{[]byte(`"1`)},
-				ID:      nil,
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		_, err := btcjson.UnmarshalCmd(&test.request)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%v), "+
-				"want %T", i, test.name, err, err, test.err)
-			continue
-		}
-		gotErrorCode := err.(btcjson.Error).ErrorCode
-		if gotErrorCode != test.err.ErrorCode {
-			t.Errorf("Test #%d (%s) mismatched error code - got "+
-				"%v (%v), want %v", i, test.name, gotErrorCode,
-				err, test.err.ErrorCode)
-			continue
-		}
-	}
-}

btcjson/error_test.go

@@ -1,80 +0,0 @@
-// Copyright (c) 2014 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package btcjson_test
-
-import (
-	"testing"
-
-	"github.com/btcsuite/btcd/btcjson"
-)
-
-// TestErrorCodeStringer tests the stringized output for the ErrorCode type.
-func TestErrorCodeStringer(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		in   btcjson.ErrorCode
-		want string
-	}{
-		{btcjson.ErrDuplicateMethod, "ErrDuplicateMethod"},
-		{btcjson.ErrInvalidUsageFlags, "ErrInvalidUsageFlags"},
-		{btcjson.ErrInvalidType, "ErrInvalidType"},
-		{btcjson.ErrEmbeddedType, "ErrEmbeddedType"},
-		{btcjson.ErrUnexportedField, "ErrUnexportedField"},
-		{btcjson.ErrUnsupportedFieldType, "ErrUnsupportedFieldType"},
-		{btcjson.ErrNonOptionalField, "ErrNonOptionalField"},
-		{btcjson.ErrNonOptionalDefault, "ErrNonOptionalDefault"},
-		{btcjson.ErrMismatchedDefault, "ErrMismatchedDefault"},
-		{btcjson.ErrUnregisteredMethod, "ErrUnregisteredMethod"},
-		{btcjson.ErrNumParams, "ErrNumParams"},
-		{btcjson.ErrMissingDescription, "ErrMissingDescription"},
-		{0xffff, "Unknown ErrorCode (65535)"},
-	}
-
-	// Detect additional error codes that don't have the stringer added.
-	if len(tests)-1 != int(btcjson.TstNumErrorCodes) {
-		t.Errorf("It appears an error code was added without adding an " +
-			"associated stringer test")
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		result := test.in.String()
-		if result != test.want {
-			t.Errorf("String #%d\n got: %s want: %s", i, result,
-				test.want)
-			continue
-		}
-	}
-}
-
-// TestError tests the error output for the Error type.
-func TestError(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		in   btcjson.Error
-		want string
-	}{
-		{
-			btcjson.Error{Description: "some error"},
-			"some error",
-		},
-		{
-			btcjson.Error{Description: "human-readable error"},
-			"human-readable error",
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		result := test.in.Error()
-		if result != test.want {
-			t.Errorf("Error #%d\n got: %s want: %s", i, result,
-				test.want)
-			continue
-		}
-	}
-}

btcjson/help_test.go

@@ -1,737 +0,0 @@
-// Copyright (c) 2014 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package btcjson_test
-
-import (
-	"reflect"
-	"testing"
-
-	"github.com/btcsuite/btcd/btcjson"
-)
-
-// TestHelpReflectInternals ensures the various help functions which deal with
-// reflect types work as expected for various Go types.
-func TestHelpReflectInternals(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name        string
-		reflectType reflect.Type
-		indentLevel int
-		key         string
-		examples    []string
-		isComplex   bool
-		help        string
-		isInvalid   bool
-	}{
-		{
-			name:        "int",
-			reflectType: reflect.TypeOf(int(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "*int",
-			reflectType: reflect.TypeOf((*int)(nil)),
-			key:         "json-type-value",
-			examples:    []string{"n"},
-			help:        "n (json-type-value) fdk",
-			isInvalid:   true,
-		},
-		{
-			name:        "int8",
-			reflectType: reflect.TypeOf(int8(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "int16",
-			reflectType: reflect.TypeOf(int16(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "int32",
-			reflectType: reflect.TypeOf(int32(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "int64",
-			reflectType: reflect.TypeOf(int64(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "uint",
-			reflectType: reflect.TypeOf(uint(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "uint8",
-			reflectType: reflect.TypeOf(uint8(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "uint16",
-			reflectType: reflect.TypeOf(uint16(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "uint32",
-			reflectType: reflect.TypeOf(uint32(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "uint64",
-			reflectType: reflect.TypeOf(uint64(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n"},
-			help:        "n (json-type-numeric) fdk",
-		},
-		{
-			name:        "float32",
-			reflectType: reflect.TypeOf(float32(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n.nnn"},
-			help:        "n.nnn (json-type-numeric) fdk",
-		},
-		{
-			name:        "float64",
-			reflectType: reflect.TypeOf(float64(0)),
-			key:         "json-type-numeric",
-			examples:    []string{"n.nnn"},
-			help:        "n.nnn (json-type-numeric) fdk",
-		},
-		{
-			name:        "string",
-			reflectType: reflect.TypeOf(""),
-			key:         "json-type-string",
-			examples:    []string{`"json-example-string"`},
-			help:        "\"json-example-string\" (json-type-string) fdk",
-		},
-		{
-			name:        "bool",
-			reflectType: reflect.TypeOf(true),
-			key:         "json-type-bool",
-			examples:    []string{"json-example-bool"},
-			help:        "json-example-bool (json-type-bool) fdk",
-		},
-		{
-			name:        "array of int",
-			reflectType: reflect.TypeOf([1]int{0}),
-			key:         "json-type-arrayjson-type-numeric",
-			examples:    []string{"[n,...]"},
-			help:        "[n,...] (json-type-arrayjson-type-numeric) fdk",
-		},
-		{
-			name:        "slice of int",
-			reflectType: reflect.TypeOf([]int{0}),
-			key:         "json-type-arrayjson-type-numeric",
-			examples:    []string{"[n,...]"},
-			help:        "[n,...] (json-type-arrayjson-type-numeric) fdk",
-		},
-		{
-			name:        "struct",
-			reflectType: reflect.TypeOf(struct{}{}),
-			key:         "json-type-object",
-			examples:    []string{"{", "}\t\t"},
-			isComplex:   true,
-			help:        "{\n} ",
-		},
-		{
-			name:        "struct indent level 1",
-			reflectType: reflect.TypeOf(struct{ field int }{}),
-			indentLevel: 1,
-			key:         "json-type-object",
-			examples: []string{
-				"  \"field\": n,\t(json-type-numeric)\t-field",
-				" },\t\t",
-			},
-			help: "{\n" +
-				" \"field\": n, (json-type-numeric) -field\n" +
-				"}            ",
-			isComplex: true,
-		},
-		{
-			name: "array of struct indent level 0",
-			reflectType: func() reflect.Type {
-				type s struct {
-					field int
-				}
-				return reflect.TypeOf([]s{})
-			}(),
-			key: "json-type-arrayjson-type-object",
-			examples: []string{
-				"[{",
-				" \"field\": n,\t(json-type-numeric)\ts-field",
-				"},...]",
-			},
-			help: "[{\n" +
-				" \"field\": n, (json-type-numeric) s-field\n" +
-				"},...]",
-			isComplex: true,
-		},
-		{
-			name: "array of struct indent level 1",
-			reflectType: func() reflect.Type {
-				type s struct {
-					field int
-				}
-				return reflect.TypeOf([]s{})
-			}(),
-			indentLevel: 1,
-			key:         "json-type-arrayjson-type-object",
-			examples: []string{
-				"  \"field\": n,\t(json-type-numeric)\ts-field",
-				" },...],\t\t",
-			},
-			help: "[{\n" +
-				" \"field\": n, (json-type-numeric) s-field\n" +
-				"},...]",
-			isComplex: true,
-		},
-		{
-			name:        "map",
-			reflectType: reflect.TypeOf(map[string]string{}),
-			key:         "json-type-object",
-			examples: []string{"{",
-				" \"fdk--key\": fdk--value, (json-type-object) fdk--desc",
-				" ...", "}",
-			},
-			help: "{\n" +
-				" \"fdk--key\": fdk--value, (json-type-object) fdk--desc\n" +
-				" ...\n" +
-				"}",
-			isComplex: true,
-		},
-		{
-			name:        "complex",
-			reflectType: reflect.TypeOf(complex64(0)),
-			key:         "json-type-value",
-			examples:    []string{"json-example-unknown"},
-			help:        "json-example-unknown (json-type-value) fdk",
-			isInvalid:   true,
-		},
-	}
-
-	xT := func(key string) string {
-		return key
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		// Ensure the description key is the expected value.
-		key := btcjson.TstReflectTypeToJSONType(xT, test.reflectType)
-		if key != test.key {
-			t.Errorf("Test #%d (%s) unexpected key - got: %v, "+
-				"want: %v", i, test.name, key, test.key)
-			continue
-		}
-
-		// Ensure the generated example is as expected.
-		examples, isComplex := btcjson.TstReflectTypeToJSONExample(xT,
-			test.reflectType, test.indentLevel, "fdk")
-		if isComplex != test.isComplex {
-			t.Errorf("Test #%d (%s) unexpected isComplex - got: %v, "+
-				"want: %v", i, test.name, isComplex,
-				test.isComplex)
-			continue
-		}
-		if len(examples) != len(test.examples) {
-			t.Errorf("Test #%d (%s) unexpected result length - "+
-				"got: %v, want: %v", i, test.name, len(examples),
-				len(test.examples))
-			continue
-		}
-		for j, example := range examples {
-			if example != test.examples[j] {
-				t.Errorf("Test #%d (%s) example #%d unexpected "+
-					"example - got: %v, want: %v", i,
-					test.name, j, example, test.examples[j])
-				continue
-			}
-		}
-
-		// Ensure the generated result type help is as expected.
-		helpText := btcjson.TstResultTypeHelp(xT, test.reflectType, "fdk")
-		if helpText != test.help {
-			t.Errorf("Test #%d (%s) unexpected result help - "+
-				"got: %v, want: %v", i, test.name, helpText,
-				test.help)
-			continue
-		}
-
-		isValid := btcjson.TstIsValidResultType(test.reflectType.Kind())
-		if isValid != !test.isInvalid {
-			t.Errorf("Test #%d (%s) unexpected result type validity "+
-				"- got: %v", i, test.name, isValid)
-			continue
-		}
-	}
-}
-
-// TestResultStructHelp ensures the expected help text format is returned for
-// various Go struct types.
-func TestResultStructHelp(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name        string
-		reflectType reflect.Type
-		expected    []string
-	}{
-		{
-			name: "empty struct",
-			reflectType: func() reflect.Type {
-				type s struct{}
-				return reflect.TypeOf(s{})
-			}(),
-			expected: nil,
-		},
-		{
-			name: "struct with primitive field",
-			reflectType: func() reflect.Type {
-				type s struct {
-					field int
-				}
-				return reflect.TypeOf(s{})
-			}(),
-			expected: []string{
-				"\"field\": n,\t(json-type-numeric)\ts-field",
-			},
-		},
-		{
-			name: "struct with primitive field and json tag",
-			reflectType: func() reflect.Type {
-				type s struct {
-					Field int `json:"f"`
-				}
-				return reflect.TypeOf(s{})
-			}(),
-			expected: []string{
-				"\"f\": n,\t(json-type-numeric)\ts-f",
-			},
-		},
-		{
-			name: "struct with array of primitive field",
-			reflectType: func() reflect.Type {
-				type s struct {
-					field []int
-				}
-				return reflect.TypeOf(s{})
-			}(),
-			expected: []string{
-				"\"field\": [n,...],\t(json-type-arrayjson-type-numeric)\ts-field",
-			},
-		},
-		{
-			name: "struct with sub-struct field",
-			reflectType: func() reflect.Type {
-				type s2 struct {
-					subField int
-				}
-				type s struct {
-					field s2
-				}
-				return reflect.TypeOf(s{})
-			}(),
-			expected: []string{
-				"\"field\": {\t(json-type-object)\ts-field",
-				"{",
-				" \"subfield\": n,\t(json-type-numeric)\ts2-subfield",
-				"}\t\t",
-			},
-		},
-		{
-			name: "struct with sub-struct field pointer",
-			reflectType: func() reflect.Type {
-				type s2 struct {
-					subField int
-				}
-				type s struct {
-					field *s2
-				}
-				return reflect.TypeOf(s{})
-			}(),
-			expected: []string{
-				"\"field\": {\t(json-type-object)\ts-field",
-				"{",
-				" \"subfield\": n,\t(json-type-numeric)\ts2-subfield",
-				"}\t\t",
-			},
-		},
-		{
-			name: "struct with array of structs field",
-			reflectType: func() reflect.Type {
-				type s2 struct {
-					subField int
-				}
-				type s struct {
-					field []s2
-				}
-				return reflect.TypeOf(s{})
-			}(),
-			expected: []string{
-				"\"field\": [{\t(json-type-arrayjson-type-object)\ts-field",
-				"[{",
-				" \"subfield\": n,\t(json-type-numeric)\ts2-subfield",
-				"},...]",
-			},
-		},
-	}
-
-	xT := func(key string) string {
-		return key
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		results := btcjson.TstResultStructHelp(xT, test.reflectType, 0)
-		if len(results) != len(test.expected) {
-			t.Errorf("Test #%d (%s) unexpected result length - "+
-				"got: %v, want: %v", i, test.name, len(results),
-				len(test.expected))
-			continue
-		}
-		for j, result := range results {
-			if result != test.expected[j] {
-				t.Errorf("Test #%d (%s) result #%d unexpected "+
-					"result - got: %v, want: %v", i,
-					test.name, j, result, test.expected[j])
-				continue
-			}
-		}
-	}
-}
-
-// TestHelpArgInternals ensures the various help functions which deal with
-// arguments work as expected for various argument types.
-func TestHelpArgInternals(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name        string
-		method      string
-		reflectType reflect.Type
-		defaults    map[int]reflect.Value
-		help        string
-	}{
-		{
-			name:   "command with no args",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct{}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			defaults: nil,
-			help:     "",
-		},
-		{
-			name:   "command with one required arg",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct {
-					Field int
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			defaults: nil,
-			help:     "1. field (json-type-numeric, help-required) test-field\n",
-		},
-		{
-			name:   "command with one optional arg, no default",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct {
-					Optional *int
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			defaults: nil,
-			help:     "1. optional (json-type-numeric, help-optional) test-optional\n",
-		},
-		{
-			name:   "command with one optional arg with default",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct {
-					Optional *string
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			defaults: func() map[int]reflect.Value {
-				defVal := "test"
-				return map[int]reflect.Value{
-					0: reflect.ValueOf(&defVal),
-				}
-			}(),
-			help: "1. optional (json-type-string, help-optional, help-default=\"test\") test-optional\n",
-		},
-		{
-			name:   "command with struct field",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s2 struct {
-					F int8
-				}
-				type s struct {
-					Field s2
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			defaults: nil,
-			help: "1. field (json-type-object, help-required) test-field\n" +
-				"{\n" +
-				" \"f\": n, (json-type-numeric) s2-f\n" +
-				"}        \n",
-		},
-		{
-			name:   "command with map field",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct {
-					Field map[string]float64
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			defaults: nil,
-			help: "1. field (json-type-object, help-required) test-field\n" +
-				"{\n" +
-				" \"test-field--key\": test-field--value, (json-type-object) test-field--desc\n" +
-				" ...\n" +
-				"}\n",
-		},
-		{
-			name:   "command with slice of primitives field",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct {
-					Field []int64
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			defaults: nil,
-			help:     "1. field (json-type-arrayjson-type-numeric, help-required) test-field\n",
-		},
-		{
-			name:   "command with slice of structs field",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s2 struct {
-					F int64
-				}
-				type s struct {
-					Field []s2
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			defaults: nil,
-			help: "1. field (json-type-arrayjson-type-object, help-required) test-field\n" +
-				"[{\n" +
-				" \"f\": n, (json-type-numeric) s2-f\n" +
-				"},...]\n",
-		},
-	}
-
-	xT := func(key string) string {
-		return key
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		help := btcjson.TstArgHelp(xT, test.reflectType, test.defaults,
-			test.method)
-		if help != test.help {
-			t.Errorf("Test #%d (%s) unexpected help - got:\n%v\n"+
-				"want:\n%v", i, test.name, help, test.help)
-			continue
-		}
-	}
-}
-
-// TestMethodHelp ensures the method help function works as expected for various
-// command structs.
-func TestMethodHelp(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name        string
-		method      string
-		reflectType reflect.Type
-		defaults    map[int]reflect.Value
-		resultTypes []interface{}
-		help        string
-	}{
-		{
-			name:   "command with no args or results",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct{}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			help: "test\n\ntest--synopsis\n\n" +
-				"help-arguments:\nhelp-arguments-none\n\n" +
-				"help-result:\nhelp-result-nothing\n",
-		},
-		{
-			name:   "command with no args and one primitive result",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct{}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			resultTypes: []interface{}{(*int64)(nil)},
-			help: "test\n\ntest--synopsis\n\n" +
-				"help-arguments:\nhelp-arguments-none\n\n" +
-				"help-result:\nn (json-type-numeric) test--result0\n",
-		},
-		{
-			name:   "command with no args and two results",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct{}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			resultTypes: []interface{}{(*int64)(nil), nil},
-			help: "test\n\ntest--synopsis\n\n" +
-				"help-arguments:\nhelp-arguments-none\n\n" +
-				"help-result (test--condition0):\nn (json-type-numeric) test--result0\n\n" +
-				"help-result (test--condition1):\nhelp-result-nothing\n",
-		},
-		{
-			name:   "command with primitive arg and no results",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct {
-					Field bool
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			help: "test field\n\ntest--synopsis\n\n" +
-				"help-arguments:\n1. field (json-type-bool, help-required) test-field\n\n" +
-				"help-result:\nhelp-result-nothing\n",
-		},
-		{
-			name:   "command with primitive optional and no results",
-			method: "test",
-			reflectType: func() reflect.Type {
-				type s struct {
-					Field *bool
-				}
-				return reflect.TypeOf((*s)(nil))
-			}(),
-			help: "test (field)\n\ntest--synopsis\n\n" +
-				"help-arguments:\n1. field (json-type-bool, help-optional) test-field\n\n" +
-				"help-result:\nhelp-result-nothing\n",
-		},
-	}
-
-	xT := func(key string) string {
-		return key
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		help := btcjson.TestMethodHelp(xT, test.reflectType,
-			test.defaults, test.method, test.resultTypes)
-		if help != test.help {
-			t.Errorf("Test #%d (%s) unexpected help - got:\n%v\n"+
-				"want:\n%v", i, test.name, help, test.help)
-			continue
-		}
-	}
-}
-
-// TestGenerateHelpErrors ensures the GenerateHelp function returns the expected
-// errors.
-func TestGenerateHelpErrors(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name        string
-		method      string
-		resultTypes []interface{}
-		err         btcjson.Error
-	}{
-		{
-			name:   "unregistered command",
-			method: "boguscommand",
-			err:    btcjson.Error{ErrorCode: btcjson.ErrUnregisteredMethod},
-		},
-		{
-			name:        "non-pointer result type",
-			method:      "help",
-			resultTypes: []interface{}{0},
-			err:         btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name:        "invalid result type",
-			method:      "help",
-			resultTypes: []interface{}{(*complex64)(nil)},
-			err:         btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name:        "missing description",
-			method:      "help",
-			resultTypes: []interface{}{(*string)(nil), nil},
-			err:         btcjson.Error{ErrorCode: btcjson.ErrMissingDescription},
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		_, err := btcjson.GenerateHelp(test.method, nil,
-			test.resultTypes...)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T (%v), "+
-				"want %T", i, test.name, err, err, test.err)
-			continue
-		}
-		gotErrorCode := err.(btcjson.Error).ErrorCode
-		if gotErrorCode != test.err.ErrorCode {
-			t.Errorf("Test #%d (%s) mismatched error code - got "+
-				"%v (%v), want %v", i, test.name, gotErrorCode,
-				err, test.err.ErrorCode)
-			continue
-		}
-	}
-}
-
-// TestGenerateHelp performs a very basic test to ensure GenerateHelp is working
-// as expected.  The internal are testd much more thoroughly in other tests, so
-// there is no need to add more tests here.
-func TestGenerateHelp(t *testing.T) {
-	t.Parallel()
-
-	descs := map[string]string{
-		"help--synopsis": "test",
-		"help-command":   "test",
-	}
-	help, err := btcjson.GenerateHelp("help", descs)
-	if err != nil {
-		t.Fatalf("GenerateHelp: unexpected error: %v", err)
-	}
-	wantHelp := "help (\"command\")\n\n" +
-		"test\n\nArguments:\n1. command (string, optional) test\n\n" +
-		"Result:\nNothing\n"
-	if help != wantHelp {
-		t.Fatalf("GenerateHelp: unexpected help - got\n%v\nwant\n%v",
-			help, wantHelp)
-	}
-}

btcjson/register_test.go

@@ -1,263 +0,0 @@
-// Copyright (c) 2014 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package btcjson_test
-
-import (
-	"reflect"
-	"sort"
-	"testing"
-
-	"github.com/btcsuite/btcd/btcjson"
-)
-
-// TestUsageFlagStringer tests the stringized output for the UsageFlag type.
-func TestUsageFlagStringer(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		in   btcjson.UsageFlag
-		want string
-	}{
-		{0, "0x0"},
-		{btcjson.UFWalletOnly, "UFWalletOnly"},
-		{btcjson.UFWebsocketOnly, "UFWebsocketOnly"},
-		{btcjson.UFNotification, "UFNotification"},
-		{btcjson.UFWalletOnly | btcjson.UFWebsocketOnly,
-			"UFWalletOnly|UFWebsocketOnly"},
-		{btcjson.UFWalletOnly | btcjson.UFWebsocketOnly | (1 << 31),
-			"UFWalletOnly|UFWebsocketOnly|0x80000000"},
-	}
-
-	// Detect additional usage flags that don't have the stringer added.
-	numUsageFlags := 0
-	highestUsageFlagBit := btcjson.TstHighestUsageFlagBit
-	for highestUsageFlagBit > 1 {
-		numUsageFlags++
-		highestUsageFlagBit >>= 1
-	}
-	if len(tests)-3 != numUsageFlags {
-		t.Errorf("It appears a usage flag was added without adding " +
-			"an associated stringer test")
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		result := test.in.String()
-		if result != test.want {
-			t.Errorf("String #%d\n got: %s want: %s", i, result,
-				test.want)
-			continue
-		}
-	}
-}
-
-// TestRegisterCmdErrors ensures the RegisterCmd function returns the expected
-// error when provided with invalid types.
-func TestRegisterCmdErrors(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name    string
-		method  string
-		cmdFunc func() interface{}
-		flags   btcjson.UsageFlag
-		err     btcjson.Error
-	}{
-		{
-			name:   "duplicate method",
-			method: "getblock",
-			cmdFunc: func() interface{} {
-				return struct{}{}
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrDuplicateMethod},
-		},
-		{
-			name:   "invalid usage flags",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				return 0
-			},
-			flags: btcjson.TstHighestUsageFlagBit,
-			err:   btcjson.Error{ErrorCode: btcjson.ErrInvalidUsageFlags},
-		},
-		{
-			name:   "invalid type",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				return 0
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name:   "invalid type 2",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				return &[]string{}
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrInvalidType},
-		},
-		{
-			name:   "embedded field",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct{ int }
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrEmbeddedType},
-		},
-		{
-			name:   "unexported field",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct{ a int }
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrUnexportedField},
-		},
-		{
-			name:   "unsupported field type 1",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct{ A **int }
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrUnsupportedFieldType},
-		},
-		{
-			name:   "unsupported field type 2",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct{ A chan int }
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrUnsupportedFieldType},
-		},
-		{
-			name:   "unsupported field type 3",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct{ A complex64 }
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrUnsupportedFieldType},
-		},
-		{
-			name:   "unsupported field type 4",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct{ A complex128 }
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrUnsupportedFieldType},
-		},
-		{
-			name:   "unsupported field type 5",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct{ A func() }
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrUnsupportedFieldType},
-		},
-		{
-			name:   "unsupported field type 6",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct{ A interface{} }
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrUnsupportedFieldType},
-		},
-		{
-			name:   "required after optional",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct {
-					A *int
-					B int
-				}
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrNonOptionalField},
-		},
-		{
-			name:   "non-optional with default",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct {
-					A int `jsonrpcdefault:"1"`
-				}
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrNonOptionalDefault},
-		},
-		{
-			name:   "mismatched default",
-			method: "registertestcmd",
-			cmdFunc: func() interface{} {
-				type test struct {
-					A *int `jsonrpcdefault:"1.7"`
-				}
-				return (*test)(nil)
-			},
-			err: btcjson.Error{ErrorCode: btcjson.ErrMismatchedDefault},
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		err := btcjson.RegisterCmd(test.method, test.cmdFunc(),
-			test.flags)
-		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
-			t.Errorf("Test #%d (%s) wrong error - got %T, "+
-				"want %T", i, test.name, err, test.err)
-			continue
-		}
-		gotErrorCode := err.(btcjson.Error).ErrorCode
-		if gotErrorCode != test.err.ErrorCode {
-			t.Errorf("Test #%d (%s) mismatched error code - got "+
-				"%v, want %v", i, test.name, gotErrorCode,
-				test.err.ErrorCode)
-			continue
-		}
-	}
-}
-
-// TestMustRegisterCmdPanic ensures the MustRegisterCmd function panics when
-// used to register an invalid type.
-func TestMustRegisterCmdPanic(t *testing.T) {
-	t.Parallel()
-
-	// Setup a defer to catch the expected panic to ensure it actually
-	// paniced.
-	defer func() {
-		if err := recover(); err == nil {
-			t.Error("MustRegisterCmd did not panic as expected")
-		}
-	}()
-
-	// Intentionally try to register an invalid type to force a panic.
-	btcjson.MustRegisterCmd("panicme", 0, 0)
-}
-
-// TestRegisteredCmdMethods tests the RegisteredCmdMethods function ensure it
-// works as expected.
-func TestRegisteredCmdMethods(t *testing.T) {
-	t.Parallel()
-
-	// Ensure the registered methods are returned.
-	methods := btcjson.RegisteredCmdMethods()
-	if len(methods) == 0 {
-		t.Fatal("RegisteredCmdMethods: no methods")
-	}
-
-	// Ensure the returned methods are sorted.
-	sortedMethods := make([]string, len(methods))
-	copy(sortedMethods, methods)
-	sort.Strings(sortedMethods)
-	if !reflect.DeepEqual(sortedMethods, methods) {
-		t.Fatal("RegisteredCmdMethods: methods are not sorted")
-	}
-}

chaincfg/chainhash/hashfuncs.go

@@ -5,7 +5,12 @@
 
 package chainhash
 
-import "crypto/sha256"
+import (
+	"crypto/sha256"
+	"crypto/sha512"
+
+	"golang.org/x/crypto/ripemd160"
+)
 
 // HashB calculates hash(b) and returns the resulting bytes.
 func HashB(b []byte) []byte {
@@ -31,3 +36,26 @@ func DoubleHashH(b []byte) Hash {
 	first := sha256.Sum256(b)
 	return Hash(sha256.Sum256(first[:]))
 }
+
+// LbryPoWHashH calculates returns the PoW Hash.
+//
+//   doubled  := SHA256(SHA256(b))
+//   expanded := SHA512(doubled)
+//   left     := RIPEMD160(expanded[0:32])
+//   right    := RIPEMD160(expanded[32:64])
+//   result   := SHA256(SHA256(left||right))
+func LbryPoWHashH(b []byte) Hash {
+	doubled := DoubleHashB(b)
+	expanded := sha512.Sum512(doubled)
+
+	r := ripemd160.New()
+	r.Reset()
+	r.Write(expanded[:sha256.Size])
+	left := r.Sum(nil)
+
+	r.Reset()
+	r.Write(expanded[sha256.Size:])
+
+	combined := r.Sum(left)
+	return DoubleHashH(combined)
+}

chaincfg/genesis.go

@@ -22,33 +22,22 @@ var genesisCoinbaseTx = wire.MsgTx{
 				Index: 0xffffffff,
 			},
 			SignatureScript: []byte{
-				0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, 0x45, /* |.......E| */
-				0x54, 0x68, 0x65, 0x20, 0x54, 0x69, 0x6d, 0x65, /* |The Time| */
-				0x73, 0x20, 0x30, 0x33, 0x2f, 0x4a, 0x61, 0x6e, /* |s 03/Jan| */
-				0x2f, 0x32, 0x30, 0x30, 0x39, 0x20, 0x43, 0x68, /* |/2009 Ch| */
-				0x61, 0x6e, 0x63, 0x65, 0x6c, 0x6c, 0x6f, 0x72, /* |ancellor| */
-				0x20, 0x6f, 0x6e, 0x20, 0x62, 0x72, 0x69, 0x6e, /* | on brin| */
-				0x6b, 0x20, 0x6f, 0x66, 0x20, 0x73, 0x65, 0x63, /* |k of sec|*/
-				0x6f, 0x6e, 0x64, 0x20, 0x62, 0x61, 0x69, 0x6c, /* |ond bail| */
-				0x6f, 0x75, 0x74, 0x20, 0x66, 0x6f, 0x72, 0x20, /* |out for |*/
-				0x62, 0x61, 0x6e, 0x6b, 0x73, /* |banks| */
+				0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, 0x17,
+				0x69, 0x6e, 0x73, 0x65, 0x72, 0x74, 0x20, 0x74,
+				0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70,
+				0x20, 0x73, 0x74, 0x72, 0x69, 0x6e, 0x67,
 			},
 			Sequence: 0xffffffff,
 		},
 	},
 	TxOut: []*wire.TxOut{
 		{
-			Value: 0x12a05f200,
+			Value: 0x8e1bc9bf040000, // 400000000 * COIN
 			PkScript: []byte{
-				0x41, 0x04, 0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, /* |A.g....U| */
-				0x48, 0x27, 0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, /* |H'.g..q0| */
-				0xb7, 0x10, 0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, /* |..\..(.9| */
-				0x09, 0xa6, 0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, /* |..yb...a| */
-				0xde, 0xb6, 0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, /* |..I..?L.| */
-				0x38, 0xc4, 0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, /* |8..U....| */
-				0x12, 0xde, 0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, /* |..\8M...| */
-				0x8d, 0x57, 0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, /* |.W.Lp+k.| */
-				0x1d, 0x5f, 0xac, /* |._.| */
+				0x76, 0xa9, 0x14, 0x34, 0x59, 0x91, 0xdb, 0xf5,
+				0x7b, 0xfb, 0x01, 0x4b, 0x87, 0x00, 0x6a, 0xcd,
+				0xfa, 0xfb, 0xfc, 0x5f, 0xe8, 0x29, 0x2f, 0x88,
+				0xac,
 			},
 		},
 	},
@@ -58,19 +47,28 @@ var genesisCoinbaseTx = wire.MsgTx{
 // genesisHash is the hash of the first block in the block chain for the main
 // network (genesis block).
 var genesisHash = chainhash.Hash([chainhash.HashSize]byte{ // Make go vet happy.
-	0x6f, 0xe2, 0x8c, 0x0a, 0xb6, 0xf1, 0xb3, 0x72,
-	0xc1, 0xa6, 0xa2, 0x46, 0xae, 0x63, 0xf7, 0x4f,
-	0x93, 0x1e, 0x83, 0x65, 0xe1, 0x5a, 0x08, 0x9c,
-	0x68, 0xd6, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x63, 0xf4, 0x34, 0x6a, 0x4d, 0xb3, 0x4f, 0xdf,
+	0xce, 0x29, 0xa7, 0x0f, 0x5e, 0x8d, 0x11, 0xf0,
+	0x65, 0xf6, 0xb9, 0x16, 0x02, 0xb7, 0x03, 0x6c,
+	0x7f, 0x22, 0xf3, 0xa0, 0x3b, 0x28, 0x89, 0x9c,
 })
 
 // genesisMerkleRoot is the hash of the first transaction in the genesis block
 // for the main network.
 var genesisMerkleRoot = chainhash.Hash([chainhash.HashSize]byte{ // Make go vet happy.
-	0x3b, 0xa3, 0xed, 0xfd, 0x7a, 0x7b, 0x12, 0xb2,
-	0x7a, 0xc7, 0x2c, 0x3e, 0x67, 0x76, 0x8f, 0x61,
-	0x7f, 0xc8, 0x1b, 0xc3, 0x88, 0x8a, 0x51, 0x32,
-	0x3a, 0x9f, 0xb8, 0xaa, 0x4b, 0x1e, 0x5e, 0x4a,
+	0xcc, 0x59, 0xe5, 0x9f, 0xf9, 0x7a, 0xc0, 0x92,
+	0xb5, 0x5e, 0x42, 0x3a, 0xa5, 0x49, 0x51, 0x51,
+	0xed, 0x6f, 0xb8, 0x05, 0x70, 0xa5, 0xbb, 0x78,
+	0xcd, 0x5b, 0xd1, 0xc3, 0x82, 0x1c, 0x21, 0xb8,
+})
+
+// genesisClaimTrie is the hash of the first transaction in the genesis block
+// for the main network.
+var genesisClaimTrie = chainhash.Hash([chainhash.HashSize]byte{ // Make go vet happy.
+	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 })
 
 // genesisBlock defines the genesis block of the block chain which serves as the
@@ -79,10 +77,11 @@ var genesisBlock = wire.MsgBlock{
 	Header: wire.BlockHeader{
 		Version:    1,
 		PrevBlock:  chainhash.Hash{},         // 0000000000000000000000000000000000000000000000000000000000000000
-		MerkleRoot: genesisMerkleRoot,        // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
-		Timestamp:  time.Unix(0x495fab29, 0), // 2009-01-03 18:15:05 +0000 UTC
-		Bits:       0x1d00ffff,               // 486604799 [00000000ffff0000000000000000000000000000000000000000000000000000]
-		Nonce:      0x7c2bac1d,               // 2083236893
+		MerkleRoot: genesisMerkleRoot,        // b8211c82c3d15bcd78bba57005b86fed515149a53a425eb592c07af99fe559cc
+		ClaimTrie:  genesisClaimTrie,         // 0000000000000000000000000000000000000000000000000000000000000001
+		Timestamp:  time.Unix(1446058291, 0), // 28 Oct 2015 18:51:31 +0000 UTC
+		Bits:       0x1f00ffff,               // 486604799 [00000000ffff0000000000000000000000000000000000000000000000000000]
+		Nonce:      0x00000507,               // 1287
 	},
 	Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
 }
@@ -90,10 +89,10 @@ var genesisBlock = wire.MsgBlock{
 // regTestGenesisHash is the hash of the first block in the block chain for the
 // regression test network (genesis block).
 var regTestGenesisHash = chainhash.Hash([chainhash.HashSize]byte{ // Make go vet happy.
-	0x06, 0x22, 0x6e, 0x46, 0x11, 0x1a, 0x0b, 0x59,
-	0xca, 0xaf, 0x12, 0x60, 0x43, 0xeb, 0x5b, 0xbf,
-	0x28, 0xc3, 0x4f, 0x3a, 0x5e, 0x33, 0x2a, 0x1f,
-	0xc7, 0xb2, 0xb7, 0x3c, 0xf1, 0x88, 0x91, 0x0f,
+	0x56, 0x75, 0x68, 0x69, 0x76, 0x67, 0x4f, 0x50,
+	0xa0, 0xa1, 0x95, 0x3d, 0x17, 0x2e, 0x9e, 0xcf,
+	0x4a, 0x4a, 0x62, 0x1d, 0xc9, 0xa4, 0xc3, 0x79,
+	0x5d, 0xec, 0xd4, 0x99, 0x12, 0xcf, 0x3f, 0x6e,
 })
 
 // regTestGenesisMerkleRoot is the hash of the first transaction in the genesis
@@ -107,10 +106,11 @@ var regTestGenesisBlock = wire.MsgBlock{
 	Header: wire.BlockHeader{
 		Version:    1,
 		PrevBlock:  chainhash.Hash{},         // 0000000000000000000000000000000000000000000000000000000000000000
-		MerkleRoot: regTestGenesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
-		Timestamp:  time.Unix(1296688602, 0), // 2011-02-02 23:16:42 +0000 UTC
+		MerkleRoot: regTestGenesisMerkleRoot, // b8211c82c3d15bcd78bba57005b86fed515149a53a425eb592c07af99fe559cc
+		ClaimTrie:  genesisClaimTrie,         // 0000000000000000000000000000000000000000000000000000000000000001
+		Timestamp:  time.Unix(1446058291, 0), // 28 Oct 2015 18:51:31 +0000 UTC
 		Bits:       0x207fffff,               // 545259519 [7fffff0000000000000000000000000000000000000000000000000000000000]
-		Nonce:      2,
+		Nonce:      1,
 	},
 	Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
 }
@@ -135,10 +135,11 @@ var testNet3GenesisBlock = wire.MsgBlock{
 	Header: wire.BlockHeader{
 		Version:    1,
 		PrevBlock:  chainhash.Hash{},          // 0000000000000000000000000000000000000000000000000000000000000000
-		MerkleRoot: testNet3GenesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
-		Timestamp:  time.Unix(1296688602, 0),  // 2011-02-02 23:16:42 +0000 UTC
-		Bits:       0x1d00ffff,                // 486604799 [00000000ffff0000000000000000000000000000000000000000000000000000]
-		Nonce:      0x18aea41a,                // 414098458
+		MerkleRoot: testNet3GenesisMerkleRoot, // b8211c82c3d15bcd78bba57005b86fed515149a53a425eb592c07af99fe559cc
+		ClaimTrie:  genesisClaimTrie,          // 0000000000000000000000000000000000000000000000000000000000000001
+		Timestamp:  time.Unix(1446058291, 0),  // 28 Oct 2015 18:51:31 +0000 UTC
+		Bits:       0x1f00ffff,                // 486604799 [00000000ffff0000000000000000000000000000000000000000000000000000]
+		Nonce:      0x00000507,                // 1287
 	},
 	Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
 }

chaincfg/genesis_test.go

@@ -1,351 +0,0 @@
-// Copyright (c) 2014-2016 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package chaincfg
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/davecgh/go-spew/spew"
-)
-
-// TestGenesisBlock tests the genesis block of the main network for validity by
-// checking the encoded bytes and hashes.
-func TestGenesisBlock(t *testing.T) {
-	// Encode the genesis block to raw bytes.
-	var buf bytes.Buffer
-	err := MainNetParams.GenesisBlock.Serialize(&buf)
-	if err != nil {
-		t.Fatalf("TestGenesisBlock: %v", err)
-	}
-
-	// Ensure the encoded block matches the expected bytes.
-	if !bytes.Equal(buf.Bytes(), genesisBlockBytes) {
-		t.Fatalf("TestGenesisBlock: Genesis block does not appear valid - "+
-			"got %v, want %v", spew.Sdump(buf.Bytes()),
-			spew.Sdump(genesisBlockBytes))
-	}
-
-	// Check hash of the block against expected hash.
-	hash := MainNetParams.GenesisBlock.BlockHash()
-	if !MainNetParams.GenesisHash.IsEqual(&hash) {
-		t.Fatalf("TestGenesisBlock: Genesis block hash does not "+
-			"appear valid - got %v, want %v", spew.Sdump(hash),
-			spew.Sdump(MainNetParams.GenesisHash))
-	}
-}
-
-// TestRegTestGenesisBlock tests the genesis block of the regression test
-// network for validity by checking the encoded bytes and hashes.
-func TestRegTestGenesisBlock(t *testing.T) {
-	// Encode the genesis block to raw bytes.
-	var buf bytes.Buffer
-	err := RegressionNetParams.GenesisBlock.Serialize(&buf)
-	if err != nil {
-		t.Fatalf("TestRegTestGenesisBlock: %v", err)
-	}
-
-	// Ensure the encoded block matches the expected bytes.
-	if !bytes.Equal(buf.Bytes(), regTestGenesisBlockBytes) {
-		t.Fatalf("TestRegTestGenesisBlock: Genesis block does not "+
-			"appear valid - got %v, want %v",
-			spew.Sdump(buf.Bytes()),
-			spew.Sdump(regTestGenesisBlockBytes))
-	}
-
-	// Check hash of the block against expected hash.
-	hash := RegressionNetParams.GenesisBlock.BlockHash()
-	if !RegressionNetParams.GenesisHash.IsEqual(&hash) {
-		t.Fatalf("TestRegTestGenesisBlock: Genesis block hash does "+
-			"not appear valid - got %v, want %v", spew.Sdump(hash),
-			spew.Sdump(RegressionNetParams.GenesisHash))
-	}
-}
-
-// TestTestNet3GenesisBlock tests the genesis block of the test network (version
-// 3) for validity by checking the encoded bytes and hashes.
-func TestTestNet3GenesisBlock(t *testing.T) {
-	// Encode the genesis block to raw bytes.
-	var buf bytes.Buffer
-	err := TestNet3Params.GenesisBlock.Serialize(&buf)
-	if err != nil {
-		t.Fatalf("TestTestNet3GenesisBlock: %v", err)
-	}
-
-	// Ensure the encoded block matches the expected bytes.
-	if !bytes.Equal(buf.Bytes(), testNet3GenesisBlockBytes) {
-		t.Fatalf("TestTestNet3GenesisBlock: Genesis block does not "+
-			"appear valid - got %v, want %v",
-			spew.Sdump(buf.Bytes()),
-			spew.Sdump(testNet3GenesisBlockBytes))
-	}
-
-	// Check hash of the block against expected hash.
-	hash := TestNet3Params.GenesisBlock.BlockHash()
-	if !TestNet3Params.GenesisHash.IsEqual(&hash) {
-		t.Fatalf("TestTestNet3GenesisBlock: Genesis block hash does "+
-			"not appear valid - got %v, want %v", spew.Sdump(hash),
-			spew.Sdump(TestNet3Params.GenesisHash))
-	}
-}
-
-// TestSimNetGenesisBlock tests the genesis block of the simulation test network
-// for validity by checking the encoded bytes and hashes.
-func TestSimNetGenesisBlock(t *testing.T) {
-	// Encode the genesis block to raw bytes.
-	var buf bytes.Buffer
-	err := SimNetParams.GenesisBlock.Serialize(&buf)
-	if err != nil {
-		t.Fatalf("TestSimNetGenesisBlock: %v", err)
-	}
-
-	// Ensure the encoded block matches the expected bytes.
-	if !bytes.Equal(buf.Bytes(), simNetGenesisBlockBytes) {
-		t.Fatalf("TestSimNetGenesisBlock: Genesis block does not "+
-			"appear valid - got %v, want %v",
-			spew.Sdump(buf.Bytes()),
-			spew.Sdump(simNetGenesisBlockBytes))
-	}
-
-	// Check hash of the block against expected hash.
-	hash := SimNetParams.GenesisBlock.BlockHash()
-	if !SimNetParams.GenesisHash.IsEqual(&hash) {
-		t.Fatalf("TestSimNetGenesisBlock: Genesis block hash does "+
-			"not appear valid - got %v, want %v", spew.Sdump(hash),
-			spew.Sdump(SimNetParams.GenesisHash))
-	}
-}
-
-// TestSigNetGenesisBlock tests the genesis block of the signet test network for
-// validity by checking the encoded bytes and hashes.
-func TestSigNetGenesisBlock(t *testing.T) {
-	// Encode the genesis block to raw bytes.
-	var buf bytes.Buffer
-	err := SigNetParams.GenesisBlock.Serialize(&buf)
-	if err != nil {
-		t.Fatalf("TestSigNetGenesisBlock: %v", err)
-	}
-
-	// Ensure the encoded block matches the expected bytes.
-	if !bytes.Equal(buf.Bytes(), sigNetGenesisBlockBytes) {
-		t.Fatalf("TestSigNetGenesisBlock: Genesis block does not "+
-			"appear valid - got %v, want %v",
-			spew.Sdump(buf.Bytes()),
-			spew.Sdump(sigNetGenesisBlockBytes))
-	}
-
-	// Check hash of the block against expected hash.
-	hash := SigNetParams.GenesisBlock.BlockHash()
-	if !SigNetParams.GenesisHash.IsEqual(&hash) {
-		t.Fatalf("TestSigNetGenesisBlock: Genesis block hash does "+
-			"not appear valid - got %v, want %v", spew.Sdump(hash),
-			spew.Sdump(SigNetParams.GenesisHash))
-	}
-}
-
-// genesisBlockBytes are the wire encoded bytes for the genesis block of the
-// main network as of protocol version 60002.
-var genesisBlockBytes = []byte{
-	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x3b, 0xa3, 0xed, 0xfd, /* |....;...| */
-	0x7a, 0x7b, 0x12, 0xb2, 0x7a, 0xc7, 0x2c, 0x3e, /* |z{..z.,>| */
-	0x67, 0x76, 0x8f, 0x61, 0x7f, 0xc8, 0x1b, 0xc3, /* |gv.a....| */
-	0x88, 0x8a, 0x51, 0x32, 0x3a, 0x9f, 0xb8, 0xaa, /* |..Q2:...| */
-	0x4b, 0x1e, 0x5e, 0x4a, 0x29, 0xab, 0x5f, 0x49, /* |K.^J)._I| */
-	0xff, 0xff, 0x00, 0x1d, 0x1d, 0xac, 0x2b, 0x7c, /* |......+|| */
-	0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, /* |........| */
-	0xff, 0xff, 0x4d, 0x04, 0xff, 0xff, 0x00, 0x1d, /* |..M.....| */
-	0x01, 0x04, 0x45, 0x54, 0x68, 0x65, 0x20, 0x54, /* |..EThe T| */
-	0x69, 0x6d, 0x65, 0x73, 0x20, 0x30, 0x33, 0x2f, /* |imes 03/| */
-	0x4a, 0x61, 0x6e, 0x2f, 0x32, 0x30, 0x30, 0x39, /* |Jan/2009| */
-	0x20, 0x43, 0x68, 0x61, 0x6e, 0x63, 0x65, 0x6c, /* | Chancel| */
-	0x6c, 0x6f, 0x72, 0x20, 0x6f, 0x6e, 0x20, 0x62, /* |lor on b| */
-	0x72, 0x69, 0x6e, 0x6b, 0x20, 0x6f, 0x66, 0x20, /* |rink of | */
-	0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x62, /* |second b| */
-	0x61, 0x69, 0x6c, 0x6f, 0x75, 0x74, 0x20, 0x66, /* |ailout f| */
-	0x6f, 0x72, 0x20, 0x62, 0x61, 0x6e, 0x6b, 0x73, /* |or banks| */
-	0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0xf2, 0x05, /* |........| */
-	0x2a, 0x01, 0x00, 0x00, 0x00, 0x43, 0x41, 0x04, /* |*....CA.| */
-	0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, 0x48, 0x27, /* |g....UH'| */
-	0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, 0xb7, 0x10, /* |.g..q0..| */
-	0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, 0x09, 0xa6, /* |\..(.9..| */
-	0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, 0xde, 0xb6, /* |yb...a..| */
-	0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, 0x38, 0xc4, /* |I..?L.8.| */
-	0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, 0x12, 0xde, /* |.U......| */
-	0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, 0x8d, 0x57, /* |\8M....W| */
-	0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |.Lp+k.._|*/
-	0xac, 0x00, 0x00, 0x00, 0x00, /* |.....|    */
-}
-
-// regTestGenesisBlockBytes are the wire encoded bytes for the genesis block of
-// the regression test network as of protocol version 60002.
-var regTestGenesisBlockBytes = []byte{
-	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x3b, 0xa3, 0xed, 0xfd, /* |....;...| */
-	0x7a, 0x7b, 0x12, 0xb2, 0x7a, 0xc7, 0x2c, 0x3e, /* |z{..z.,>| */
-	0x67, 0x76, 0x8f, 0x61, 0x7f, 0xc8, 0x1b, 0xc3, /* |gv.a....| */
-	0x88, 0x8a, 0x51, 0x32, 0x3a, 0x9f, 0xb8, 0xaa, /* |..Q2:...| */
-	0x4b, 0x1e, 0x5e, 0x4a, 0xda, 0xe5, 0x49, 0x4d, /* |K.^J)._I| */
-	0xff, 0xff, 0x7f, 0x20, 0x02, 0x00, 0x00, 0x00, /* |......+|| */
-	0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, /* |........| */
-	0xff, 0xff, 0x4d, 0x04, 0xff, 0xff, 0x00, 0x1d, /* |..M.....| */
-	0x01, 0x04, 0x45, 0x54, 0x68, 0x65, 0x20, 0x54, /* |..EThe T| */
-	0x69, 0x6d, 0x65, 0x73, 0x20, 0x30, 0x33, 0x2f, /* |imes 03/| */
-	0x4a, 0x61, 0x6e, 0x2f, 0x32, 0x30, 0x30, 0x39, /* |Jan/2009| */
-	0x20, 0x43, 0x68, 0x61, 0x6e, 0x63, 0x65, 0x6c, /* | Chancel| */
-	0x6c, 0x6f, 0x72, 0x20, 0x6f, 0x6e, 0x20, 0x62, /* |lor on b| */
-	0x72, 0x69, 0x6e, 0x6b, 0x20, 0x6f, 0x66, 0x20, /* |rink of | */
-	0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x62, /* |second b| */
-	0x61, 0x69, 0x6c, 0x6f, 0x75, 0x74, 0x20, 0x66, /* |ailout f| */
-	0x6f, 0x72, 0x20, 0x62, 0x61, 0x6e, 0x6b, 0x73, /* |or banks| */
-	0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0xf2, 0x05, /* |........| */
-	0x2a, 0x01, 0x00, 0x00, 0x00, 0x43, 0x41, 0x04, /* |*....CA.| */
-	0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, 0x48, 0x27, /* |g....UH'| */
-	0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, 0xb7, 0x10, /* |.g..q0..| */
-	0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, 0x09, 0xa6, /* |\..(.9..| */
-	0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, 0xde, 0xb6, /* |yb...a..| */
-	0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, 0x38, 0xc4, /* |I..?L.8.| */
-	0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, 0x12, 0xde, /* |.U......| */
-	0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, 0x8d, 0x57, /* |\8M....W| */
-	0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |.Lp+k.._|*/
-	0xac, 0x00, 0x00, 0x00, 0x00, /* |.....|    */
-}
-
-// testNet3GenesisBlockBytes are the wire encoded bytes for the genesis block of
-// the test network (version 3) as of protocol version 60002.
-var testNet3GenesisBlockBytes = []byte{
-	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x3b, 0xa3, 0xed, 0xfd, /* |....;...| */
-	0x7a, 0x7b, 0x12, 0xb2, 0x7a, 0xc7, 0x2c, 0x3e, /* |z{..z.,>| */
-	0x67, 0x76, 0x8f, 0x61, 0x7f, 0xc8, 0x1b, 0xc3, /* |gv.a....| */
-	0x88, 0x8a, 0x51, 0x32, 0x3a, 0x9f, 0xb8, 0xaa, /* |..Q2:...| */
-	0x4b, 0x1e, 0x5e, 0x4a, 0xda, 0xe5, 0x49, 0x4d, /* |K.^J)._I| */
-	0xff, 0xff, 0x00, 0x1d, 0x1a, 0xa4, 0xae, 0x18, /* |......+|| */
-	0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, /* |........| */
-	0xff, 0xff, 0x4d, 0x04, 0xff, 0xff, 0x00, 0x1d, /* |..M.....| */
-	0x01, 0x04, 0x45, 0x54, 0x68, 0x65, 0x20, 0x54, /* |..EThe T| */
-	0x69, 0x6d, 0x65, 0x73, 0x20, 0x30, 0x33, 0x2f, /* |imes 03/| */
-	0x4a, 0x61, 0x6e, 0x2f, 0x32, 0x30, 0x30, 0x39, /* |Jan/2009| */
-	0x20, 0x43, 0x68, 0x61, 0x6e, 0x63, 0x65, 0x6c, /* | Chancel| */
-	0x6c, 0x6f, 0x72, 0x20, 0x6f, 0x6e, 0x20, 0x62, /* |lor on b| */
-	0x72, 0x69, 0x6e, 0x6b, 0x20, 0x6f, 0x66, 0x20, /* |rink of | */
-	0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x62, /* |second b| */
-	0x61, 0x69, 0x6c, 0x6f, 0x75, 0x74, 0x20, 0x66, /* |ailout f| */
-	0x6f, 0x72, 0x20, 0x62, 0x61, 0x6e, 0x6b, 0x73, /* |or banks| */
-	0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0xf2, 0x05, /* |........| */
-	0x2a, 0x01, 0x00, 0x00, 0x00, 0x43, 0x41, 0x04, /* |*....CA.| */
-	0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, 0x48, 0x27, /* |g....UH'| */
-	0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, 0xb7, 0x10, /* |.g..q0..| */
-	0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, 0x09, 0xa6, /* |\..(.9..| */
-	0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, 0xde, 0xb6, /* |yb...a..| */
-	0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, 0x38, 0xc4, /* |I..?L.8.| */
-	0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, 0x12, 0xde, /* |.U......| */
-	0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, 0x8d, 0x57, /* |\8M....W| */
-	0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |.Lp+k.._|*/
-	0xac, 0x00, 0x00, 0x00, 0x00, /* |.....|    */
-}
-
-// simNetGenesisBlockBytes are the wire encoded bytes for the genesis block of
-// the simulation test network as of protocol version 70002.
-var simNetGenesisBlockBytes = []byte{
-	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x3b, 0xa3, 0xed, 0xfd, /* |....;...| */
-	0x7a, 0x7b, 0x12, 0xb2, 0x7a, 0xc7, 0x2c, 0x3e, /* |z{..z.,>| */
-	0x67, 0x76, 0x8f, 0x61, 0x7f, 0xc8, 0x1b, 0xc3, /* |gv.a....| */
-	0x88, 0x8a, 0x51, 0x32, 0x3a, 0x9f, 0xb8, 0xaa, /* |..Q2:...| */
-	0x4b, 0x1e, 0x5e, 0x4a, 0x45, 0x06, 0x86, 0x53, /* |K.^J)._I| */
-	0xff, 0xff, 0x7f, 0x20, 0x02, 0x00, 0x00, 0x00, /* |......+|| */
-	0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, /* |........| */
-	0xff, 0xff, 0x4d, 0x04, 0xff, 0xff, 0x00, 0x1d, /* |..M.....| */
-	0x01, 0x04, 0x45, 0x54, 0x68, 0x65, 0x20, 0x54, /* |..EThe T| */
-	0x69, 0x6d, 0x65, 0x73, 0x20, 0x30, 0x33, 0x2f, /* |imes 03/| */
-	0x4a, 0x61, 0x6e, 0x2f, 0x32, 0x30, 0x30, 0x39, /* |Jan/2009| */
-	0x20, 0x43, 0x68, 0x61, 0x6e, 0x63, 0x65, 0x6c, /* | Chancel| */
-	0x6c, 0x6f, 0x72, 0x20, 0x6f, 0x6e, 0x20, 0x62, /* |lor on b| */
-	0x72, 0x69, 0x6e, 0x6b, 0x20, 0x6f, 0x66, 0x20, /* |rink of | */
-	0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x62, /* |second b| */
-	0x61, 0x69, 0x6c, 0x6f, 0x75, 0x74, 0x20, 0x66, /* |ailout f| */
-	0x6f, 0x72, 0x20, 0x62, 0x61, 0x6e, 0x6b, 0x73, /* |or banks| */
-	0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0xf2, 0x05, /* |........| */
-	0x2a, 0x01, 0x00, 0x00, 0x00, 0x43, 0x41, 0x04, /* |*....CA.| */
-	0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, 0x48, 0x27, /* |g....UH'| */
-	0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, 0xb7, 0x10, /* |.g..q0..| */
-	0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, 0x09, 0xa6, /* |\..(.9..| */
-	0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, 0xde, 0xb6, /* |yb...a..| */
-	0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, 0x38, 0xc4, /* |I..?L.8.| */
-	0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, 0x12, 0xde, /* |.U......| */
-	0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, 0x8d, 0x57, /* |\8M....W| */
-	0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |.Lp+k.._|*/
-	0xac, 0x00, 0x00, 0x00, 0x00, /* |.....|    */
-}
-
-// sigNetGenesisBlockBytes are the wire encoded bytes for the genesis block of
-// the signet test network as of protocol version 70002.
-var sigNetGenesisBlockBytes = []byte{
-	0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |...@....| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x3b, 0xa3, 0xed, 0xfd, /* |........| */
-	0x7a, 0x7b, 0x12, 0xb2, 0x7a, 0xc7, 0x2c, 0x3e, /* |....;...| */
-	0x67, 0x76, 0x8f, 0x61, 0x7f, 0xc8, 0x1b, 0xc3, /* |z{..z.,>| */
-	0x88, 0x8a, 0x51, 0x32, 0x3a, 0x9f, 0xb8, 0xaa, /* |gv.a....| */
-	0x4b, 0x1e, 0x5e, 0x4a, 0x00, 0x8f, 0x4d, 0x5f, /* |..Q2:...| */
-	0xae, 0x77, 0x03, 0x1e, 0x8a, 0xd2, 0x22, 0x03, /* |K.^J..M_| */
-	0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, /* |.w....".| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, /* |........| */
-	0xff, 0xff, 0x4d, 0x04, 0xff, 0xff, 0x00, 0x1d, /* |........| */
-	0x01, 0x04, 0x45, 0x54, 0x68, 0x65, 0x20, 0x54, /* |..M.....| */
-	0x69, 0x6d, 0x65, 0x73, 0x20, 0x30, 0x33, 0x2f, /* |..EThe T| */
-	0x4a, 0x61, 0x6e, 0x2f, 0x32, 0x30, 0x30, 0x39, /* |imes 03/| */
-	0x20, 0x43, 0x68, 0x61, 0x6e, 0x63, 0x65, 0x6c, /* |Jan/2009| */
-	0x6c, 0x6f, 0x72, 0x20, 0x6f, 0x6e, 0x20, 0x62, /* | Chancel| */
-	0x72, 0x69, 0x6e, 0x6b, 0x20, 0x6f, 0x66, 0x20, /* |lor on b| */
-	0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x62, /* |rink of| */
-	0x61, 0x69, 0x6c, 0x6f, 0x75, 0x74, 0x20, 0x66, /* |second b| */
-	0x6f, 0x72, 0x20, 0x62, 0x61, 0x6e, 0x6b, 0x73, /* |ailout f| */
-	0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0xf2, 0x05, /* |or banks| */
-	0x2a, 0x01, 0x00, 0x00, 0x00, 0x43, 0x41, 0x04, /* |........| */
-	0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, 0x48, 0x27, /* |*....CA.| */
-	0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, 0xb7, 0x10, /* |g....UH'| */
-	0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, 0x09, 0xa6, /* |.g..q0..| */
-	0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, 0xde, 0xb6, /* |\..(.9..| */
-	0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, 0x38, 0xc4, /* |yb...a..| */
-	0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, 0x12, 0xde, /* |I..?L.8.| */
-	0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, 0x8d, 0x57, /* |.U......| */
-	0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |\8M....W| */
-	0xac, 0x00, 0x00, 0x00, 0x00, /* |.....| */
-}

chaincfg/params.go

@@ -25,8 +25,8 @@ var (
 	bigOne = big.NewInt(1)
 
 	// mainPowLimit is the highest proof of work value a Bitcoin block can
-	// have for the main network.  It is the value 2^224 - 1.
-	mainPowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 224), bigOne)
+	// have for the main network.  It is the value 2^240 - 1.
+	mainPowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 240), bigOne)
 
 	// regressionPowLimit is the highest proof of work value a Bitcoin block
 	// can have for the regression test network.  It is the value 2^255 - 1.
@@ -34,8 +34,8 @@ var (
 
 	// testNet3PowLimit is the highest proof of work value a Bitcoin block
 	// can have for the test network (version 3).  It is the value
-	// 2^224 - 1.
-	testNet3PowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 224), bigOne)
+	// 2^240 - 1.
+	testNet3PowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 240), bigOne)
 
 	// simNetPowLimit is the highest proof of work value a Bitcoin block
 	// can have for the simulation test network.  It is the value 2^255 - 1.
@@ -102,6 +102,9 @@ type ConsensusDeployment struct {
 	// ExpireTime is the median block time after which the attempted
 	// deployment expires.
 	ExpireTime uint64
+
+	// ForceActiveAt is added by LBRY to bypass consensus. Features are activated via hard-fork instead.
+	ForceActiveAt int32
 }
 
 // Constants that define the deployment offset in the deployments field of the
@@ -237,11 +240,9 @@ type Params struct {
 	Bech32HRPSegwit string
 
 	// Address encoding magics
-	PubKeyHashAddrID        byte // First byte of a P2PKH address
-	ScriptHashAddrID        byte // First byte of a P2SH address
-	PrivateKeyID            byte // First byte of a WIF private key
-	WitnessPubKeyHashAddrID byte // First byte of a P2WPKH address
-	WitnessScriptHashAddrID byte // First byte of a P2WSH address
+	PubKeyHashAddrID byte // First byte of a P2PKH address
+	ScriptHashAddrID byte // First byte of a P2SH address
+	PrivateKeyID     byte // First byte of a WIF private key
 
 	// BIP32 hierarchical deterministic extended key magics
 	HDPrivateKeyID [4]byte
@@ -256,60 +257,58 @@ type Params struct {
 var MainNetParams = Params{
 	Name:        "mainnet",
 	Net:         wire.MainNet,
-	DefaultPort: "8333",
+	DefaultPort: "9246",
 	DNSSeeds: []DNSSeed{
-		{"seed.bitcoin.sipa.be", true},
-		{"dnsseed.bluematt.me", true},
-		{"dnsseed.bitcoin.dashjr.org", false},
-		{"seed.bitcoinstats.com", true},
-		{"seed.bitnodes.io", false},
-		{"seed.bitcoin.jonasschnelli.ch", true},
+		{"dnsseed1.lbry.com", true},
+		{"dnsseed2.lbry.com", true},
+		{"dnsseed3.lbry.com", true},
+		{"seed.lbry.grin.io", true},
+		{"seed.allaboutlbc.com", true},
 	},
 
 	// Chain parameters
 	GenesisBlock:             &genesisBlock,
 	GenesisHash:              &genesisHash,
 	PowLimit:                 mainPowLimit,
-	PowLimitBits:             0x1d00ffff,
-	BIP0034Height:            227931, // 000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8
-	BIP0065Height:            388381, // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
-	BIP0066Height:            363725, // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
+	PowLimitBits:             0x1f00ffff,
+	BIP0034Height:            1,
+	BIP0065Height:            200000,
+	BIP0066Height:            200000,
 	CoinbaseMaturity:         100,
-	SubsidyReductionInterval: 210000,
-	TargetTimespan:           time.Hour * 24 * 14, // 14 days
-	TargetTimePerBlock:       time.Minute * 10,    // 10 minutes
-	RetargetAdjustmentFactor: 4,                   // 25% less, 400% more
+	SubsidyReductionInterval: 1 << 5,
+	TargetTimespan:           time.Second * 150, // retarget every block
+	TargetTimePerBlock:       time.Second * 150, // 150 seconds
+	RetargetAdjustmentFactor: 4,                 // 25% less, 400% more
 	ReduceMinDifficulty:      false,
 	MinDiffReductionTime:     0,
 	GenerateSupported:        false,
 
 	// Checkpoints ordered from oldest to newest.
 	Checkpoints: []Checkpoint{
-		{11111, newHashFromStr("0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")},
-		{33333, newHashFromStr("000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")},
-		{74000, newHashFromStr("0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")},
-		{105000, newHashFromStr("00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")},
-		{134444, newHashFromStr("00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")},
-		{168000, newHashFromStr("000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763")},
-		{193000, newHashFromStr("000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317")},
-		{210000, newHashFromStr("000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e")},
-		{216116, newHashFromStr("00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e")},
-		{225430, newHashFromStr("00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932")},
-		{250000, newHashFromStr("000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214")},
-		{267300, newHashFromStr("000000000000000a83fbd660e918f218bf37edd92b748ad940483c7c116179ac")},
-		{279000, newHashFromStr("0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40")},
-		{300255, newHashFromStr("0000000000000000162804527c6e9b9f0563a280525f9d08c12041def0a0f3b2")},
-		{319400, newHashFromStr("000000000000000021c6052e9becade189495d1c539aa37c58917305fd15f13b")},
-		{343185, newHashFromStr("0000000000000000072b8bf361d01a6ba7d445dd024203fafc78768ed4368554")},
-		{352940, newHashFromStr("000000000000000010755df42dba556bb72be6a32f3ce0b6941ce4430152c9ff")},
-		{382320, newHashFromStr("00000000000000000a8dc6ed5b133d0eb2fd6af56203e4159789b092defd8ab2")},
-		{400000, newHashFromStr("000000000000000004ec466ce4732fe6f1ed1cddc2ed4b328fff5224276e3f6f")},
-		{430000, newHashFromStr("000000000000000001868b2bb3a285f3cc6b33ea234eb70facf4dcdf22186b87")},
-		{460000, newHashFromStr("000000000000000000ef751bbce8e744ad303c47ece06c8d863e4d417efc258c")},
-		{490000, newHashFromStr("000000000000000000de069137b17b8d5a3dfbd5b145b2dcfb203f15d0c4de90")},
-		{520000, newHashFromStr("0000000000000000000d26984c0229c9f6962dc74db0a6d525f2f1640396f69c")},
-		{550000, newHashFromStr("000000000000000000223b7a2298fb1c6c75fb0efc28a4c56853ff4112ec6bc9")},
-		{560000, newHashFromStr("0000000000000000002c7b276daf6efb2b6aa68e2ce3be67ef925b3264ae7122")},
+		{40000, newHashFromStr("4c55584b068108b15c0066a010d11971aa92f46b0a73d479f1b7fa57df8b05f4")},
+		{80000, newHashFromStr("6e9facdfb87ba8394a46c61a7c093f7f00b1397a2dabc6a04f2911e0efdcf50a")},
+		{120000, newHashFromStr("6a9dba420ec544b927769765dccec8b29e214e6ca9f82b54a52bf20ca517b75a")},
+		{160000, newHashFromStr("87b2913a509d857401f7587903c90214db7847af1a1ad63a3b6f245936e3ae9d")},
+		{200000, newHashFromStr("0fe8ed6019a83028006435e47be4e37a0d3ed48019cde1dc7ede6562e5829839")},
+		{240000, newHashFromStr("cb3c2342afbe7291012f2288403a9d105f46987f78b279d516db2deb4d35b0b7")},
+		{280000, newHashFromStr("9835d03eb527ea4ce45c217350c68042926d497c21fb31413b2f7824ff6fc6c3")},
+		{320000, newHashFromStr("ad80c7cb91ca1d9c9b7bf68ca1b6d4ba217fe25ca5ded6a7e8acbaba663b143f")},
+		{360000, newHashFromStr("f9fd013252439663c1e729a8afb27187a8b9cc63a253336060f867e3cfbe4dcb")},
+		{400000, newHashFromStr("f0e56e70782af63ccb49c76e852540688755869ba59ec68cac9c04a6b4d9f5ca")},
+		{440000, newHashFromStr("52760e00c369b40781a2ced32836711fab82a720fafb121118c815bb46afd996")},
+		{480000, newHashFromStr("cecacaf4d1a8d1ef60da39343540781115abb91f5f0c976bb08afc4d4e3218ac")},
+		{520000, newHashFromStr("fa5e9d6dcf9ad57ba60d8ba26fb05585741098d10f42ed9d5e6b5e90ebc278d6")},
+		{560000, newHashFromStr("95c6229bd9b40f03a8426b2fec740026b3f06b1628cfb87527b0cbd0da328c0c")},
+		{600000, newHashFromStr("532657a97d480feb2d0423bb736cbfd7400b3ac8311e81ac749a2f29103a6c6b")},
+		{640000, newHashFromStr("68b69e3e8765e1ddbac63cbfbbf12e1a920da994d242a26fd07624f067743080")},
+		{680000, newHashFromStr("7b9f30c959405b5b96d0b0c2ba8fc7c5586cd0ce40df51427de4b8a217859c45")},
+		{720000, newHashFromStr("42084d5f88c71c0ae09b8677070969df9c3ef875c5f434133f552d863204f0cb")},
+		{760000, newHashFromStr("1887cd8b50375a9ac0dc9686c98fa8ac69bca618eab6254310647057f6fe4fc9")},
+		{800000, newHashFromStr("d34bb871b21e6fda4bd9d9e530ebf12e044814004007f088415035c651ecf322")},
+		{840000, newHashFromStr("d0e73c5ce3ad5d6fdb4483aa450f0b1cf7e4570987ee3a3806ace4ad2f7cc9af")},
+		{880000, newHashFromStr("806a95f26bab603f1d9132b5d4ea72aab9d1198ad55ae18dac1e149f6cb70ce4")},
+		{920000, newHashFromStr("83bc84555105436c51728ab200e8da4d9b3a365fd3d1d47a60048ad0f977c55b")},
+		{960000, newHashFromStr("60e37b1c2d1f8771290b7f84865cbadf22b5b89d3ce1201d454b09f0775b42c2")},
 	},
 
 	// Consensus rule change deployments.
@@ -325,14 +324,16 @@ var MainNetParams = Params{
 			ExpireTime: 1230767999, // December 31, 2008 UTC
 		},
 		DeploymentCSV: {
-			BitNumber:  0,
-			StartTime:  1462060800, // May 1st, 2016
-			ExpireTime: 1493596800, // May 1st, 2017
+			BitNumber:     0,
+			StartTime:     1462060800, // May 1st, 2016
+			ExpireTime:    1493596800, // May 1st, 2017
+			ForceActiveAt: 200000,
 		},
 		DeploymentSegwit: {
-			BitNumber:  1,
-			StartTime:  1479168000, // November 15, 2016 UTC
-			ExpireTime: 1510704000, // November 15, 2017 UTC.
+			BitNumber:     1,
+			StartTime:     1547942400, // Jan 20, 2019
+			ExpireTime:    1548288000, // Jan 24, 2019
+			ForceActiveAt: 680770,
 		},
 	},
 
@@ -341,18 +342,16 @@ var MainNetParams = Params{
 
 	// Human-readable part for Bech32 encoded segwit addresses, as defined in
 	// BIP 173.
-	Bech32HRPSegwit: "bc", // always bc for main net
+	Bech32HRPSegwit: "lbc",
 
 	// Address encoding magics
-	PubKeyHashAddrID:        0x00, // starts with 1
-	ScriptHashAddrID:        0x05, // starts with 3
-	PrivateKeyID:            0x80, // starts with 5 (uncompressed) or K (compressed)
-	WitnessPubKeyHashAddrID: 0x06, // starts with p2
-	WitnessScriptHashAddrID: 0x0A, // starts with 7Xh
+	PubKeyHashAddrID: 0x55,
+	ScriptHashAddrID: 0x7a,
+	PrivateKeyID:     0x1c,
 
 	// BIP32 hierarchical deterministic extended key magics
-	HDPrivateKeyID: [4]byte{0x04, 0x88, 0xad, 0xe4}, // starts with xprv
-	HDPublicKeyID:  [4]byte{0x04, 0x88, 0xb2, 0x1e}, // starts with xpub
+	HDPrivateKeyID: [4]byte{0x04, 0x88, 0xad, 0xe4},
+	HDPublicKeyID:  [4]byte{0x04, 0x88, 0xb2, 0x1e},
 
 	// BIP44 coin type used in the hierarchical deterministic path for
 	// address generation.
@@ -365,7 +364,7 @@ var MainNetParams = Params{
 var RegressionNetParams = Params{
 	Name:        "regtest",
 	Net:         wire.TestNet,
-	DefaultPort: "18444",
+	DefaultPort: "29246",
 	DNSSeeds:    []DNSSeed{},
 
 	// Chain parameters
@@ -374,15 +373,15 @@ var RegressionNetParams = Params{
 	PowLimit:                 regressionPowLimit,
 	PowLimitBits:             0x207fffff,
 	CoinbaseMaturity:         100,
-	BIP0034Height:            100000000, // Not active - Permit ver 1 blocks
-	BIP0065Height:            1351,      // Used by regression tests
-	BIP0066Height:            1251,      // Used by regression tests
-	SubsidyReductionInterval: 150,
-	TargetTimespan:           time.Hour * 24 * 14, // 14 days
-	TargetTimePerBlock:       time.Minute * 10,    // 10 minutes
-	RetargetAdjustmentFactor: 4,                   // 25% less, 400% more
-	ReduceMinDifficulty:      true,
-	MinDiffReductionTime:     time.Minute * 20, // TargetTimePerBlock * 2
+	BIP0034Height:            1000,
+	BIP0065Height:            1351, // Used by regression tests
+	BIP0066Height:            1251, // Used by regression tests
+	SubsidyReductionInterval: 1 << 5,
+	TargetTimespan:           time.Second,
+	TargetTimePerBlock:       time.Second,
+	RetargetAdjustmentFactor: 4, // 25% less, 400% more
+	ReduceMinDifficulty:      false,
+	MinDiffReductionTime:     0,
 	GenerateSupported:        true,
 
 	// Checkpoints ordered from oldest to newest.
@@ -401,14 +400,16 @@ var RegressionNetParams = Params{
 			ExpireTime: math.MaxInt64, // Never expires
 		},
 		DeploymentCSV: {
-			BitNumber:  0,
-			StartTime:  0,             // Always available for vote
-			ExpireTime: math.MaxInt64, // Never expires
+			BitNumber:     0,
+			StartTime:     0,             // Always available for vote
+			ExpireTime:    math.MaxInt64, // Never expires
+			ForceActiveAt: 1,
 		},
 		DeploymentSegwit: {
-			BitNumber:  1,
-			StartTime:  0,             // Always available for vote
-			ExpireTime: math.MaxInt64, // Never expires.
+			BitNumber:     1,
+			StartTime:     0,
+			ExpireTime:    math.MaxInt64,
+			ForceActiveAt: 150,
 		},
 	},
 
@@ -417,12 +418,12 @@ var RegressionNetParams = Params{
 
 	// Human-readable part for Bech32 encoded segwit addresses, as defined in
 	// BIP 173.
-	Bech32HRPSegwit: "bcrt", // always bcrt for reg test net
+	Bech32HRPSegwit: "rlbc",
 
 	// Address encoding magics
-	PubKeyHashAddrID: 0x6f, // starts with m or n
-	ScriptHashAddrID: 0xc4, // starts with 2
-	PrivateKeyID:     0xef, // starts with 9 (uncompressed) or c (compressed)
+	PubKeyHashAddrID: 111, // starts with m or n
+	ScriptHashAddrID: 196, // starts with 2
+	PrivateKeyID:     239, // starts with 9 (uncompressed) or c (compressed)
 
 	// BIP32 hierarchical deterministic extended key magics
 	HDPrivateKeyID: [4]byte{0x04, 0x35, 0x83, 0x94}, // starts with tprv
@@ -439,48 +440,31 @@ var RegressionNetParams = Params{
 var TestNet3Params = Params{
 	Name:        "testnet3",
 	Net:         wire.TestNet3,
-	DefaultPort: "18333",
+	DefaultPort: "19246",
 	DNSSeeds: []DNSSeed{
-		{"testnet-seed.bitcoin.jonasschnelli.ch", true},
-		{"testnet-seed.bitcoin.schildbach.de", false},
-		{"seed.tbtc.petertodd.org", true},
-		{"testnet-seed.bluematt.me", false},
+		{"testdnsseed1.lbry.com", true},
+		{"testdnsseed2.lbry.com", true},
 	},
 
 	// Chain parameters
 	GenesisBlock:             &testNet3GenesisBlock,
 	GenesisHash:              &testNet3GenesisHash,
 	PowLimit:                 testNet3PowLimit,
-	PowLimitBits:             0x1d00ffff,
-	BIP0034Height:            21111,  // 0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8
-	BIP0065Height:            581885, // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
-	BIP0066Height:            330776, // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
+	PowLimitBits:             0x1f00ffff,
+	BIP0034Height:            21111, // 0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8
+	BIP0065Height:            1200000,
+	BIP0066Height:            1200000,
 	CoinbaseMaturity:         100,
-	SubsidyReductionInterval: 210000,
-	TargetTimespan:           time.Hour * 24 * 14, // 14 days
-	TargetTimePerBlock:       time.Minute * 10,    // 10 minutes
-	RetargetAdjustmentFactor: 4,                   // 25% less, 400% more
-	ReduceMinDifficulty:      true,
-	MinDiffReductionTime:     time.Minute * 20, // TargetTimePerBlock * 2
-	GenerateSupported:        false,
+	SubsidyReductionInterval: 1 << 5,
+	TargetTimespan:           time.Second * 150, // retarget every block
+	TargetTimePerBlock:       time.Second * 150, // 150 seconds
+	RetargetAdjustmentFactor: 4,                 // 25% less, 400% more
+	ReduceMinDifficulty:      false,
+	MinDiffReductionTime:     0,
+	GenerateSupported:        true,
 
 	// Checkpoints ordered from oldest to newest.
-	Checkpoints: []Checkpoint{
-		{546, newHashFromStr("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
-		{100000, newHashFromStr("00000000009e2958c15ff9290d571bf9459e93b19765c6801ddeccadbb160a1e")},
-		{200000, newHashFromStr("0000000000287bffd321963ef05feab753ebe274e1d78b2fd4e2bfe9ad3aa6f2")},
-		{300001, newHashFromStr("0000000000004829474748f3d1bc8fcf893c88be255e6d7f571c548aff57abf4")},
-		{400002, newHashFromStr("0000000005e2c73b8ecb82ae2dbc2e8274614ebad7172b53528aba7501f5a089")},
-		{500011, newHashFromStr("00000000000929f63977fbac92ff570a9bd9e7715401ee96f2848f7b07750b02")},
-		{600002, newHashFromStr("000000000001f471389afd6ee94dcace5ccc44adc18e8bff402443f034b07240")},
-		{700000, newHashFromStr("000000000000406178b12a4dea3b27e13b3c4fe4510994fd667d7c1e6a3f4dc1")},
-		{800010, newHashFromStr("000000000017ed35296433190b6829db01e657d80631d43f5983fa403bfdb4c1")},
-		{900000, newHashFromStr("0000000000356f8d8924556e765b7a94aaebc6b5c8685dcfa2b1ee8b41acd89b")},
-		{1000007, newHashFromStr("00000000001ccb893d8a1f25b70ad173ce955e5f50124261bbbc50379a612ddf")},
-		{1100007, newHashFromStr("00000000000abc7b2cd18768ab3dee20857326a818d1946ed6796f42d66dd1e8")},
-		{1200007, newHashFromStr("00000000000004f2dc41845771909db57e04191714ed8c963f7e56713a7b6cea")},
-		{1300007, newHashFromStr("0000000072eab69d54df75107c052b26b0395b44f77578184293bf1bb1dbd9fa")},
-	},
+	Checkpoints: []Checkpoint{},
 
 	// Consensus rule change deployments.
 	//
@@ -500,9 +484,10 @@ var TestNet3Params = Params{
 			ExpireTime: 1493596800, // May 1st, 2017
 		},
 		DeploymentSegwit: {
-			BitNumber:  1,
-			StartTime:  1462060800, // May 1, 2016 UTC
-			ExpireTime: 1493596800, // May 1, 2017 UTC.
+			BitNumber:     1,
+			StartTime:     1462060800, // May 1st 2016
+			ExpireTime:    1493596800, // May 1st 2017
+			ForceActiveAt: 1198600,
 		},
 	},
 
@@ -511,14 +496,12 @@ var TestNet3Params = Params{
 
 	// Human-readable part for Bech32 encoded segwit addresses, as defined in
 	// BIP 173.
-	Bech32HRPSegwit: "tb", // always tb for test net
+	Bech32HRPSegwit: "tlbc",
 
 	// Address encoding magics
-	PubKeyHashAddrID:        0x6f, // starts with m or n
-	ScriptHashAddrID:        0xc4, // starts with 2
-	WitnessPubKeyHashAddrID: 0x03, // starts with QW
-	WitnessScriptHashAddrID: 0x28, // starts with T7n
-	PrivateKeyID:            0xef, // starts with 9 (uncompressed) or c (compressed)
+	PubKeyHashAddrID: 111,
+	ScriptHashAddrID: 196,
+	PrivateKeyID:     239,
 
 	// BIP32 hierarchical deterministic extended key magics
 	HDPrivateKeyID: [4]byte{0x04, 0x35, 0x83, 0x94}, // starts with tprv
@@ -552,11 +535,11 @@ var SimNetParams = Params{
 	BIP0066Height:            0, // Always active on simnet
 	CoinbaseMaturity:         100,
 	SubsidyReductionInterval: 210000,
-	TargetTimespan:           time.Hour * 24 * 14, // 14 days
-	TargetTimePerBlock:       time.Minute * 10,    // 10 minutes
-	RetargetAdjustmentFactor: 4,                   // 25% less, 400% more
+	TargetTimespan:           time.Second * 150,
+	TargetTimePerBlock:       time.Second * 150,
+	RetargetAdjustmentFactor: 4, // 25% less, 400% more
 	ReduceMinDifficulty:      true,
-	MinDiffReductionTime:     time.Minute * 20, // TargetTimePerBlock * 2
+	MinDiffReductionTime:     0,
 	GenerateSupported:        true,
 
 	// Checkpoints ordered from oldest to newest.
@@ -581,8 +564,8 @@ var SimNetParams = Params{
 		},
 		DeploymentSegwit: {
 			BitNumber:  1,
-			StartTime:  0,             // Always available for vote
-			ExpireTime: math.MaxInt64, // Never expires.
+			StartTime:  0,
+			ExpireTime: math.MaxInt64,
 		},
 	},
 
@@ -591,14 +574,12 @@ var SimNetParams = Params{
 
 	// Human-readable part for Bech32 encoded segwit addresses, as defined in
 	// BIP 173.
-	Bech32HRPSegwit: "sb", // always sb for sim net
+	Bech32HRPSegwit: "slbc",
 
 	// Address encoding magics
-	PubKeyHashAddrID:        0x3f, // starts with S
-	ScriptHashAddrID:        0x7b, // starts with s
-	PrivateKeyID:            0x64, // starts with 4 (uncompressed) or F (compressed)
-	WitnessPubKeyHashAddrID: 0x19, // starts with Gg
-	WitnessScriptHashAddrID: 0x28, // starts with ?
+	PubKeyHashAddrID: 111,
+	ScriptHashAddrID: 196,
+	PrivateKeyID:     239,
 
 	// BIP32 hierarchical deterministic extended key magics
 	HDPrivateKeyID: [4]byte{0x04, 0x20, 0xb9, 0x00}, // starts with sprv
@@ -691,14 +672,12 @@ func CustomSignetParams(challenge []byte, dnsSeeds []DNSSeed) Params {
 
 		// Human-readable part for Bech32 encoded segwit addresses, as defined in
 		// BIP 173.
-		Bech32HRPSegwit: "tb", // always tb for test net
+		Bech32HRPSegwit: "slbc",
 
 		// Address encoding magics
-		PubKeyHashAddrID:        0x6f, // starts with m or n
-		ScriptHashAddrID:        0xc4, // starts with 2
-		WitnessPubKeyHashAddrID: 0x03, // starts with QW
-		WitnessScriptHashAddrID: 0x28, // starts with T7n
-		PrivateKeyID:            0xef, // starts with 9 (uncompressed) or c (compressed)
+		PubKeyHashAddrID: 0x6f, // starts with m or n
+		ScriptHashAddrID: 0xc4, // starts with 2
+		PrivateKeyID:     0xef, // starts with 9 (uncompressed) or c (compressed)
 
 		// BIP32 hierarchical deterministic extended key magics
 		HDPrivateKeyID: [4]byte{0x04, 0x35, 0x83, 0x94}, // starts with tprv

claimtrie/block/blockrepo/pebble.go

@@ -0,0 +1,76 @@
+package blockrepo
+
+import (
+	"encoding/binary"
+	"github.com/pkg/errors"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+
+	"github.com/cockroachdb/pebble"
+)
+
+type Pebble struct {
+	db *pebble.DB
+}
+
+func NewPebble(path string) (*Pebble, error) {
+
+	db, err := pebble.Open(path, nil)
+	repo := &Pebble{db: db}
+
+	return repo, errors.Wrapf(err, "unable to open %s", path)
+}
+
+func (repo *Pebble) Load() (int32, error) {
+
+	iter := repo.db.NewIter(nil)
+	if !iter.Last() {
+		err := iter.Close()
+		return 0, errors.Wrap(err, "closing iterator with no last")
+	}
+
+	height := int32(binary.BigEndian.Uint32(iter.Key()))
+	err := iter.Close()
+	return height, errors.Wrap(err, "closing iterator")
+}
+
+func (repo *Pebble) Get(height int32) (*chainhash.Hash, error) {
+
+	key := make([]byte, 4)
+	binary.BigEndian.PutUint32(key, uint32(height))
+
+	b, closer, err := repo.db.Get(key)
+	if closer != nil {
+		defer closer.Close()
+	}
+	if err != nil {
+		return nil, errors.Wrap(err, "in get")
+	}
+	hash, err := chainhash.NewHash(b)
+	return hash, errors.Wrap(err, "creating hash")
+}
+
+func (repo *Pebble) Set(height int32, hash *chainhash.Hash) error {
+
+	key := make([]byte, 4)
+	binary.BigEndian.PutUint32(key, uint32(height))
+
+	return errors.WithStack(repo.db.Set(key, hash[:], pebble.NoSync))
+}
+
+func (repo *Pebble) Close() error {
+
+	err := repo.db.Flush()
+	if err != nil {
+		// if we fail to close are we going to try again later?
+		return errors.Wrap(err, "on flush")
+	}
+
+	err = repo.db.Close()
+	return errors.Wrap(err, "on close")
+}
+
+func (repo *Pebble) Flush() error {
+	_, err := repo.db.AsyncFlush()
+	return err
+}

claimtrie/block/repo.go

@@ -0,0 +1,14 @@
+package block
+
+import (
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+)
+
+// Repo defines APIs for Block to access persistence layer.
+type Repo interface {
+	Load() (int32, error)
+	Set(height int32, hash *chainhash.Hash) error
+	Get(height int32) (*chainhash.Hash, error)
+	Close() error
+	Flush() error
+}

claimtrie/chain/chainrepo/pebble.go

@@ -0,0 +1,77 @@
+package chainrepo
+
+import (
+	"encoding/binary"
+
+	"github.com/pkg/errors"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/vmihailenco/msgpack/v5"
+
+	"github.com/cockroachdb/pebble"
+)
+
+type Pebble struct {
+	db *pebble.DB
+}
+
+func NewPebble(path string) (*Pebble, error) {
+
+	db, err := pebble.Open(path, &pebble.Options{BytesPerSync: 64 << 20})
+	repo := &Pebble{db: db}
+
+	return repo, errors.Wrapf(err, "open %s", path)
+}
+
+func (repo *Pebble) Save(height int32, changes []change.Change) error {
+
+	if len(changes) == 0 {
+		return nil
+	}
+
+	var key [4]byte
+	binary.BigEndian.PutUint32(key[:], uint32(height))
+
+	value, err := msgpack.Marshal(changes)
+	if err != nil {
+		return errors.Wrap(err, "in marshaller")
+	}
+
+	err = repo.db.Set(key[:], value, pebble.NoSync)
+	return errors.Wrap(err, "in set")
+}
+
+func (repo *Pebble) Load(height int32) ([]change.Change, error) {
+
+	var key [4]byte
+	binary.BigEndian.PutUint32(key[:], uint32(height))
+
+	b, closer, err := repo.db.Get(key[:])
+	if closer != nil {
+		defer closer.Close()
+	}
+	if err != nil {
+		return nil, errors.Wrap(err, "in get")
+	}
+
+	var changes []change.Change
+	err = msgpack.Unmarshal(b, &changes)
+	return changes, errors.Wrap(err, "in unmarshaller")
+}
+
+func (repo *Pebble) Close() error {
+
+	err := repo.db.Flush()
+	if err != nil {
+		// if we fail to close are we going to try again later?
+		return errors.Wrap(err, "on flush")
+	}
+
+	err = repo.db.Close()
+	return errors.Wrap(err, "on close")
+}
+
+func (repo *Pebble) Flush() error {
+	_, err := repo.db.AsyncFlush()
+	return err
+}

claimtrie/chain/repo.go

@@ -0,0 +1,10 @@
+package chain
+
+import "github.com/btcsuite/btcd/claimtrie/change"
+
+type Repo interface {
+	Save(height int32, changes []change.Change) error
+	Load(height int32) ([]change.Change, error)
+	Close() error
+	Flush() error
+}

claimtrie/change/change.go

@@ -0,0 +1,112 @@
+package change
+
+import (
+	"bytes"
+	"encoding/binary"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/wire"
+)
+
+type ChangeType uint32
+
+const (
+	AddClaim ChangeType = iota
+	SpendClaim
+	UpdateClaim
+	AddSupport
+	SpendSupport
+)
+
+type Change struct {
+	Type   ChangeType
+	Height int32
+
+	Name     []byte `msg:"-"`
+	ClaimID  ClaimID
+	OutPoint wire.OutPoint
+	Amount   int64
+
+	ActiveHeight  int32 // for normalization fork
+	VisibleHeight int32
+
+	SpentChildren map[string]bool
+}
+
+func NewChange(typ ChangeType) Change {
+	return Change{Type: typ}
+}
+
+func (c Change) SetHeight(height int32) Change {
+	c.Height = height
+	return c
+}
+
+func (c Change) SetName(name []byte) Change {
+	c.Name = name // need to clone it?
+	return c
+}
+
+func (c Change) SetOutPoint(op *wire.OutPoint) Change {
+	c.OutPoint = *op
+	return c
+}
+
+func (c Change) SetAmount(amt int64) Change {
+	c.Amount = amt
+	return c
+}
+
+func (c *Change) MarshalTo(enc *bytes.Buffer) error {
+	enc.Write(c.ClaimID[:])
+	enc.Write(c.OutPoint.Hash[:])
+	var temp [8]byte
+	binary.BigEndian.PutUint32(temp[:4], c.OutPoint.Index)
+	enc.Write(temp[:4])
+	binary.BigEndian.PutUint32(temp[:4], uint32(c.Type))
+	enc.Write(temp[:4])
+	binary.BigEndian.PutUint32(temp[:4], uint32(c.Height))
+	enc.Write(temp[:4])
+	binary.BigEndian.PutUint32(temp[:4], uint32(c.ActiveHeight))
+	enc.Write(temp[:4])
+	binary.BigEndian.PutUint32(temp[:4], uint32(c.VisibleHeight))
+	enc.Write(temp[:4])
+	binary.BigEndian.PutUint64(temp[:], uint64(c.Amount))
+	enc.Write(temp[:])
+
+	if c.SpentChildren != nil {
+		binary.BigEndian.PutUint32(temp[:4], uint32(len(c.SpentChildren)))
+		enc.Write(temp[:4])
+		for key := range c.SpentChildren {
+			binary.BigEndian.PutUint16(temp[:2], uint16(len(key))) // technically limited to 255; not sure we trust it
+			enc.Write(temp[:2])
+			enc.WriteString(key)
+		}
+	} else {
+		binary.BigEndian.PutUint32(temp[:4], 0)
+		enc.Write(temp[:4])
+	}
+	return nil
+}
+
+func (c *Change) UnmarshalFrom(dec *bytes.Buffer) error {
+	copy(c.ClaimID[:], dec.Next(ClaimIDSize))
+	copy(c.OutPoint.Hash[:], dec.Next(chainhash.HashSize))
+	c.OutPoint.Index = binary.BigEndian.Uint32(dec.Next(4))
+	c.Type = ChangeType(binary.BigEndian.Uint32(dec.Next(4)))
+	c.Height = int32(binary.BigEndian.Uint32(dec.Next(4)))
+	c.ActiveHeight = int32(binary.BigEndian.Uint32(dec.Next(4)))
+	c.VisibleHeight = int32(binary.BigEndian.Uint32(dec.Next(4)))
+	c.Amount = int64(binary.BigEndian.Uint64(dec.Next(8)))
+	keys := binary.BigEndian.Uint32(dec.Next(4))
+	if keys > 0 {
+		c.SpentChildren = map[string]bool{}
+	}
+	for keys > 0 {
+		keys--
+		keySize := int(binary.BigEndian.Uint16(dec.Next(2)))
+		key := string(dec.Next(keySize))
+		c.SpentChildren[key] = true
+	}
+	return nil
+}

claimtrie/change/claimid.go

@@ -0,0 +1,53 @@
+package change
+
+import (
+	"encoding/binary"
+	"encoding/hex"
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btcutil"
+)
+
+// ClaimID represents a Claim's ClaimID.
+const ClaimIDSize = 20
+
+type ClaimID [ClaimIDSize]byte
+
+// NewClaimID returns a Claim ID calculated from Ripemd160(Sha256(OUTPOINT).
+func NewClaimID(op wire.OutPoint) (id ClaimID) {
+
+	var buffer [chainhash.HashSize + 4]byte // hoping for stack alloc
+	copy(buffer[:], op.Hash[:])
+	binary.BigEndian.PutUint32(buffer[chainhash.HashSize:], op.Index)
+	copy(id[:], btcutil.Hash160(buffer[:]))
+	return id
+}
+
+// NewIDFromString returns a Claim ID from a string.
+func NewIDFromString(s string) (id ClaimID, err error) {
+
+	if len(s) == 40 {
+		_, err = hex.Decode(id[:], []byte(s))
+	} else {
+		copy(id[:], s)
+	}
+	for i, j := 0, len(id)-1; i < j; i, j = i+1, j-1 {
+		id[i], id[j] = id[j], id[i]
+	}
+	return id, err
+}
+
+// Key is for in-memory maps
+func (id ClaimID) Key() string {
+	return string(id[:])
+}
+
+// String is for anything written to a DB
+func (id ClaimID) String() string {
+
+	for i, j := 0, len(id)-1; i < j; i, j = i+1, j-1 {
+		id[i], id[j] = id[j], id[i]
+	}
+
+	return hex.EncodeToString(id[:])
+}

claimtrie/claimtrie.go

@@ -0,0 +1,399 @@
+package claimtrie
+
+import (
+	"bytes"
+	"fmt"
+	"path/filepath"
+	"sort"
+
+	"github.com/pkg/errors"
+
+	"github.com/btcsuite/btcd/claimtrie/block"
+	"github.com/btcsuite/btcd/claimtrie/block/blockrepo"
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/config"
+	"github.com/btcsuite/btcd/claimtrie/merkletrie"
+	"github.com/btcsuite/btcd/claimtrie/merkletrie/merkletrierepo"
+	"github.com/btcsuite/btcd/claimtrie/node"
+	"github.com/btcsuite/btcd/claimtrie/node/noderepo"
+	"github.com/btcsuite/btcd/claimtrie/param"
+	"github.com/btcsuite/btcd/claimtrie/temporal"
+	"github.com/btcsuite/btcd/claimtrie/temporal/temporalrepo"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/wire"
+)
+
+// ClaimTrie implements a Merkle Trie supporting linear history of commits.
+type ClaimTrie struct {
+
+	// Repository for calculated block hashes.
+	blockRepo block.Repo
+
+	// Repository for storing temporal information of nodes at each block height.
+	// For example, which nodes (by name) should be refreshed at each block height
+	// due to stake expiration or delayed activation.
+	temporalRepo temporal.Repo
+
+	// Cache layer of Nodes.
+	nodeManager node.Manager
+
+	// Prefix tree (trie) that manages merkle hash of each node.
+	merkleTrie merkletrie.MerkleTrie
+
+	// Current block height, which is increased by one when AppendBlock() is called.
+	height int32
+
+	// Registrered cleanup functions which are invoked in the Close() in reverse order.
+	cleanups []func() error
+}
+
+func New(cfg config.Config) (*ClaimTrie, error) {
+
+	var cleanups []func() error
+
+	// The passed in cfg.DataDir has been prepended with netname.
+	dataDir := filepath.Join(cfg.DataDir, "claim_dbs")
+
+	dbPath := filepath.Join(dataDir, cfg.BlockRepoPebble.Path)
+	blockRepo, err := blockrepo.NewPebble(dbPath)
+	if err != nil {
+		return nil, errors.Wrap(err, "creating block repo")
+	}
+	cleanups = append(cleanups, blockRepo.Close)
+
+	dbPath = filepath.Join(dataDir, cfg.TemporalRepoPebble.Path)
+	temporalRepo, err := temporalrepo.NewPebble(dbPath)
+	if err != nil {
+		return nil, errors.Wrap(err, "creating temporal repo")
+	}
+	cleanups = append(cleanups, temporalRepo.Close)
+
+	// Initialize repository for changes to nodes.
+	// The cleanup is delegated to the Node Manager.
+	dbPath = filepath.Join(dataDir, cfg.NodeRepoPebble.Path)
+	nodeRepo, err := noderepo.NewPebble(dbPath)
+	if err != nil {
+		return nil, errors.Wrap(err, "creating node repo")
+	}
+
+	baseManager, err := node.NewBaseManager(nodeRepo)
+	if err != nil {
+		return nil, errors.Wrap(err, "creating node base manager")
+	}
+	nodeManager := node.NewNormalizingManager(baseManager)
+	cleanups = append(cleanups, nodeManager.Close)
+
+	var trie merkletrie.MerkleTrie
+	if cfg.RamTrie {
+		trie = merkletrie.NewRamTrie(nodeManager)
+	} else {
+
+		// Initialize repository for MerkleTrie. The cleanup is delegated to MerkleTrie.
+		dbPath = filepath.Join(dataDir, cfg.MerkleTrieRepoPebble.Path)
+		trieRepo, err := merkletrierepo.NewPebble(dbPath)
+		if err != nil {
+			return nil, errors.Wrap(err, "creating trie repo")
+		}
+
+		persistentTrie := merkletrie.NewPersistentTrie(nodeManager, trieRepo)
+		cleanups = append(cleanups, persistentTrie.Close)
+		trie = persistentTrie
+	}
+
+	// Restore the last height.
+	previousHeight, err := blockRepo.Load()
+	if err != nil {
+		return nil, errors.Wrap(err, "load block tip")
+	}
+
+	ct := &ClaimTrie{
+		blockRepo:    blockRepo,
+		temporalRepo: temporalRepo,
+
+		nodeManager: nodeManager,
+		merkleTrie:  trie,
+
+		height: previousHeight,
+	}
+
+	ct.cleanups = cleanups
+
+	if previousHeight > 0 {
+		hash, err := blockRepo.Get(previousHeight)
+		if err != nil {
+			ct.Close() // TODO: the cleanups aren't run when we exit with an err above here (but should be)
+			return nil, errors.Wrap(err, "block repo get")
+		}
+		_, err = nodeManager.IncrementHeightTo(previousHeight)
+		if err != nil {
+			ct.Close()
+			return nil, errors.Wrap(err, "increment height to")
+		}
+		// TODO: pass in the interrupt signal here:
+		trie.SetRoot(hash, nil) // keep this after IncrementHeightTo
+
+		if !ct.MerkleHash().IsEqual(hash) {
+			ct.Close()
+			return nil, errors.Errorf("unable to restore the claim hash to %s at height %d", hash.String(), previousHeight)
+		}
+	}
+
+	return ct, nil
+}
+
+// AddClaim adds a Claim to the ClaimTrie.
+func (ct *ClaimTrie) AddClaim(name []byte, op wire.OutPoint, id change.ClaimID, amt int64) error {
+
+	chg := change.Change{
+		Type:     change.AddClaim,
+		Name:     name,
+		OutPoint: op,
+		Amount:   amt,
+		ClaimID:  id,
+	}
+
+	return ct.forwardNodeChange(chg)
+}
+
+// UpdateClaim updates a Claim in the ClaimTrie.
+func (ct *ClaimTrie) UpdateClaim(name []byte, op wire.OutPoint, amt int64, id change.ClaimID) error {
+
+	chg := change.Change{
+		Type:     change.UpdateClaim,
+		Name:     name,
+		OutPoint: op,
+		Amount:   amt,
+		ClaimID:  id,
+	}
+
+	return ct.forwardNodeChange(chg)
+}
+
+// SpendClaim spends a Claim in the ClaimTrie.
+func (ct *ClaimTrie) SpendClaim(name []byte, op wire.OutPoint, id change.ClaimID) error {
+
+	chg := change.Change{
+		Type:     change.SpendClaim,
+		Name:     name,
+		OutPoint: op,
+		ClaimID:  id,
+	}
+
+	return ct.forwardNodeChange(chg)
+}
+
+// AddSupport adds a Support to the ClaimTrie.
+func (ct *ClaimTrie) AddSupport(name []byte, op wire.OutPoint, amt int64, id change.ClaimID) error {
+
+	chg := change.Change{
+		Type:     change.AddSupport,
+		Name:     name,
+		OutPoint: op,
+		Amount:   amt,
+		ClaimID:  id,
+	}
+
+	return ct.forwardNodeChange(chg)
+}
+
+// SpendSupport spends a Support in the ClaimTrie.
+func (ct *ClaimTrie) SpendSupport(name []byte, op wire.OutPoint, id change.ClaimID) error {
+
+	chg := change.Change{
+		Type:     change.SpendSupport,
+		Name:     name,
+		OutPoint: op,
+		ClaimID:  id,
+	}
+
+	return ct.forwardNodeChange(chg)
+}
+
+// AppendBlock increases block by one.
+func (ct *ClaimTrie) AppendBlock() error {
+
+	ct.height++
+
+	names, err := ct.nodeManager.IncrementHeightTo(ct.height)
+	if err != nil {
+		return errors.Wrap(err, "node manager increment")
+	}
+
+	expirations, err := ct.temporalRepo.NodesAt(ct.height)
+	if err != nil {
+		return errors.Wrap(err, "temporal repo get")
+	}
+
+	names = removeDuplicates(names) // comes out sorted
+
+	updateNames := make([][]byte, 0, len(names)+len(expirations))
+	updateHeights := make([]int32, 0, len(names)+len(expirations))
+	updateNames = append(updateNames, names...)
+	for range names { // log to the db that we updated a name at this height for rollback purposes
+		updateHeights = append(updateHeights, ct.height)
+	}
+	names = append(names, expirations...)
+	names = removeDuplicates(names)
+
+	for _, name := range names {
+
+		ct.merkleTrie.Update(name, true)
+
+		newName, nextUpdate := ct.nodeManager.NextUpdateHeightOfNode(name)
+		if nextUpdate <= 0 {
+			continue // some names are no longer there; that's not an error
+		}
+		updateNames = append(updateNames, newName) // TODO: make sure using the temporalRepo batch is actually faster
+		updateHeights = append(updateHeights, nextUpdate)
+	}
+	if len(updateNames) != 0 {
+		err = ct.temporalRepo.SetNodesAt(updateNames, updateHeights)
+		if err != nil {
+			return errors.Wrap(err, "temporal repo set")
+		}
+	}
+
+	hitFork := ct.updateTrieForHashForkIfNecessary()
+
+	h := ct.MerkleHash()
+	ct.blockRepo.Set(ct.height, h)
+
+	if hitFork {
+		ct.merkleTrie.SetRoot(h, names) // for clearing the memory entirely
+	}
+
+	return nil
+}
+
+func (ct *ClaimTrie) updateTrieForHashForkIfNecessary() bool {
+	if ct.height != param.ActiveParams.AllClaimsInMerkleForkHeight {
+		return false
+	}
+
+	node.LogOnce("Marking all trie nodes as dirty for the hash fork...")
+
+	// invalidate all names because we have to recompute the hash on everything
+	ct.nodeManager.IterateNames(func(name []byte) bool {
+		ct.merkleTrie.Update(name, false)
+		return true
+	})
+
+	node.LogOnce("Done. Now recomputing all hashes...")
+	return true
+}
+
+func removeDuplicates(names [][]byte) [][]byte { // this might be too expensive; we'll have to profile it
+	sort.Slice(names, func(i, j int) bool { // put names in order so we can skip duplicates
+		return bytes.Compare(names[i], names[j]) < 0
+	})
+
+	for i := len(names) - 2; i >= 0; i-- {
+		if bytes.Equal(names[i], names[i+1]) {
+			names = append(names[:i], names[i+1:]...)
+		}
+	}
+	return names
+}
+
+// ResetHeight resets the ClaimTrie to a previous known height..
+func (ct *ClaimTrie) ResetHeight(height int32) error {
+
+	names := make([][]byte, 0)
+	for h := height + 1; h <= ct.height; h++ {
+		results, err := ct.temporalRepo.NodesAt(h)
+		if err != nil {
+			return err
+		}
+		names = append(names, results...)
+	}
+	err := ct.nodeManager.DecrementHeightTo(names, height)
+	if err != nil {
+		return err
+	}
+
+	passedHashFork := ct.height >= param.ActiveParams.AllClaimsInMerkleForkHeight && height < param.ActiveParams.AllClaimsInMerkleForkHeight
+	ct.height = height
+	hash, err := ct.blockRepo.Get(height)
+	if err != nil {
+		return err
+	}
+
+	if passedHashFork {
+		names = nil // force them to reconsider all names
+	}
+	ct.merkleTrie.SetRoot(hash, names)
+
+	if !ct.MerkleHash().IsEqual(hash) {
+		return errors.Errorf("unable to restore the hash at height %d", height)
+	}
+	return nil
+}
+
+// MerkleHash returns the Merkle Hash of the claimTrie.
+func (ct *ClaimTrie) MerkleHash() *chainhash.Hash {
+	if ct.height >= param.ActiveParams.AllClaimsInMerkleForkHeight {
+		return ct.merkleTrie.MerkleHashAllClaims()
+	}
+	return ct.merkleTrie.MerkleHash()
+}
+
+// Height returns the current block height.
+func (ct *ClaimTrie) Height() int32 {
+	return ct.height
+}
+
+// Close persists states.
+// Any calls to the ClaimTrie after Close() being called results undefined behaviour.
+func (ct *ClaimTrie) Close() {
+
+	for i := len(ct.cleanups) - 1; i >= 0; i-- {
+		cleanup := ct.cleanups[i]
+		err := cleanup()
+		if err != nil { // it would be better to cleanup what we can than exit early
+			node.LogOnce("On cleanup: " + err.Error())
+		}
+	}
+	ct.cleanups = nil
+}
+
+func (ct *ClaimTrie) forwardNodeChange(chg change.Change) error {
+
+	chg.Height = ct.Height() + 1
+
+	err := ct.nodeManager.AppendChange(chg)
+	if err != nil {
+		return fmt.Errorf("node manager handle change: %w", err)
+	}
+
+	return nil
+}
+
+func (ct *ClaimTrie) NodeAt(height int32, name []byte) (*node.Node, error) {
+	return ct.nodeManager.NodeAt(height, name)
+}
+
+func (ct *ClaimTrie) NamesChangedInBlock(height int32) ([]string, error) {
+	hits, err := ct.temporalRepo.NodesAt(height)
+	r := make([]string, len(hits))
+	for i := range hits {
+		r[i] = string(hits[i])
+	}
+	return r, err
+}
+
+func (ct *ClaimTrie) FlushToDisk() {
+	// maybe the user can fix the file lock shown in the warning before they shut down
+	if err := ct.nodeManager.Flush(); err != nil {
+		node.Warn("During nodeManager flush: " + err.Error())
+	}
+	if err := ct.temporalRepo.Flush(); err != nil {
+		node.Warn("During temporalRepo flush: " + err.Error())
+	}
+	if err := ct.merkleTrie.Flush(); err != nil {
+		node.Warn("During merkleTrie flush: " + err.Error())
+	}
+	if err := ct.blockRepo.Flush(); err != nil {
+		node.Warn("During blockRepo flush: " + err.Error())
+	}
+}

claimtrie/claimtrie_test.go

@@ -0,0 +1,987 @@
+package claimtrie
+
+import (
+	"math/rand"
+	"testing"
+	"time"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/config"
+	"github.com/btcsuite/btcd/claimtrie/merkletrie"
+	"github.com/btcsuite/btcd/claimtrie/param"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/wire"
+
+	"github.com/stretchr/testify/require"
+)
+
+var cfg = config.DefaultConfig
+
+func setup(t *testing.T) {
+	param.SetNetwork(wire.TestNet)
+	cfg.DataDir = t.TempDir()
+}
+
+func b(s string) []byte {
+	return []byte(s)
+}
+
+func buildTx(hash chainhash.Hash) *wire.MsgTx {
+	tx := wire.NewMsgTx(1)
+	txIn := wire.NewTxIn(wire.NewOutPoint(&hash, 0), nil, nil)
+	tx.AddTxIn(txIn)
+	tx.AddTxOut(wire.NewTxOut(0, nil))
+	return tx
+}
+
+func TestFixedHashes(t *testing.T) {
+
+	r := require.New(t)
+
+	setup(t)
+	ct, err := New(cfg)
+	r.NoError(err)
+	defer ct.Close()
+
+	r.Equal(merkletrie.EmptyTrieHash[:], ct.MerkleHash()[:])
+
+	tx1 := buildTx(*merkletrie.EmptyTrieHash)
+	tx2 := buildTx(tx1.TxHash())
+	tx3 := buildTx(tx2.TxHash())
+	tx4 := buildTx(tx3.TxHash())
+
+	err = ct.AddClaim(b("test"), tx1.TxIn[0].PreviousOutPoint, change.NewClaimID(tx1.TxIn[0].PreviousOutPoint), 50)
+	r.NoError(err)
+
+	err = ct.AddClaim(b("test2"), tx2.TxIn[0].PreviousOutPoint, change.NewClaimID(tx2.TxIn[0].PreviousOutPoint), 50)
+	r.NoError(err)
+
+	err = ct.AddClaim(b("test"), tx3.TxIn[0].PreviousOutPoint, change.NewClaimID(tx3.TxIn[0].PreviousOutPoint), 50)
+	r.NoError(err)
+
+	err = ct.AddClaim(b("tes"), tx4.TxIn[0].PreviousOutPoint, change.NewClaimID(tx4.TxIn[0].PreviousOutPoint), 50)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	expected, err := chainhash.NewHashFromStr("938fb93364bf8184e0b649c799ae27274e8db5221f1723c99fb2acd3386cfb00")
+	r.NoError(err)
+	r.Equal(expected[:], ct.MerkleHash()[:])
+}
+
+func TestNormalizationFork(t *testing.T) {
+	r := require.New(t)
+
+	setup(t)
+	param.ActiveParams.NormalizedNameForkHeight = 2
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("AÑEJO"), o1, change.NewClaimID(o1), 10)
+	r.NoError(err)
+
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.AddClaim([]byte("AÑejo"), o2, change.NewClaimID(o2), 5)
+	r.NoError(err)
+
+	o3 := wire.OutPoint{Hash: hash, Index: 3}
+	err = ct.AddClaim([]byte("あてはまる"), o3, change.NewClaimID(o3), 5)
+	r.NoError(err)
+
+	o4 := wire.OutPoint{Hash: hash, Index: 4}
+	err = ct.AddClaim([]byte("Aḿlie"), o4, change.NewClaimID(o4), 5)
+	r.NoError(err)
+
+	o5 := wire.OutPoint{Hash: hash, Index: 5}
+	err = ct.AddClaim([]byte("TEST"), o5, change.NewClaimID(o5), 5)
+	r.NoError(err)
+
+	o6 := wire.OutPoint{Hash: hash, Index: 6}
+	err = ct.AddClaim([]byte("test"), o6, change.NewClaimID(o6), 7)
+	r.NoError(err)
+
+	o7 := wire.OutPoint{Hash: hash, Index: 7}
+	err = ct.AddSupport([]byte("test"), o7, 11, change.NewClaimID(o6))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	r.NotEqual(merkletrie.EmptyTrieHash[:], ct.MerkleHash()[:])
+
+	n, err := ct.nodeManager.NodeAt(ct.nodeManager.Height(), []byte("AÑEJO"))
+	r.NoError(err)
+	r.NotNil(n.BestClaim)
+	r.Equal(int32(1), n.TakenOverAt)
+	n.Close()
+
+	o8 := wire.OutPoint{Hash: hash, Index: 8}
+	err = ct.AddClaim([]byte("aÑEJO"), o8, change.NewClaimID(o8), 8)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	r.NotEqual(merkletrie.EmptyTrieHash[:], ct.MerkleHash()[:])
+
+	n, err = ct.nodeManager.NodeAt(ct.nodeManager.Height(), []byte("añejo"))
+	r.NoError(err)
+	r.Equal(3, len(n.Claims))
+	r.Equal(uint32(1), n.BestClaim.OutPoint.Index)
+	r.Equal(int32(2), n.TakenOverAt)
+
+	n, err = ct.nodeManager.NodeAt(ct.nodeManager.Height(), []byte("test"))
+	r.NoError(err)
+	r.Equal(int64(18), n.BestClaim.Amount+n.SupportSums[n.BestClaim.ClaimID.Key()])
+	n.Close()
+}
+
+func TestActivationsOnNormalizationFork(t *testing.T) {
+
+	r := require.New(t)
+
+	setup(t)
+	param.ActiveParams.NormalizedNameForkHeight = 4
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+
+	o7 := wire.OutPoint{Hash: hash, Index: 7}
+	err = ct.AddClaim([]byte("A"), o7, change.NewClaimID(o7), 1)
+	r.NoError(err)
+	err = ct.AppendBlock()
+	r.NoError(err)
+	err = ct.AppendBlock()
+	r.NoError(err)
+	err = ct.AppendBlock()
+	r.NoError(err)
+	verifyBestIndex(t, ct, "A", 7, 1)
+
+	o8 := wire.OutPoint{Hash: hash, Index: 8}
+	err = ct.AddClaim([]byte("A"), o8, change.NewClaimID(o8), 2)
+	r.NoError(err)
+	err = ct.AppendBlock()
+	r.NoError(err)
+	verifyBestIndex(t, ct, "a", 8, 2)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	err = ct.AppendBlock()
+	r.NoError(err)
+	verifyBestIndex(t, ct, "a", 8, 2)
+
+	err = ct.ResetHeight(3)
+	r.NoError(err)
+	verifyBestIndex(t, ct, "A", 7, 1)
+}
+
+func TestNormalizationSortOrder(t *testing.T) {
+
+	r := require.New(t)
+	// this was an unfortunate bug; the normalization fork should not have activated anything
+	// alas, it's now part of our history; we hereby test it to keep it that way
+	setup(t)
+	param.ActiveParams.NormalizedNameForkHeight = 2
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("A"), o1, change.NewClaimID(o1), 1)
+	r.NoError(err)
+
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.AddClaim([]byte("A"), o2, change.NewClaimID(o2), 2)
+	r.NoError(err)
+
+	o3 := wire.OutPoint{Hash: hash, Index: 3}
+	err = ct.AddClaim([]byte("a"), o3, change.NewClaimID(o3), 3)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	verifyBestIndex(t, ct, "A", 2, 2)
+	verifyBestIndex(t, ct, "a", 3, 1)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	verifyBestIndex(t, ct, "a", 3, 3)
+}
+
+func verifyBestIndex(t *testing.T, ct *ClaimTrie, name string, idx uint32, claims int) {
+
+	r := require.New(t)
+
+	n, err := ct.nodeManager.NodeAt(ct.nodeManager.Height(), []byte(name))
+	r.NoError(err)
+	r.Equal(claims, len(n.Claims))
+	if claims > 0 {
+		r.Equal(idx, n.BestClaim.OutPoint.Index)
+	}
+	n.Close()
+}
+
+func TestRebuild(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("test1"), o1, change.NewClaimID(o1), 1)
+	r.NoError(err)
+
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.AddClaim([]byte("test2"), o2, change.NewClaimID(o2), 2)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	m := ct.MerkleHash()
+	r.NotNil(m)
+	r.NotEqual(*merkletrie.EmptyTrieHash, *m)
+
+	ct.merkleTrie = merkletrie.NewRamTrie(ct.nodeManager)
+	ct.merkleTrie.SetRoot(m, nil)
+
+	m2 := ct.MerkleHash()
+	r.NotNil(m2)
+	r.Equal(*m, *m2)
+}
+
+func BenchmarkClaimTrie_AppendBlock(b *testing.B) {
+
+	rand.Seed(42)
+	names := make([][]byte, 0, b.N)
+
+	for i := 0; i < b.N; i++ {
+		names = append(names, randomName())
+	}
+
+	param.SetNetwork(wire.TestNet)
+	param.ActiveParams.OriginalClaimExpirationTime = 1000000
+	param.ActiveParams.ExtendedClaimExpirationTime = 1000000
+	cfg.DataDir = b.TempDir()
+
+	r := require.New(b)
+	ct, err := New(cfg)
+	r.NoError(err)
+	defer ct.Close()
+	h1 := chainhash.Hash{100, 200}
+
+	start := time.Now()
+	b.ResetTimer()
+
+	c := 0
+	for i := 0; i < b.N; i++ {
+		op := wire.OutPoint{Hash: h1, Index: uint32(i)}
+		id := change.NewClaimID(op)
+		err = ct.AddClaim(names[i], op, id, 500)
+		r.NoError(err)
+		if c++; (c & 0xff) == 0xff {
+			err = ct.AppendBlock()
+			r.NoError(err)
+		}
+	}
+
+	for i := 0; i < b.N; i++ {
+		op := wire.OutPoint{Hash: h1, Index: uint32(i)}
+		id := change.NewClaimID(op)
+		op.Hash[0] = 1
+		err = ct.UpdateClaim(names[i], op, 400, id)
+		r.NoError(err)
+		if c++; (c & 0xff) == 0xff {
+			err = ct.AppendBlock()
+			r.NoError(err)
+		}
+	}
+
+	for i := 0; i < b.N; i++ {
+		op := wire.OutPoint{Hash: h1, Index: uint32(i)}
+		id := change.NewClaimID(op)
+		op.Hash[0] = 2
+		err = ct.UpdateClaim(names[i], op, 300, id)
+		r.NoError(err)
+		if c++; (c & 0xff) == 0xff {
+			err = ct.AppendBlock()
+			r.NoError(err)
+		}
+	}
+
+	for i := 0; i < b.N; i++ {
+		op := wire.OutPoint{Hash: h1, Index: uint32(i)}
+		id := change.NewClaimID(op)
+		op.Hash[0] = 3
+		err = ct.SpendClaim(names[i], op, id)
+		r.NoError(err)
+		if c++; (c & 0xff) == 0xff {
+			err = ct.AppendBlock()
+			r.NoError(err)
+		}
+	}
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	b.StopTimer()
+	ht := ct.height
+	h1 = *ct.MerkleHash()
+	ct.Close()
+	b.Logf("Running AppendBlock bench with %d names in %f sec. Height: %d, Hash: %s",
+		b.N, time.Since(start).Seconds(), ht, h1.String())
+}
+
+func randomName() []byte {
+	name := make([]byte, rand.Intn(30)+10)
+	rand.Read(name)
+	for i := range name {
+		name[i] %= 56
+		name[i] += 65
+	}
+	return name
+}
+
+func TestClaimReplace(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("bass"), o1, change.NewClaimID(o1), 8)
+	r.NoError(err)
+
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.AddClaim([]byte("basso"), o2, change.NewClaimID(o2), 10)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	n, err := ct.NodeAt(ct.height, []byte("bass"))
+	r.Equal(o1.String(), n.BestClaim.OutPoint.String())
+
+	err = ct.SpendClaim([]byte("bass"), o1, n.BestClaim.ClaimID)
+	r.NoError(err)
+
+	o4 := wire.OutPoint{Hash: hash, Index: 4}
+	err = ct.AddClaim([]byte("bassfisher"), o4, change.NewClaimID(o4), 12)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	n, err = ct.NodeAt(ct.height, []byte("bass"))
+	r.NoError(err)
+	r.True(n == nil || !n.HasActiveBestClaim())
+	n, err = ct.NodeAt(ct.height, []byte("bassfisher"))
+	r.Equal(o4.String(), n.BestClaim.OutPoint.String())
+}
+
+func TestGeneralClaim(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 8)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	err = ct.ResetHeight(ct.height - 1)
+	r.NoError(err)
+	n, err := ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.True(n == nil || !n.HasActiveBestClaim())
+
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 8)
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.AddClaim([]byte("test"), o2, change.NewClaimID(o2), 8)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+	err = ct.ResetHeight(ct.height - 1)
+	r.NoError(err)
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.True(n == nil || !n.HasActiveBestClaim())
+
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 8)
+	r.NoError(err)
+	err = ct.AppendBlock()
+	r.NoError(err)
+	err = ct.AddClaim([]byte("test"), o2, change.NewClaimID(o2), 8)
+	r.NoError(err)
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	err = ct.ResetHeight(ct.height - 2)
+	r.NoError(err)
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.True(n == nil || !n.HasActiveBestClaim())
+}
+
+func TestClaimTakeover(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 8)
+	r.NoError(err)
+
+	for i := 0; i < 10; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.AddClaim([]byte("test"), o2, change.NewClaimID(o2), 18)
+	r.NoError(err)
+
+	for i := 0; i < 10; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+
+	n, err := ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o1.String(), n.BestClaim.OutPoint.String())
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o2.String(), n.BestClaim.OutPoint.String())
+
+	err = ct.ResetHeight(ct.height - 1)
+	r.NoError(err)
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o1.String(), n.BestClaim.OutPoint.String())
+}
+
+func TestSpendClaim(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 18)
+	r.NoError(err)
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.AddClaim([]byte("test"), o2, change.NewClaimID(o2), 8)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	err = ct.SpendClaim([]byte("test"), o1, change.NewClaimID(o1))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err := ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o2.String(), n.BestClaim.OutPoint.String())
+
+	err = ct.ResetHeight(ct.height - 1)
+	r.NoError(err)
+
+	o3 := wire.OutPoint{Hash: hash, Index: 3}
+	err = ct.AddClaim([]byte("test"), o3, change.NewClaimID(o3), 22)
+	r.NoError(err)
+
+	for i := 0; i < 10; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+
+	o4 := wire.OutPoint{Hash: hash, Index: 4}
+	err = ct.AddClaim([]byte("test"), o4, change.NewClaimID(o4), 28)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o3.String(), n.BestClaim.OutPoint.String())
+
+	err = ct.SpendClaim([]byte("test"), o3, n.BestClaim.ClaimID)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o4.String(), n.BestClaim.OutPoint.String())
+
+	err = ct.SpendClaim([]byte("test"), o1, change.NewClaimID(o1))
+	r.NoError(err)
+	err = ct.SpendClaim([]byte("test"), o2, change.NewClaimID(o2))
+	r.NoError(err)
+	err = ct.SpendClaim([]byte("test"), o3, change.NewClaimID(o3))
+	r.NoError(err)
+	err = ct.SpendClaim([]byte("test"), o4, change.NewClaimID(o4))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.True(n == nil || !n.HasActiveBestClaim())
+
+	h := ct.MerkleHash()
+	r.Equal(merkletrie.EmptyTrieHash.String(), h.String())
+}
+
+func TestSupportDelay(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 18)
+	r.NoError(err)
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.AddClaim([]byte("test"), o2, change.NewClaimID(o2), 8)
+	r.NoError(err)
+
+	o3 := wire.OutPoint{Hash: hash, Index: 3}
+	err = ct.AddSupport([]byte("test"), o3, 18, change.NewClaimID(o3)) // using bad ClaimID on purpose
+	r.NoError(err)
+	o4 := wire.OutPoint{Hash: hash, Index: 4}
+	err = ct.AddSupport([]byte("test"), o4, 18, change.NewClaimID(o2))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err := ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o2.String(), n.BestClaim.OutPoint.String())
+
+	for i := 0; i < 10; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+
+	o5 := wire.OutPoint{Hash: hash, Index: 5}
+	err = ct.AddSupport([]byte("test"), o5, 18, change.NewClaimID(o1))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o2.String(), n.BestClaim.OutPoint.String())
+
+	for i := 0; i < 11; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o1.String(), n.BestClaim.OutPoint.String())
+
+	err = ct.ResetHeight(ct.height - 1)
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o2.String(), n.BestClaim.OutPoint.String())
+}
+
+func TestSupportSpending(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 18)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	o3 := wire.OutPoint{Hash: hash, Index: 3}
+	err = ct.AddSupport([]byte("test"), o3, 18, change.NewClaimID(o1))
+	r.NoError(err)
+
+	err = ct.SpendClaim([]byte("test"), o1, change.NewClaimID(o1))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err := ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.True(n == nil || !n.HasActiveBestClaim())
+}
+
+func TestSupportOnUpdate(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 18)
+	r.NoError(err)
+
+	err = ct.SpendClaim([]byte("test"), o1, change.NewClaimID(o1))
+	r.NoError(err)
+
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	err = ct.UpdateClaim([]byte("test"), o2, 28, change.NewClaimID(o1))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err := ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(int64(28), n.BestClaim.Amount)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	err = ct.SpendClaim([]byte("test"), o2, change.NewClaimID(o1))
+	r.NoError(err)
+
+	o3 := wire.OutPoint{Hash: hash, Index: 3}
+	err = ct.UpdateClaim([]byte("test"), o3, 38, change.NewClaimID(o1))
+	r.NoError(err)
+
+	o4 := wire.OutPoint{Hash: hash, Index: 4}
+	err = ct.AddSupport([]byte("test"), o4, 2, change.NewClaimID(o1))
+	r.NoError(err)
+
+	o5 := wire.OutPoint{Hash: hash, Index: 5}
+	err = ct.AddClaim([]byte("test"), o5, change.NewClaimID(o5), 39)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(int64(40), n.BestClaim.Amount+n.SupportSums[n.BestClaim.ClaimID.Key()])
+
+	err = ct.SpendSupport([]byte("test"), o4, n.BestClaim.ClaimID)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	// NOTE: LBRYcrd did not test that supports can trigger a takeover correctly (and it doesn't work here):
+	// n, err = ct.NodeAt(ct.height, []byte("test"))
+	// r.NoError(err)
+	// r.Equal(int64(39), n.BestClaim.Amount + n.SupportSums[n.BestClaim.ClaimID.Key()])
+}
+
+func TestSupportPreservation(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	o3 := wire.OutPoint{Hash: hash, Index: 3}
+	o4 := wire.OutPoint{Hash: hash, Index: 4}
+	o5 := wire.OutPoint{Hash: hash, Index: 5}
+
+	err = ct.AddSupport([]byte("test"), o2, 10, change.NewClaimID(o1))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 18)
+	r.NoError(err)
+
+	err = ct.AddClaim([]byte("test"), o3, change.NewClaimID(o3), 7)
+	r.NoError(err)
+
+	for i := 0; i < 10; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+
+	n, err := ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(int64(28), n.BestClaim.Amount+n.SupportSums[n.BestClaim.ClaimID.Key()])
+
+	err = ct.AddSupport([]byte("test"), o4, 10, change.NewClaimID(o1))
+	r.NoError(err)
+	err = ct.AddSupport([]byte("test"), o5, 100, change.NewClaimID(o3))
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(int64(38), n.BestClaim.Amount+n.SupportSums[n.BestClaim.ClaimID.Key()])
+
+	for i := 0; i < 10; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(int64(107), n.BestClaim.Amount+n.SupportSums[n.BestClaim.ClaimID.Key()])
+}
+
+func TestInvalidClaimID(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+	o2 := wire.OutPoint{Hash: hash, Index: 2}
+	o3 := wire.OutPoint{Hash: hash, Index: 3}
+
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 10)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	err = ct.SpendClaim([]byte("test"), o3, change.NewClaimID(o1))
+	r.NoError(err)
+
+	err = ct.UpdateClaim([]byte("test"), o2, 18, change.NewClaimID(o3))
+	r.NoError(err)
+
+	for i := 0; i < 12; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+
+	n, err := ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Len(n.Claims, 1)
+	r.Len(n.Supports, 0)
+	r.Equal(int64(10), n.BestClaim.Amount+n.SupportSums[n.BestClaim.ClaimID.Key()])
+}
+
+func TestStableTrieHash(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+	param.ActiveParams.AllClaimsInMerkleForkHeight = 8 // changes on this one
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	hash := chainhash.HashH([]byte{1, 2, 3})
+	o1 := wire.OutPoint{Hash: hash, Index: 1}
+
+	err = ct.AddClaim([]byte("test"), o1, change.NewClaimID(o1), 1)
+	r.NoError(err)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	h := ct.MerkleHash()
+	r.NotEqual(merkletrie.EmptyTrieHash.String(), h.String())
+
+	for i := 0; i < 6; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+		r.Equal(h.String(), ct.MerkleHash().String())
+	}
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	r.NotEqual(h.String(), ct.MerkleHash())
+	h = ct.MerkleHash()
+
+	for i := 0; i < 16; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+		r.Equal(h.String(), ct.MerkleHash().String())
+	}
+}
+
+func TestBlock884431(t *testing.T) {
+	r := require.New(t)
+	setup(t)
+	param.ActiveParams.ActiveDelayFactor = 1
+	param.ActiveParams.MaxRemovalWorkaroundHeight = 0
+	param.ActiveParams.AllClaimsInMerkleForkHeight = 0
+
+	ct, err := New(cfg)
+	r.NoError(err)
+	r.NotNil(ct)
+	defer ct.Close()
+
+	// in this block we have a scenario where we update all the child names
+	// which, in the old code, caused a trie vertex to be removed
+	// which, in turn, would trigger a premature takeover
+
+	c := byte(10)
+
+	add := func(s string, amt int64) wire.OutPoint {
+		h := chainhash.HashH([]byte{c})
+		c++
+		o := wire.OutPoint{Hash: h, Index: 1}
+		err := ct.AddClaim([]byte(s), o, change.NewClaimID(o), amt)
+		r.NoError(err)
+		return o
+	}
+
+	update := func(s string, o wire.OutPoint, amt int64) wire.OutPoint {
+		err = ct.SpendClaim([]byte(s), o, change.NewClaimID(o))
+		r.NoError(err)
+
+		h := chainhash.HashH([]byte{c})
+		c++
+		o2 := wire.OutPoint{Hash: h, Index: 2}
+
+		err = ct.UpdateClaim([]byte(s), o2, amt, change.NewClaimID(o))
+		r.NoError(err)
+		return o2
+	}
+
+	o1a := add("go", 10)
+	o1b := add("go", 20)
+	o2 := add("goop", 10)
+	o3 := add("gog", 20)
+
+	o4a := add("test", 10)
+	o4b := add("test", 20)
+	o5 := add("tester", 10)
+	o6 := add("testing", 20)
+
+	for i := 0; i < 10; i++ {
+		err = ct.AppendBlock()
+		r.NoError(err)
+	}
+	n, err := ct.NodeAt(ct.height, []byte("go"))
+	r.NoError(err)
+	r.Equal(o1b.String(), n.BestClaim.OutPoint.String())
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o4b.String(), n.BestClaim.OutPoint.String())
+
+	update("go", o1b, 30)
+	o10 := update("go", o1a, 40)
+	update("gog", o3, 30)
+	update("goop", o2, 30)
+
+	update("testing", o6, 30)
+	o11 := update("test", o4b, 30)
+	update("test", o4a, 40)
+	update("tester", o5, 30)
+
+	err = ct.AppendBlock()
+	r.NoError(err)
+
+	n, err = ct.NodeAt(ct.height, []byte("go"))
+	r.NoError(err)
+	r.Equal(o10.String(), n.BestClaim.OutPoint.String())
+	n, err = ct.NodeAt(ct.height, []byte("test"))
+	r.NoError(err)
+	r.Equal(o11.String(), n.BestClaim.OutPoint.String())
+}

claimtrie/cmd/cmd/block.go

@@ -0,0 +1,98 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/cockroachdb/errors"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(NewBlocCommands())
+}
+
+func NewBlocCommands() *cobra.Command {
+
+	cmd := &cobra.Command{
+		Use:   "block",
+		Short: "Block related commands",
+	}
+
+	cmd.AddCommand(NewBlockBestCommand())
+	cmd.AddCommand(NewBlockListCommand())
+
+	return cmd
+}
+
+func NewBlockBestCommand() *cobra.Command {
+
+	cmd := &cobra.Command{
+		Use:   "best",
+		Short: "Show the height and hash of the best block",
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			db, err := loadBlocksDB()
+			if err != nil {
+				return errors.Wrapf(err, "load blocks database")
+			}
+			defer db.Close()
+
+			chain, err := loadChain(db)
+			if err != nil {
+				return errors.Wrapf(err, "load chain")
+			}
+
+			state := chain.BestSnapshot()
+			fmt.Printf("Block %7d: %s\n", state.Height, state.Hash.String())
+
+			return nil
+		},
+	}
+
+	return cmd
+}
+
+func NewBlockListCommand() *cobra.Command {
+
+	var fromHeight int32
+	var toHeight int32
+
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "List merkle hash of blocks between <from_height> <to_height>",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			db, err := loadBlocksDB()
+			if err != nil {
+				return errors.Wrapf(err, "load blocks database")
+			}
+			defer db.Close()
+
+			chain, err := loadChain(db)
+			if err != nil {
+				return errors.Wrapf(err, "load chain")
+			}
+
+			if toHeight > chain.BestSnapshot().Height {
+				toHeight = chain.BestSnapshot().Height
+			}
+
+			for ht := fromHeight; ht <= toHeight; ht++ {
+				hash, err := chain.BlockHashByHeight(ht)
+				if err != nil {
+					return errors.Wrapf(err, "load hash for %d", ht)
+				}
+				fmt.Printf("Block %7d: %s\n", ht, hash.String())
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().Int32Var(&fromHeight, "from", 0, "From height (inclusive)")
+	cmd.Flags().Int32Var(&toHeight, "to", 0, "To height (inclusive)")
+	cmd.Flags().SortFlags = false
+
+	return cmd
+}

claimtrie/cmd/cmd/chain.go

@@ -0,0 +1,439 @@
+package cmd
+
+import (
+	"os"
+	"path/filepath"
+	"sync"
+	"time"
+
+	"github.com/btcsuite/btcd/blockchain"
+	"github.com/btcsuite/btcd/claimtrie"
+	"github.com/btcsuite/btcd/claimtrie/chain"
+	"github.com/btcsuite/btcd/claimtrie/chain/chainrepo"
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/config"
+	"github.com/btcsuite/btcd/database"
+	_ "github.com/btcsuite/btcd/database/ffldb"
+	"github.com/btcsuite/btcd/txscript"
+	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btcutil"
+
+	"github.com/cockroachdb/errors"
+	"github.com/cockroachdb/pebble"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(NewChainCommands())
+}
+
+func NewChainCommands() *cobra.Command {
+
+	cmd := &cobra.Command{
+		Use:   "chain",
+		Short: "chain related command",
+	}
+
+	cmd.AddCommand(NewChainDumpCommand())
+	cmd.AddCommand(NewChainReplayCommand())
+	cmd.AddCommand(NewChainConvertCommand())
+
+	return cmd
+}
+
+func NewChainDumpCommand() *cobra.Command {
+
+	var chainRepoPath string
+	var fromHeight int32
+	var toHeight int32
+
+	cmd := &cobra.Command{
+		Use:   "dump",
+		Short: "Dump the chain changes between <fromHeight> and <toHeight>",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			dbPath := chainRepoPath
+			log.Debugf("Open chain repo: %q", dbPath)
+			chainRepo, err := chainrepo.NewPebble(dbPath)
+			if err != nil {
+				return errors.Wrapf(err, "open chain repo")
+			}
+
+			for height := fromHeight; height <= toHeight; height++ {
+				changes, err := chainRepo.Load(height)
+				if errors.Is(err, pebble.ErrNotFound) {
+					continue
+				}
+				if err != nil {
+					return errors.Wrapf(err, "load charnges for height: %d")
+				}
+				for _, chg := range changes {
+					showChange(chg)
+				}
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVar(&chainRepoPath, "chaindb", "chain_db", "Claim operation database")
+	cmd.Flags().Int32Var(&fromHeight, "from", 0, "From height (inclusive)")
+	cmd.Flags().Int32Var(&toHeight, "to", 0, "To height (inclusive)")
+	cmd.Flags().SortFlags = false
+
+	return cmd
+}
+
+func NewChainReplayCommand() *cobra.Command {
+
+	var chainRepoPath string
+	var fromHeight int32
+	var toHeight int32
+
+	cmd := &cobra.Command{
+		Use:   "replay",
+		Short: "Replay the chain changes between <fromHeight> and <toHeight>",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			for _, dbName := range []string{
+				cfg.BlockRepoPebble.Path,
+				cfg.NodeRepoPebble.Path,
+				cfg.MerkleTrieRepoPebble.Path,
+				cfg.TemporalRepoPebble.Path,
+			} {
+				dbPath := filepath.Join(dataDir, netName, "claim_dbs", dbName)
+				log.Debugf("Delete repo: %q", dbPath)
+				err := os.RemoveAll(dbPath)
+				if err != nil {
+					return errors.Wrapf(err, "delete repo: %q", dbPath)
+				}
+			}
+
+			log.Debugf("Open chain repo: %q", chainRepoPath)
+			chainRepo, err := chainrepo.NewPebble(chainRepoPath)
+			if err != nil {
+				return errors.Wrapf(err, "open chain repo")
+			}
+
+			cfg := config.DefaultConfig
+			cfg.RamTrie = true
+			cfg.DataDir = filepath.Join(dataDir, netName)
+
+			ct, err := claimtrie.New(cfg)
+			if err != nil {
+				return errors.Wrapf(err, "create claimtrie")
+			}
+			defer ct.Close()
+
+			db, err := loadBlocksDB()
+			if err != nil {
+				return errors.Wrapf(err, "load blocks database")
+			}
+
+			chain, err := loadChain(db)
+			if err != nil {
+				return errors.Wrapf(err, "load chain")
+			}
+
+			startTime := time.Now()
+			for ht := fromHeight; ht < toHeight; ht++ {
+
+				changes, err := chainRepo.Load(ht + 1)
+				if errors.Is(err, pebble.ErrNotFound) {
+					// do nothing.
+				} else if err != nil {
+					return errors.Wrapf(err, "load changes for block %d", ht)
+				}
+
+				for _, chg := range changes {
+
+					switch chg.Type {
+					case change.AddClaim:
+						err = ct.AddClaim(chg.Name, chg.OutPoint, chg.ClaimID, chg.Amount)
+					case change.UpdateClaim:
+						err = ct.UpdateClaim(chg.Name, chg.OutPoint, chg.Amount, chg.ClaimID)
+					case change.SpendClaim:
+						err = ct.SpendClaim(chg.Name, chg.OutPoint, chg.ClaimID)
+					case change.AddSupport:
+						err = ct.AddSupport(chg.Name, chg.OutPoint, chg.Amount, chg.ClaimID)
+					case change.SpendSupport:
+						err = ct.SpendSupport(chg.Name, chg.OutPoint, chg.ClaimID)
+					default:
+						err = errors.Errorf("invalid change type: %v", chg)
+					}
+
+					if err != nil {
+						return errors.Wrapf(err, "execute change %v", chg)
+					}
+				}
+				err = appendBlock(ct, chain)
+				if err != nil {
+					return errors.Wrapf(err, "appendBlock")
+				}
+
+				if time.Since(startTime) > 5*time.Second {
+					log.Infof("Block: %d", ct.Height())
+					startTime = time.Now()
+				}
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVar(&chainRepoPath, "chaindb", "chain_db", "Claim operation database")
+	cmd.Flags().Int32Var(&fromHeight, "from", 0, "From height")
+	cmd.Flags().Int32Var(&toHeight, "to", 0, "To height")
+	cmd.Flags().SortFlags = false
+
+	return cmd
+}
+
+func appendBlock(ct *claimtrie.ClaimTrie, chain *blockchain.BlockChain) error {
+
+	err := ct.AppendBlock()
+	if err != nil {
+		return errors.Wrapf(err, "append block: %w")
+	}
+
+	block, err := chain.BlockByHeight(ct.Height())
+	if err != nil {
+		return errors.Wrapf(err, "load from block repo: %w")
+	}
+	hash := block.MsgBlock().Header.ClaimTrie
+
+	if *ct.MerkleHash() != hash {
+		return errors.Errorf("hash mismatched at height %5d: exp: %s, got: %s", ct.Height(), hash, ct.MerkleHash())
+	}
+
+	return nil
+}
+
+func NewChainConvertCommand() *cobra.Command {
+
+	var chainRepoPath string
+	var toHeight int32
+
+	cmd := &cobra.Command{
+		Use:   "convert",
+		Short: "convert changes from 0 to <toHeight>",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			db, err := loadBlocksDB()
+			if err != nil {
+				return errors.Wrapf(err, "load block db")
+			}
+			defer db.Close()
+
+			chain, err := loadChain(db)
+			if err != nil {
+				return errors.Wrapf(err, "load block db")
+			}
+
+			if toHeight > chain.BestSnapshot().Height {
+				toHeight = chain.BestSnapshot().Height
+			}
+
+			chainRepo, err := chainrepo.NewPebble(chainRepoPath)
+			if err != nil {
+				return errors.Wrapf(err, "open chain repo: %v")
+			}
+			defer chainRepo.Close()
+
+			converter := chainConverter{
+				db:          db,
+				chain:       chain,
+				chainRepo:   chainRepo,
+				toHeight:    toHeight,
+				blockChan:   make(chan *btcutil.Block, 1000),
+				changesChan: make(chan []change.Change, 1000),
+				wg:          &sync.WaitGroup{},
+				stat:        &stat{},
+			}
+
+			startTime := time.Now()
+			err = converter.start()
+			if err != nil {
+				return errors.Wrapf(err, "start Converter")
+			}
+
+			converter.wait()
+			log.Infof("Convert chain: took %s", time.Since(startTime))
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVar(&chainRepoPath, "chaindb", "chain_db", "Claim operation database")
+	cmd.Flags().Int32Var(&toHeight, "to", 0, "toHeight")
+	cmd.Flags().SortFlags = false
+	return cmd
+}
+
+type stat struct {
+	blocksFetched   int
+	blocksProcessed int
+	changesSaved    int
+}
+
+type chainConverter struct {
+	db        database.DB
+	chain     *blockchain.BlockChain
+	chainRepo chain.Repo
+	toHeight  int32
+
+	blockChan   chan *btcutil.Block
+	changesChan chan []change.Change
+
+	wg *sync.WaitGroup
+
+	stat *stat
+}
+
+func (cc *chainConverter) wait() {
+	cc.wg.Wait()
+}
+
+func (cb *chainConverter) start() error {
+
+	go cb.reportStats()
+
+	cb.wg.Add(3)
+	go cb.getBlock()
+	go cb.processBlock()
+	go cb.saveChanges()
+
+	return nil
+}
+
+func (cb *chainConverter) getBlock() {
+	defer cb.wg.Done()
+	defer close(cb.blockChan)
+
+	for ht := int32(0); ht < cb.toHeight; ht++ {
+		block, err := cb.chain.BlockByHeight(ht)
+		if err != nil {
+			if errors.Cause(err).Error() == "too many open files" {
+				err = errors.WithHintf(err, "try ulimit -n 2048")
+			}
+			log.Errorf("load changes at %d: %s", ht, err)
+			return
+		}
+		cb.stat.blocksFetched++
+		cb.blockChan <- block
+	}
+}
+
+func (cb *chainConverter) processBlock() {
+	defer cb.wg.Done()
+	defer close(cb.changesChan)
+
+	utxoPubScripts := map[wire.OutPoint][]byte{}
+	for block := range cb.blockChan {
+		var changes []change.Change
+		for _, tx := range block.Transactions() {
+
+			if blockchain.IsCoinBase(tx) {
+				continue
+			}
+
+			for _, txIn := range tx.MsgTx().TxIn {
+				prevOutpoint := txIn.PreviousOutPoint
+				pkScript := utxoPubScripts[prevOutpoint]
+				cs, closer, err := txscript.DecodeClaimScript(pkScript)
+				if err == txscript.ErrNotClaimScript {
+					closer()
+					continue
+				}
+				if err != nil {
+					log.Criticalf("Can't parse claim script: %s", err)
+				}
+
+				chg := change.Change{
+					Height:   block.Height(),
+					Name:     cs.Name(),
+					OutPoint: txIn.PreviousOutPoint,
+				}
+				delete(utxoPubScripts, prevOutpoint)
+
+				switch cs.Opcode() {
+				case txscript.OP_CLAIMNAME:
+					chg.Type = change.SpendClaim
+					chg.ClaimID = change.NewClaimID(chg.OutPoint)
+				case txscript.OP_UPDATECLAIM:
+					chg.Type = change.SpendClaim
+					copy(chg.ClaimID[:], cs.ClaimID())
+				case txscript.OP_SUPPORTCLAIM:
+					chg.Type = change.SpendSupport
+					copy(chg.ClaimID[:], cs.ClaimID())
+				}
+
+				changes = append(changes, chg)
+				closer()
+			}
+
+			op := *wire.NewOutPoint(tx.Hash(), 0)
+			for i, txOut := range tx.MsgTx().TxOut {
+				cs, closer, err := txscript.DecodeClaimScript(txOut.PkScript)
+				if err == txscript.ErrNotClaimScript {
+					closer()
+					continue
+				}
+
+				op.Index = uint32(i)
+				chg := change.Change{
+					Height:   block.Height(),
+					Name:     cs.Name(),
+					OutPoint: op,
+					Amount:   txOut.Value,
+				}
+				utxoPubScripts[op] = txOut.PkScript
+
+				switch cs.Opcode() {
+				case txscript.OP_CLAIMNAME:
+					chg.Type = change.AddClaim
+					chg.ClaimID = change.NewClaimID(op)
+				case txscript.OP_SUPPORTCLAIM:
+					chg.Type = change.AddSupport
+					copy(chg.ClaimID[:], cs.ClaimID())
+				case txscript.OP_UPDATECLAIM:
+					chg.Type = change.UpdateClaim
+					copy(chg.ClaimID[:], cs.ClaimID())
+				}
+				changes = append(changes, chg)
+				closer()
+			}
+		}
+		cb.stat.blocksProcessed++
+
+		if len(changes) != 0 {
+			cb.changesChan <- changes
+		}
+	}
+}
+
+func (cb *chainConverter) saveChanges() {
+	defer cb.wg.Done()
+
+	for changes := range cb.changesChan {
+		err := cb.chainRepo.Save(changes[0].Height, changes)
+		if err != nil {
+			log.Errorf("save to chain repo: %s", err)
+			return
+		}
+		cb.stat.changesSaved++
+	}
+}
+
+func (cb *chainConverter) reportStats() {
+	stat := cb.stat
+	tick := time.NewTicker(5 * time.Second)
+	for range tick.C {
+		log.Infof("block : %7d / %7d,  changes saved: %d",
+			stat.blocksFetched, stat.blocksProcessed, stat.changesSaved)
+
+	}
+}

claimtrie/cmd/cmd/helper.go

@@ -0,0 +1,62 @@
+package cmd
+
+import (
+	"path/filepath"
+	"time"
+
+	"github.com/btcsuite/btcd/blockchain"
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/btcsuite/btcd/database"
+	"github.com/btcsuite/btcd/txscript"
+
+	"github.com/cockroachdb/errors"
+)
+
+func loadBlocksDB() (database.DB, error) {
+
+	dbPath := filepath.Join(dataDir, netName, "blocks_ffldb")
+	log.Infof("Loading blocks database: %s", dbPath)
+	db, err := database.Open("ffldb", dbPath, chainPramas().Net)
+	if err != nil {
+		return nil, errors.Wrapf(err, "open blocks database")
+	}
+
+	return db, nil
+}
+
+func loadChain(db database.DB) (*blockchain.BlockChain, error) {
+	paramsCopy := chaincfg.MainNetParams
+
+	log.Infof("Loading chain from database")
+
+	startTime := time.Now()
+	chain, err := blockchain.New(&blockchain.Config{
+		DB:          db,
+		ChainParams: &paramsCopy,
+		TimeSource:  blockchain.NewMedianTime(),
+		SigCache:    txscript.NewSigCache(1000),
+	})
+	if err != nil {
+		return nil, errors.Wrapf(err, "create blockchain")
+	}
+
+	log.Infof("Loaded chain from database (%s)", time.Since(startTime))
+
+	return chain, err
+
+}
+
+func chainPramas() chaincfg.Params {
+
+	// Make a copy so the user won't modify the global instance.
+	params := chaincfg.MainNetParams
+	switch netName {
+	case "mainnet":
+		params = chaincfg.MainNetParams
+	case "testnet":
+		params = chaincfg.TestNet3Params
+	case "regtest":
+		params = chaincfg.RegressionNetParams
+	}
+	return params
+}

claimtrie/cmd/cmd/merkletrie.go

@@ -0,0 +1,105 @@
+package cmd
+
+import (
+	"fmt"
+	"path/filepath"
+
+	"github.com/btcsuite/btcd/claimtrie/merkletrie"
+	"github.com/btcsuite/btcd/claimtrie/merkletrie/merkletrierepo"
+	"github.com/btcsuite/btcd/claimtrie/temporal/temporalrepo"
+
+	"github.com/cockroachdb/errors"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(NewTrieCommands())
+}
+
+func NewTrieCommands() *cobra.Command {
+
+	cmd := &cobra.Command{
+		Use:   "trie",
+		Short: "MerkleTrie related commands",
+	}
+
+	cmd.AddCommand(NewTrieNameCommand())
+
+	return cmd
+}
+
+func NewTrieNameCommand() *cobra.Command {
+
+	var height int32
+	var name string
+
+	cmd := &cobra.Command{
+		Use:   "name",
+		Short: "List the claim and child hashes at vertex name of block at height",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			db, err := loadBlocksDB()
+			if err != nil {
+				return errors.Wrapf(err, "load blocks database")
+			}
+			defer db.Close()
+
+			chain, err := loadChain(db)
+			if err != nil {
+				return errors.Wrapf(err, "load chain")
+			}
+
+			state := chain.BestSnapshot()
+			fmt.Printf("Block %7d: %s\n", state.Height, state.Hash.String())
+
+			if height > state.Height {
+				return errors.New("requested height is unavailable")
+			}
+
+			hash := state.Hash
+
+			dbPath := filepath.Join(dataDir, netName, "claim_dbs", cfg.MerkleTrieRepoPebble.Path)
+			log.Debugf("Open merkletrie repo: %q", dbPath)
+			trieRepo, err := merkletrierepo.NewPebble(dbPath)
+			if err != nil {
+				return errors.Wrapf(err, "open merkle trie repo")
+			}
+
+			trie := merkletrie.NewPersistentTrie(nil, trieRepo)
+			defer trie.Close()
+
+			trie.SetRoot(&hash, nil)
+
+			if len(name) > 1 {
+				trie.Dump(name)
+				return nil
+			}
+
+			dbPath = filepath.Join(dataDir, netName, "claim_dbs", cfg.TemporalRepoPebble.Path)
+			log.Debugf("Open temporal repo: %q", dbPath)
+			tmpRepo, err := temporalrepo.NewPebble(dbPath)
+			if err != nil {
+				return errors.Wrapf(err, "open temporal repo")
+			}
+
+			nodes, err := tmpRepo.NodesAt(height)
+			if err != nil {
+				return errors.Wrapf(err, "read temporal repo at %d", height)
+			}
+
+			for _, name := range nodes {
+				fmt.Printf("Name: %s, ", string(name))
+				trie.Dump(string(name))
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().Int32Var(&height, "height", 0, "Height")
+	cmd.Flags().StringVar(&name, "name", "", "Name")
+	cmd.Flags().SortFlags = false
+
+	return cmd
+}

claimtrie/cmd/cmd/node.go

@@ -0,0 +1,155 @@
+package cmd
+
+import (
+	"fmt"
+	"math"
+	"path/filepath"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/node"
+	"github.com/btcsuite/btcd/claimtrie/node/noderepo"
+	"github.com/cockroachdb/errors"
+
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(NewNodeCommands())
+}
+
+func NewNodeCommands() *cobra.Command {
+
+	cmd := &cobra.Command{
+		Use:   "node",
+		Short: "Replay the application of changes on a node up to certain height",
+	}
+
+	cmd.AddCommand(NewNodeDumpCommand())
+	cmd.AddCommand(NewNodeReplayCommand())
+	cmd.AddCommand(NewNodeChildrenCommand())
+
+	return cmd
+}
+
+func NewNodeDumpCommand() *cobra.Command {
+
+	var name string
+	var height int32
+
+	cmd := &cobra.Command{
+		Use:   "dump",
+		Short: "Replay the application of changes on a node up to certain height",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			dbPath := filepath.Join(dataDir, netName, "claim_dbs", cfg.NodeRepoPebble.Path)
+			log.Debugf("Open node repo: %q", dbPath)
+			repo, err := noderepo.NewPebble(dbPath)
+			if err != nil {
+				return errors.Wrapf(err, "open node repo")
+			}
+
+			changes, err := repo.LoadChanges([]byte(name))
+			if err != nil {
+				return errors.Wrapf(err, "load commands")
+			}
+
+			for _, chg := range changes {
+				if chg.Height > height {
+					break
+				}
+				showChange(chg)
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVar(&name, "name", "", "Name")
+	cmd.MarkFlagRequired("name")
+	cmd.Flags().Int32Var(&height, "height", math.MaxInt32, "Height")
+
+	return cmd
+}
+
+func NewNodeReplayCommand() *cobra.Command {
+
+	var name string
+	var height int32
+
+	cmd := &cobra.Command{
+		Use:   "replay",
+		Short: "Replay the changes of <name> up to <height>",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			dbPath := filepath.Join(dataDir, netName, "claim_dbs", cfg.NodeRepoPebble.Path)
+			log.Debugf("Open node repo: %q", dbPath)
+			repo, err := noderepo.NewPebble(dbPath)
+			if err != nil {
+				return errors.Wrapf(err, "open node repo")
+			}
+
+			bm, err := node.NewBaseManager(repo)
+			if err != nil {
+				return errors.Wrapf(err, "create node manager")
+			}
+
+			nm := node.NewNormalizingManager(bm)
+
+			n, err := nm.NodeAt(height, []byte(name))
+			if err != nil || n == nil {
+				return errors.Wrapf(err, "get node: %s", name)
+			}
+
+			showNode(n)
+			n.Close()
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVar(&name, "name", "", "Name")
+	cmd.MarkFlagRequired("name")
+	cmd.Flags().Int32Var(&height, "height", 0, "Height (inclusive)")
+	cmd.Flags().SortFlags = false
+
+	return cmd
+}
+
+func NewNodeChildrenCommand() *cobra.Command {
+
+	var name string
+
+	cmd := &cobra.Command{
+		Use:   "children",
+		Short: "Show all the children names of a given node name",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			dbPath := filepath.Join(dataDir, netName, "claim_dbs", cfg.NodeRepoPebble.Path)
+			log.Debugf("Open node repo: %q", dbPath)
+			repo, err := noderepo.NewPebble(dbPath)
+			if err != nil {
+				return errors.Wrapf(err, "open node repo")
+			}
+
+			fn := func(changes []change.Change) bool {
+				fmt.Printf("Name: %s, Height: %d, %d\n", changes[0].Name, changes[0].Height,
+					changes[len(changes)-1].Height)
+				return true
+			}
+
+			err = repo.IterateChildren([]byte(name), fn)
+			if err != nil {
+				return errors.Wrapf(err, "iterate children: %s", name)
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVar(&name, "name", "", "Name")
+	cmd.MarkFlagRequired("name")
+
+	return cmd
+}

claimtrie/cmd/cmd/root.go

@@ -0,0 +1,55 @@
+package cmd
+
+import (
+	"os"
+
+	"github.com/btcsuite/btcd/claimtrie/config"
+	"github.com/btcsuite/btcd/claimtrie/param"
+	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btclog"
+
+	"github.com/spf13/cobra"
+)
+
+var (
+	log     btclog.Logger
+	cfg     = config.DefaultConfig
+	netName string
+	dataDir string
+)
+
+var rootCmd = NewRootCommand()
+
+func NewRootCommand() *cobra.Command {
+
+	cmd := &cobra.Command{
+		Use:          "claimtrie",
+		Short:        "ClaimTrie Command Line Interface",
+		SilenceUsage: true,
+		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			switch netName {
+			case "mainnet":
+				param.SetNetwork(wire.MainNet)
+			case "testnet":
+				param.SetNetwork(wire.TestNet3)
+			case "regtest":
+				param.SetNetwork(wire.TestNet)
+			}
+		},
+	}
+
+	cmd.PersistentFlags().StringVar(&netName, "netname", "mainnet", "Net name")
+	cmd.PersistentFlags().StringVarP(&dataDir, "datadir", "b", cfg.DataDir, "Data dir")
+
+	return cmd
+}
+
+func Execute() {
+
+	backendLogger := btclog.NewBackend(os.Stdout)
+	defer os.Stdout.Sync()
+	log = backendLogger.Logger("CMDL")
+	log.SetLevel(btclog.LevelDebug)
+
+	rootCmd.Execute() // nolint : errchk
+}

claimtrie/cmd/cmd/temporal.go

@@ -0,0 +1,56 @@
+package cmd
+
+import (
+	"path/filepath"
+
+	"github.com/btcsuite/btcd/claimtrie/temporal/temporalrepo"
+
+	"github.com/cockroachdb/errors"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(NewTemporalCommand())
+}
+
+func NewTemporalCommand() *cobra.Command {
+
+	var fromHeight int32
+	var toHeight int32
+
+	cmd := &cobra.Command{
+		Use:   "temporal",
+		Short: "List which nodes are update in a range of heights",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+
+			dbPath := filepath.Join(dataDir, netName, "claim_dbs", cfg.TemporalRepoPebble.Path)
+			log.Debugf("Open temporal repo: %s", dbPath)
+			repo, err := temporalrepo.NewPebble(dbPath)
+			if err != nil {
+				return errors.Wrapf(err, "open temporal repo")
+			}
+
+			for ht := fromHeight; ht < toHeight; ht++ {
+				names, err := repo.NodesAt(ht)
+				if err != nil {
+					return errors.Wrapf(err, "get node names from temporal")
+				}
+
+				if len(names) == 0 {
+					continue
+				}
+
+				showTemporalNames(ht, names)
+			}
+
+			return nil
+		},
+	}
+
+	cmd.Flags().Int32Var(&fromHeight, "from", 0, "From height (inclusive)")
+	cmd.Flags().Int32Var(&toHeight, "to", 0, "To height (inclusive)")
+	cmd.Flags().SortFlags = false
+
+	return cmd
+}

claimtrie/cmd/cmd/ui.go

@@ -0,0 +1,76 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/node"
+)
+
+var status = map[node.Status]string{
+	node.Accepted:    "Accepted",
+	node.Activated:   "Activated",
+	node.Deactivated: "Deactivated",
+}
+
+func changeType(c change.ChangeType) string {
+	switch c {
+	case change.AddClaim:
+		return "AddClaim"
+	case change.SpendClaim:
+		return "SpendClaim"
+	case change.UpdateClaim:
+		return "UpdateClaim"
+	case change.AddSupport:
+		return "AddSupport"
+	case change.SpendSupport:
+		return "SpendSupport"
+	}
+	return "Unknown"
+}
+
+func showChange(chg change.Change) {
+	fmt.Printf(">>> Height: %6d: %s for %04s, %15d, %s - %s\n",
+		chg.Height, changeType(chg.Type), chg.ClaimID, chg.Amount, chg.OutPoint, chg.Name)
+}
+
+func showClaim(c *node.Claim, n *node.Node) {
+	mark := " "
+	if c == n.BestClaim {
+		mark = "*"
+	}
+
+	fmt.Printf("%s  C  ID: %s, TXO: %s\n   %5d/%-5d, Status: %9s, Amount: %15d, Support Amount: %15d\n",
+		mark, c.ClaimID, c.OutPoint, c.AcceptedAt, c.ActiveAt, status[c.Status], c.Amount, n.SupportSums[c.ClaimID.Key()])
+}
+
+func showSupport(c *node.Claim) {
+	fmt.Printf("    S id: %s, op: %s, %5d/%-5d, %9s, amt: %15d\n",
+		c.ClaimID, c.OutPoint, c.AcceptedAt, c.ActiveAt, status[c.Status], c.Amount)
+}
+
+func showNode(n *node.Node) {
+
+	fmt.Printf("%s\n", strings.Repeat("-", 200))
+	fmt.Printf("Last Node Takeover: %d\n\n", n.TakenOverAt)
+	n.SortClaimsByBid()
+	for _, c := range n.Claims {
+		showClaim(c, n)
+		for _, s := range n.Supports {
+			if s.ClaimID != c.ClaimID {
+				continue
+			}
+			showSupport(s)
+		}
+	}
+	fmt.Printf("\n\n")
+}
+
+func showTemporalNames(height int32, names [][]byte) {
+	fmt.Printf("%7d: %q", height, names[0])
+	for _, name := range names[1:] {
+		fmt.Printf(", %q ", name)
+	}
+	fmt.Printf("\n")
+}

claimtrie/cmd/main.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	"github.com/btcsuite/btcd/claimtrie/cmd/cmd"
+)
+
+func main() {
+	cmd.Execute()
+}

claimtrie/config/config.go

@@ -0,0 +1,47 @@
+package config
+
+import (
+	"path/filepath"
+
+	"github.com/btcsuite/btcd/claimtrie/param"
+	"github.com/btcsuite/btcutil"
+)
+
+var DefaultConfig = Config{
+	Params: param.MainNet,
+
+	RamTrie: true, // as it stands the other trie uses more RAM, more time, and 40GB+ of disk space
+
+	DataDir: filepath.Join(btcutil.AppDataDir("chain", false), "data"),
+
+	BlockRepoPebble: pebbleConfig{
+		Path: "blocks_pebble_db",
+	},
+	NodeRepoPebble: pebbleConfig{
+		Path: "node_change_pebble_db",
+	},
+	TemporalRepoPebble: pebbleConfig{
+		Path: "temporal_pebble_db",
+	},
+	MerkleTrieRepoPebble: pebbleConfig{
+		Path: "merkletrie_pebble_db",
+	},
+}
+
+// Config is the container of all configurations.
+type Config struct {
+	Params param.ClaimTrieParams
+
+	RamTrie bool
+
+	DataDir string
+
+	BlockRepoPebble      pebbleConfig
+	NodeRepoPebble       pebbleConfig
+	TemporalRepoPebble   pebbleConfig
+	MerkleTrieRepoPebble pebbleConfig
+}
+
+type pebbleConfig struct {
+	Path string
+}

claimtrie/merkletrie/collapsedtrie.go

@@ -0,0 +1,235 @@
+package merkletrie
+
+import (
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+)
+
+type KeyType []byte
+
+type collapsedVertex struct { // implements sort.Interface
+	children   []*collapsedVertex
+	key        KeyType
+	merkleHash *chainhash.Hash
+	claimHash  *chainhash.Hash
+}
+
+// insertAt inserts v into s at index i and returns the new slice.
+// https://stackoverflow.com/questions/42746972/golang-insert-to-a-sorted-slice
+func insertAt(data []*collapsedVertex, i int, v *collapsedVertex) []*collapsedVertex {
+	if i == len(data) {
+		// Insert at end is the easy case.
+		return append(data, v)
+	}
+
+	// Make space for the inserted element by shifting
+	// values at the insertion index up one index. The call
+	// to append does not allocate memory when cap(data) is
+	// greater than len(data).
+	data = append(data[:i+1], data[i:]...)
+	data[i] = v
+	return data
+}
+
+func (ptn *collapsedVertex) Insert(value *collapsedVertex) *collapsedVertex {
+	// keep it sorted (and sort.Sort is too slow)
+	index := sortSearch(ptn.children, value.key[0])
+	ptn.children = insertAt(ptn.children, index, value)
+
+	return value
+}
+
+// this sort.Search is stolen shamelessly from search.go,
+// and modified for performance to not need a closure
+func sortSearch(nodes []*collapsedVertex, b byte) int {
+	i, j := 0, len(nodes)
+	for i < j {
+		h := int(uint(i+j) >> 1) // avoid overflow when computing h
+		// i ≤ h < j
+		if nodes[h].key[0] < b {
+			i = h + 1 // preserves f(i-1) == false
+		} else {
+			j = h // preserves f(j) == true
+		}
+	}
+	// i == j, f(i-1) == false, and f(j) (= f(i)) == true  =>  answer is i.
+	return i
+}
+
+func (ptn *collapsedVertex) findNearest(key KeyType) (int, *collapsedVertex) {
+	// none of the children overlap on the first char or we would have a parent node with that char
+	index := sortSearch(ptn.children, key[0])
+	hits := ptn.children[index:]
+	if len(hits) > 0 {
+		return index, hits[0]
+	}
+	return -1, nil
+}
+
+type collapsedTrie struct {
+	Root  *collapsedVertex
+	Nodes int
+}
+
+func NewCollapsedTrie() *collapsedTrie {
+	// we never delete the Root node
+	return &collapsedTrie{Root: &collapsedVertex{key: make(KeyType, 0)}, Nodes: 1}
+}
+
+func (pt *collapsedTrie) NodeCount() int {
+	return pt.Nodes
+}
+
+func matchLength(a, b KeyType) int {
+	minLen := len(a)
+	if len(b) < minLen {
+		minLen = len(b)
+	}
+	for i := 0; i < minLen; i++ {
+		if a[i] != b[i] {
+			return i
+		}
+	}
+	return minLen
+}
+
+func (pt *collapsedTrie) insert(value KeyType, node *collapsedVertex) (bool, *collapsedVertex) {
+	index, child := node.findNearest(value)
+	match := 0
+	if index >= 0 { // if we found a child
+		child.merkleHash = nil
+		match = matchLength(value, child.key)
+		if len(value) == match && len(child.key) == match {
+			return false, child
+		}
+	}
+	if match <= 0 {
+		pt.Nodes++
+		return true, node.Insert(&collapsedVertex{key: value})
+	}
+	if match < len(child.key) {
+		grandChild := collapsedVertex{key: child.key[match:], children: child.children,
+			claimHash: child.claimHash, merkleHash: child.merkleHash}
+		newChild := collapsedVertex{key: child.key[0:match], children: []*collapsedVertex{&grandChild}}
+		child = &newChild
+		node.children[index] = child
+		pt.Nodes++
+		if len(value) == match {
+			return true, child
+		}
+	}
+	return pt.insert(value[match:], child)
+}
+
+func (pt *collapsedTrie) InsertOrFind(value KeyType) (bool, *collapsedVertex) {
+	pt.Root.merkleHash = nil
+	if len(value) <= 0 {
+		return false, pt.Root
+	}
+
+	// we store the name so we need to make our own copy of it
+	// this avoids errors where this function is called via the DB iterator
+	v2 := make([]byte, len(value))
+	copy(v2, value)
+	return pt.insert(v2, pt.Root)
+}
+
+func find(value KeyType, node *collapsedVertex, pathIndexes *[]int, path *[]*collapsedVertex) *collapsedVertex {
+	index, child := node.findNearest(value)
+	if index < 0 {
+		return nil
+	}
+	match := matchLength(value, child.key)
+	if len(value) == match && len(child.key) == match {
+		if pathIndexes != nil {
+			*pathIndexes = append(*pathIndexes, index)
+		}
+		if path != nil {
+			*path = append(*path, child)
+		}
+		return child
+	}
+	if match < len(child.key) || match == len(value) {
+		return nil
+	}
+	if pathIndexes != nil {
+		*pathIndexes = append(*pathIndexes, index)
+	}
+	if path != nil {
+		*path = append(*path, child)
+	}
+	return find(value[match:], child, pathIndexes, path)
+}
+
+func (pt *collapsedTrie) Find(value KeyType) *collapsedVertex {
+	if len(value) <= 0 {
+		return pt.Root
+	}
+	return find(value, pt.Root, nil, nil)
+}
+
+func (pt *collapsedTrie) FindPath(value KeyType) ([]int, []*collapsedVertex) {
+	pathIndexes := []int{-1}
+	path := []*collapsedVertex{pt.Root}
+	if len(value) > 0 {
+		result := find(value, pt.Root, &pathIndexes, &path)
+		if result == nil { // not sure I want this line
+			return nil, nil
+		}
+	}
+	return pathIndexes, path
+}
+
+// IterateFrom can be used to find a value and run a function on that value.
+// If the handler returns true it continues to iterate through the children of value.
+func (pt *collapsedTrie) IterateFrom(start KeyType, handler func(name KeyType, value *collapsedVertex) bool) {
+	node := find(start, pt.Root, nil, nil)
+	if node == nil {
+		return
+	}
+	iterateFrom(start, node, handler)
+}
+
+func iterateFrom(name KeyType, node *collapsedVertex, handler func(name KeyType, value *collapsedVertex) bool) {
+	for handler(name, node) {
+		for _, child := range node.children {
+			iterateFrom(append(name, child.key...), child, handler)
+		}
+	}
+}
+
+func (pt *collapsedTrie) Erase(value KeyType) bool {
+	indexes, path := pt.FindPath(value)
+	if path == nil || len(path) <= 1 {
+		if len(path) == 1 {
+			path[0].merkleHash = nil
+			path[0].claimHash = nil
+		}
+		return false
+	}
+	nodes := pt.Nodes
+	i := len(path) - 1
+	path[i].claimHash = nil // this is the thing we are erasing; the rest is book-keeping
+	for ; i > 0; i-- {
+		childCount := len(path[i].children)
+		noClaimData := path[i].claimHash == nil
+		path[i].merkleHash = nil
+		if childCount == 1 && noClaimData {
+			path[i].key = append(path[i].key, path[i].children[0].key...)
+			path[i].claimHash = path[i].children[0].claimHash
+			path[i].children = path[i].children[0].children
+			pt.Nodes--
+			continue
+		}
+		if childCount == 0 && noClaimData {
+			index := indexes[i]
+			path[i-1].children = append(path[i-1].children[:index], path[i-1].children[index+1:]...)
+			pt.Nodes--
+			continue
+		}
+		break
+	}
+	for ; i >= 0; i-- {
+		path[i].merkleHash = nil
+	}
+	return nodes > pt.Nodes
+}

claimtrie/merkletrie/collapsedtrie_test.go

@@ -0,0 +1,112 @@
+package merkletrie
+
+import (
+	"bytes"
+	"github.com/stretchr/testify/assert"
+	"math/rand"
+	"testing"
+	"time"
+)
+
+func b(value string) []byte      { return []byte(value) }
+func eq(x []byte, y string) bool { return bytes.Equal(x, b(y)) }
+
+func TestInsertAndErase(t *testing.T) {
+	trie := NewCollapsedTrie()
+	assert.True(t, trie.NodeCount() == 1)
+	inserted, node := trie.InsertOrFind(b("abc"))
+	assert.True(t, inserted)
+	assert.NotNil(t, node)
+	assert.Equal(t, 2, trie.NodeCount())
+	inserted, node = trie.InsertOrFind(b("abd"))
+	assert.True(t, inserted)
+	assert.Equal(t, 4, trie.NodeCount())
+	assert.NotNil(t, node)
+	hit := trie.Find(b("ab"))
+	assert.True(t, eq(hit.key, "ab"))
+	assert.Equal(t, 2, len(hit.children))
+	hit = trie.Find(b("abc"))
+	assert.True(t, eq(hit.key, "c"))
+	hit = trie.Find(b("abd"))
+	assert.True(t, eq(hit.key, "d"))
+	hit = trie.Find(b("a"))
+	assert.Nil(t, hit)
+	indexes, path := trie.FindPath(b("abd"))
+	assert.Equal(t, 3, len(indexes))
+	assert.True(t, eq(path[1].key, "ab"))
+	erased := trie.Erase(b("ab"))
+	assert.False(t, erased)
+	assert.Equal(t, 4, trie.NodeCount())
+	erased = trie.Erase(b("abc"))
+	assert.True(t, erased)
+	assert.Equal(t, 2, trie.NodeCount())
+	erased = trie.Erase(b("abd"))
+	assert.True(t, erased)
+	assert.Equal(t, 1, trie.NodeCount())
+}
+
+func TestNilNameHandling(t *testing.T) {
+	trie := NewCollapsedTrie()
+	inserted, n := trie.InsertOrFind([]byte("test"))
+	assert.True(t, inserted)
+	n.claimHash = EmptyTrieHash
+	inserted, n = trie.InsertOrFind(nil)
+	assert.False(t, inserted)
+	n.claimHash = EmptyTrieHash
+	n.merkleHash = EmptyTrieHash
+	inserted, n = trie.InsertOrFind(nil)
+	assert.False(t, inserted)
+	assert.NotNil(t, n.claimHash)
+	assert.Nil(t, n.merkleHash)
+	nodeRemoved := trie.Erase(nil)
+	assert.False(t, nodeRemoved)
+	inserted, n = trie.InsertOrFind(nil)
+	assert.False(t, inserted)
+	assert.Nil(t, n.claimHash)
+}
+
+func TestCollapsedTriePerformance(t *testing.T) {
+	inserts := 10000 // increase this to 1M for more interesting results
+	data := make([][]byte, inserts)
+	rand.Seed(42)
+	for i := 0; i < inserts; i++ {
+		size := rand.Intn(70) + 4
+		data[i] = make([]byte, size)
+		rand.Read(data[i])
+		for j := 0; j < size; j++ {
+			data[i][j] %= byte(62) // shrink the range to match the old test
+		}
+	}
+
+	trie := NewCollapsedTrie()
+	// doing my own timing because I couldn't get the B.Run method to work:
+	start := time.Now()
+	for i := 0; i < inserts; i++ {
+		_, node := trie.InsertOrFind(data[i])
+		assert.NotNil(t, node, "Failure at %d of %d", i, inserts)
+	}
+	t.Logf("Insertion in %f sec.", time.Since(start).Seconds())
+
+	start = time.Now()
+	for i := 0; i < inserts; i++ {
+		node := trie.Find(data[i])
+		assert.True(t, bytes.HasSuffix(data[i], node.key), "Failure on %d of %d", i, inserts)
+	}
+	t.Logf("Lookup in %f sec. on %d nodes.", time.Since(start).Seconds(), trie.NodeCount())
+
+	start = time.Now()
+	for i := 0; i < inserts; i++ {
+		indexes, path := trie.FindPath(data[i])
+		assert.True(t, len(indexes) == len(path))
+		assert.True(t, len(path) > 1)
+		assert.True(t, bytes.HasSuffix(data[i], path[len(path)-1].key))
+	}
+	t.Logf("Parents in %f sec.", time.Since(start).Seconds())
+
+	start = time.Now()
+	for i := 0; i < inserts; i++ {
+		trie.Erase(data[i])
+	}
+	t.Logf("Deletion in %f sec.", time.Since(start).Seconds())
+	assert.Equal(t, 1, trie.NodeCount())
+}

claimtrie/merkletrie/merkletrie.go

@@ -0,0 +1,278 @@
+package merkletrie
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/pkg/errors"
+	"runtime"
+	"sort"
+	"sync"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/claimtrie/node"
+)
+
+var (
+	// EmptyTrieHash represents the Merkle Hash of an empty PersistentTrie.
+	// "0000000000000000000000000000000000000000000000000000000000000001"
+	EmptyTrieHash  = &chainhash.Hash{1}
+	NoChildrenHash = &chainhash.Hash{2}
+	NoClaimsHash   = &chainhash.Hash{3}
+)
+
+// ValueStore enables PersistentTrie to query node values from different implementations.
+type ValueStore interface {
+	Hash(name []byte) *chainhash.Hash
+	IterateNames(predicate func(name []byte) bool)
+}
+
+// PersistentTrie implements a 256-way prefix tree.
+type PersistentTrie struct {
+	store ValueStore
+	repo  Repo
+
+	root *vertex
+	bufs *sync.Pool
+}
+
+// NewPersistentTrie returns a PersistentTrie.
+func NewPersistentTrie(store ValueStore, repo Repo) *PersistentTrie {
+
+	tr := &PersistentTrie{
+		store: store,
+		repo:  repo,
+		bufs: &sync.Pool{
+			New: func() interface{} {
+				return new(bytes.Buffer)
+			},
+		},
+		root: newVertex(EmptyTrieHash),
+	}
+
+	return tr
+}
+
+// SetRoot drops all resolved nodes in the PersistentTrie, and set the Root with specified hash.
+func (t *PersistentTrie) SetRoot(h *chainhash.Hash, names [][]byte) {
+	t.root = newVertex(h)
+	runtime.GC()
+}
+
+// Update updates the nodes along the path to the key.
+// Each node is resolved or created with their Hash cleared.
+func (t *PersistentTrie) Update(name []byte, restoreChildren bool) {
+
+	n := t.root
+	for i, ch := range name {
+		if restoreChildren && len(n.childLinks) == 0 {
+			t.resolveChildLinks(n, name[:i])
+		}
+		if n.childLinks[ch] == nil {
+			n.childLinks[ch] = newVertex(nil)
+		}
+		n.merkleHash = nil
+		n = n.childLinks[ch]
+	}
+
+	if restoreChildren && len(n.childLinks) == 0 {
+		t.resolveChildLinks(n, name)
+	}
+	n.hasValue = true
+	n.merkleHash = nil
+	n.claimsHash = nil
+}
+
+// resolveChildLinks updates the links on n
+func (t *PersistentTrie) resolveChildLinks(n *vertex, key []byte) {
+
+	if n.merkleHash == nil {
+		return
+	}
+
+	b := t.bufs.Get().(*bytes.Buffer)
+	defer t.bufs.Put(b)
+	b.Reset()
+	b.Write(key)
+	b.Write(n.merkleHash[:])
+
+	result, closer, err := t.repo.Get(b.Bytes())
+	if result == nil {
+		return
+	} else if err != nil {
+		panic(err)
+	}
+	defer closer.Close()
+
+	nb := nbuf(result)
+	n.hasValue, n.claimsHash = nb.hasValue()
+	for i := 0; i < nb.entries(); i++ {
+		p, h := nb.entry(i)
+		n.childLinks[p] = newVertex(h)
+	}
+}
+
+// MerkleHash returns the Merkle Hash of the PersistentTrie.
+// All nodes must have been resolved before calling this function.
+func (t *PersistentTrie) MerkleHash() *chainhash.Hash {
+	buf := make([]byte, 0, 256)
+	if h := t.merkle(buf, t.root); h == nil {
+		return EmptyTrieHash
+	}
+	return t.root.merkleHash
+}
+
+// merkle recursively resolves the hashes of the node.
+// All nodes must have been resolved before calling this function.
+func (t *PersistentTrie) merkle(prefix []byte, v *vertex) *chainhash.Hash {
+	if v.merkleHash != nil {
+		return v.merkleHash
+	}
+
+	b := t.bufs.Get().(*bytes.Buffer)
+	defer t.bufs.Put(b)
+	b.Reset()
+
+	keys := keysInOrder(v)
+
+	for _, ch := range keys {
+		child := v.childLinks[ch]
+		if child == nil {
+			continue
+		}
+		p := append(prefix, ch)
+		h := t.merkle(p, child)
+		if h != nil {
+			b.WriteByte(ch) // nolint : errchk
+			b.Write(h[:])   // nolint : errchk
+		}
+		if h == nil || len(prefix) > 4 { // TODO: determine the right number here
+			delete(v.childLinks, ch) // keep the RAM down (they get recreated on Update)
+		}
+	}
+
+	if v.hasValue {
+		claimHash := v.claimsHash
+		if claimHash == nil {
+			claimHash = t.store.Hash(prefix)
+			v.claimsHash = claimHash
+		}
+		if claimHash != nil {
+			b.Write(claimHash[:])
+		} else {
+			v.hasValue = false
+		}
+	}
+
+	if b.Len() > 0 {
+		h := chainhash.DoubleHashH(b.Bytes())
+		v.merkleHash = &h
+		t.repo.Set(append(prefix, h[:]...), b.Bytes())
+	}
+
+	return v.merkleHash
+}
+
+func keysInOrder(v *vertex) []byte {
+	keys := make([]byte, 0, len(v.childLinks))
+	for key := range v.childLinks {
+		keys = append(keys, key)
+	}
+	sort.Slice(keys, func(i, j int) bool { return keys[i] < keys[j] })
+	return keys
+}
+
+func (t *PersistentTrie) MerkleHashAllClaims() *chainhash.Hash {
+	buf := make([]byte, 0, 256)
+	if h := t.merkleAllClaims(buf, t.root); h == nil {
+		return EmptyTrieHash
+	}
+	return t.root.merkleHash
+}
+
+func (t *PersistentTrie) merkleAllClaims(prefix []byte, v *vertex) *chainhash.Hash {
+	if v.merkleHash != nil {
+		return v.merkleHash
+	}
+	b := t.bufs.Get().(*bytes.Buffer)
+	defer t.bufs.Put(b)
+	b.Reset()
+
+	keys := keysInOrder(v)
+	childHashes := make([]*chainhash.Hash, 0, len(keys))
+	for _, ch := range keys {
+		n := v.childLinks[ch]
+		if n == nil {
+			continue
+		}
+		p := append(prefix, ch)
+		h := t.merkleAllClaims(p, n)
+		if h != nil {
+			childHashes = append(childHashes, h)
+			b.WriteByte(ch) // nolint : errchk
+			b.Write(h[:])   // nolint : errchk
+		}
+		if h == nil || len(prefix) > 4 { // TODO: determine the right number here
+			delete(v.childLinks, ch) // keep the RAM down (they get recreated on Update)
+		}
+	}
+
+	if v.hasValue {
+		if v.claimsHash == nil {
+			v.claimsHash = t.store.Hash(prefix)
+			v.hasValue = v.claimsHash != nil
+		}
+	}
+
+	if len(childHashes) > 1 || v.claimsHash != nil { // yeah, about that 1 there -- old code used the condensed trie
+		left := NoChildrenHash
+		if len(childHashes) > 0 {
+			left = node.ComputeMerkleRoot(childHashes)
+		}
+		right := NoClaimsHash
+		if v.claimsHash != nil {
+			b.Write(v.claimsHash[:]) // for Has Value, nolint : errchk
+			right = v.claimsHash
+		}
+
+		h := node.HashMerkleBranches(left, right)
+		v.merkleHash = h
+		t.repo.Set(append(prefix, h[:]...), b.Bytes())
+	} else if len(childHashes) == 1 {
+		v.merkleHash = childHashes[0] // pass it up the tree
+		t.repo.Set(append(prefix, v.merkleHash[:]...), b.Bytes())
+	}
+
+	return v.merkleHash
+}
+
+func (t *PersistentTrie) Close() error {
+	return errors.WithStack(t.repo.Close())
+}
+
+func (t *PersistentTrie) Dump(s string) {
+	// TODO: this function is in the wrong spot; either it goes with its caller or it needs to be a generic iterator
+	// we don't want fmt used in here either way
+
+	v := t.root
+
+	for i := 0; i < len(s); i++ {
+		t.resolveChildLinks(v, []byte(s[:i]))
+		ch := s[i]
+		v = v.childLinks[ch]
+		if v == nil {
+			fmt.Printf("Missing child at %s\n", s[:i+1])
+			return
+		}
+	}
+	t.resolveChildLinks(v, []byte(s))
+
+	fmt.Printf("Node hash: %s, has value: %t\n", v.merkleHash.String(), v.hasValue)
+
+	for key, value := range v.childLinks {
+		fmt.Printf("  Child %s hash: %s\n", string(key), value.merkleHash.String())
+	}
+}
+
+func (t *PersistentTrie) Flush() error {
+	return t.repo.Flush()
+}

claimtrie/merkletrie/merkletrie_test.go

@@ -0,0 +1,25 @@
+package merkletrie
+
+import (
+	"testing"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/claimtrie/node"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestName(t *testing.T) {
+
+	r := require.New(t)
+
+	target, _ := chainhash.NewHashFromStr("e9ffb584c62449f157c8be88257bd1eebb2d8ef824f5c86b43c4f8fd9e800d6a")
+
+	data := []*chainhash.Hash{EmptyTrieHash}
+	root := node.ComputeMerkleRoot(data)
+	r.True(EmptyTrieHash.IsEqual(root))
+
+	data = append(data, NoChildrenHash, NoClaimsHash)
+	root = node.ComputeMerkleRoot(data)
+	r.True(target.IsEqual(root))
+}

claimtrie/merkletrie/merkletrierepo/pebble.go

@@ -0,0 +1,66 @@
+package merkletrierepo
+
+import (
+	"github.com/cockroachdb/pebble"
+	"github.com/pkg/errors"
+	"io"
+)
+
+type Pebble struct {
+	db *pebble.DB
+}
+
+func NewPebble(path string) (*Pebble, error) {
+
+	cache := pebble.NewCache(512 << 20)
+	//defer cache.Unref()
+	//
+	//go func() {
+	//	tick := time.NewTicker(60 * time.Second)
+	//	for range tick.C {
+	//
+	//		m := cache.Metrics()
+	//		fmt.Printf("cnt: %s, objs: %s, hits: %s, miss: %s, hitrate: %.2f\n",
+	//			humanize.Bytes(uint64(m.Size)),
+	//			humanize.Comma(m.Count),
+	//			humanize.Comma(m.Hits),
+	//			humanize.Comma(m.Misses),
+	//			float64(m.Hits)/float64(m.Hits+m.Misses))
+	//
+	//	}
+	//}()
+
+	db, err := pebble.Open(path, &pebble.Options{Cache: cache, BytesPerSync: 32 << 20})
+	repo := &Pebble{db: db}
+
+	return repo, errors.Wrapf(err, "unable to open %s", path)
+}
+
+func (repo *Pebble) Get(key []byte) ([]byte, io.Closer, error) {
+	d, c, e := repo.db.Get(key)
+	if e == pebble.ErrNotFound {
+		return nil, c, nil
+	}
+	return d, c, e
+}
+
+func (repo *Pebble) Set(key, value []byte) error {
+	return repo.db.Set(key, value, pebble.NoSync)
+}
+
+func (repo *Pebble) Close() error {
+
+	err := repo.db.Flush()
+	if err != nil {
+		// if we fail to close are we going to try again later?
+		return errors.Wrap(err, "on flush")
+	}
+
+	err = repo.db.Close()
+	return errors.Wrap(err, "on close")
+}
+
+func (repo *Pebble) Flush() error {
+	_, err := repo.db.AsyncFlush()
+	return err
+}

claimtrie/merkletrie/ramtrie.go

@@ -0,0 +1,163 @@
+package merkletrie
+
+import (
+	"bytes"
+	"runtime"
+	"strconv"
+	"sync"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/claimtrie/node"
+)
+
+type MerkleTrie interface {
+	SetRoot(h *chainhash.Hash, names [][]byte)
+	Update(name []byte, restoreChildren bool)
+	MerkleHash() *chainhash.Hash
+	MerkleHashAllClaims() *chainhash.Hash
+	Flush() error
+}
+
+type RamTrie struct {
+	collapsedTrie
+	store ValueStore
+	bufs  *sync.Pool
+}
+
+func NewRamTrie(s ValueStore) *RamTrie {
+	return &RamTrie{
+		store: s,
+		bufs: &sync.Pool{
+			New: func() interface{} {
+				return new(bytes.Buffer)
+			},
+		},
+		collapsedTrie: collapsedTrie{Root: &collapsedVertex{}},
+	}
+}
+
+func (rt *RamTrie) SetRoot(h *chainhash.Hash, names [][]byte) {
+	if rt.Root.merkleHash.IsEqual(h) {
+		runtime.GC()
+		return
+	}
+
+	// if names is nil then we need to query all names
+	if names == nil {
+		node.LogOnce("Building the entire claim trie in RAM...") // could put this in claimtrie.go
+
+		//should technically clear the old trie first:
+		if rt.Nodes > 1 {
+			rt.Root = &collapsedVertex{key: make(KeyType, 0)}
+			rt.Nodes = 1
+			runtime.GC()
+		}
+
+		c := 0
+		rt.store.IterateNames(func(name []byte) bool {
+			rt.Update(name, false)
+			c++
+			return true
+		})
+
+		node.LogOnce("Completed claim trie construction. Name count: " + strconv.Itoa(c))
+	} else {
+		for _, name := range names {
+			rt.Update(name, false)
+		}
+	}
+	runtime.GC()
+}
+
+func (rt *RamTrie) Update(name []byte, _ bool) {
+	h := rt.store.Hash(name)
+	if h == nil {
+		rt.Erase(name)
+	} else {
+		_, n := rt.InsertOrFind(name)
+		n.claimHash = h
+	}
+}
+
+func (rt *RamTrie) MerkleHash() *chainhash.Hash {
+	if h := rt.merkleHash(rt.Root); h == nil {
+		return EmptyTrieHash
+	}
+	return rt.Root.merkleHash
+}
+
+func (rt *RamTrie) merkleHash(v *collapsedVertex) *chainhash.Hash {
+	if v.merkleHash != nil {
+		return v.merkleHash
+	}
+
+	b := rt.bufs.Get().(*bytes.Buffer)
+	defer rt.bufs.Put(b)
+	b.Reset()
+
+	for _, ch := range v.children {
+		h := rt.merkleHash(ch)              // h is a pointer; don't destroy its data
+		b.WriteByte(ch.key[0])              // nolint : errchk
+		b.Write(rt.completeHash(h, ch.key)) // nolint : errchk
+	}
+
+	if v.claimHash != nil {
+		b.Write(v.claimHash[:])
+	}
+
+	if b.Len() > 0 {
+		h := chainhash.DoubleHashH(b.Bytes())
+		v.merkleHash = &h
+	}
+
+	return v.merkleHash
+}
+
+func (rt *RamTrie) completeHash(h *chainhash.Hash, childKey KeyType) []byte {
+	var data [chainhash.HashSize + 1]byte
+	copy(data[1:], h[:])
+	for i := len(childKey) - 1; i > 0; i-- {
+		data[0] = childKey[i]
+		copy(data[1:], chainhash.DoubleHashB(data[:]))
+	}
+	return data[1:]
+}
+
+func (rt *RamTrie) MerkleHashAllClaims() *chainhash.Hash {
+	if h := rt.merkleHashAllClaims(rt.Root); h == nil {
+		return EmptyTrieHash
+	}
+	return rt.Root.merkleHash
+}
+
+func (rt *RamTrie) merkleHashAllClaims(v *collapsedVertex) *chainhash.Hash {
+	if v.merkleHash != nil {
+		return v.merkleHash
+	}
+
+	childHashes := make([]*chainhash.Hash, 0, len(v.children))
+	for _, ch := range v.children {
+		h := rt.merkleHashAllClaims(ch)
+		childHashes = append(childHashes, h)
+	}
+
+	claimHash := NoClaimsHash
+	if v.claimHash != nil {
+		claimHash = v.claimHash
+	} else if len(childHashes) == 0 {
+		return nil
+	}
+
+	childHash := NoChildrenHash
+	if len(childHashes) > 0 {
+		// this shouldn't be referencing node; where else can we put this merkle root func?
+		childHash = node.ComputeMerkleRoot(childHashes)
+	}
+
+	v.merkleHash = node.HashMerkleBranches(childHash, claimHash)
+	return v.merkleHash
+}
+
+func (rt *RamTrie) Flush() error {
+	return nil
+}

claimtrie/merkletrie/repo.go

@@ -0,0 +1,13 @@
+package merkletrie
+
+import (
+	"io"
+)
+
+// Repo defines APIs for PersistentTrie to access persistence layer.
+type Repo interface {
+	Get(key []byte) ([]byte, io.Closer, error)
+	Set(key, value []byte) error
+	Close() error
+	Flush() error
+}

claimtrie/merkletrie/vertex.go

@@ -0,0 +1,44 @@
+package merkletrie
+
+import (
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+)
+
+type vertex struct {
+	merkleHash *chainhash.Hash
+	claimsHash *chainhash.Hash
+	childLinks map[byte]*vertex
+	hasValue   bool
+}
+
+func newVertex(hash *chainhash.Hash) *vertex {
+	return &vertex{childLinks: map[byte]*vertex{}, merkleHash: hash}
+}
+
+// TODO: more professional to use msgpack here?
+
+// nbuf decodes the on-disk format of a node, which has the following form:
+//   ch(1B) hash(32B)
+//   ...
+//   ch(1B) hash(32B)
+//   vhash(32B)
+type nbuf []byte
+
+func (nb nbuf) entries() int {
+	return len(nb) / 33
+}
+
+func (nb nbuf) entry(i int) (byte, *chainhash.Hash) {
+	h := chainhash.Hash{}
+	copy(h[:], nb[33*i+1:])
+	return nb[33*i], &h
+}
+
+func (nb nbuf) hasValue() (bool, *chainhash.Hash) {
+	if len(nb)%33 == 0 {
+		return false, nil
+	}
+	h := chainhash.Hash{}
+	copy(h[:], nb[len(nb)-32:])
+	return true, &h
+}

claimtrie/node/claim.go

@@ -0,0 +1,92 @@
+package node
+
+import (
+	"bytes"
+	"strconv"
+	"strings"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/param"
+	"github.com/btcsuite/btcd/wire"
+)
+
+type Status int
+
+const (
+	Accepted Status = iota
+	Activated
+	Deactivated
+)
+
+// Claim defines a structure of stake, which could be a Claim or Support.
+type Claim struct {
+	OutPoint wire.OutPoint
+	ClaimID  change.ClaimID
+	Amount   int64
+	// CreatedAt  int32 // the very first block, unused at present
+	AcceptedAt int32 // the latest update height
+	ActiveAt   int32 // AcceptedAt + actual delay
+	VisibleAt  int32
+
+	Status   Status `msgpack:",omitempty"`
+	Sequence int32  `msgpack:",omitempty"`
+}
+
+func (c *Claim) setOutPoint(op wire.OutPoint) *Claim {
+	c.OutPoint = op
+	return c
+}
+
+func (c *Claim) SetAmt(amt int64) *Claim {
+	c.Amount = amt
+	return c
+}
+
+func (c *Claim) setAccepted(height int32) *Claim {
+	c.AcceptedAt = height
+	return c
+}
+
+func (c *Claim) setActiveAt(height int32) *Claim {
+	c.ActiveAt = height
+	return c
+}
+
+func (c *Claim) setStatus(status Status) *Claim {
+	c.Status = status
+	return c
+}
+
+func (c *Claim) ExpireAt() int32 {
+
+	if c.AcceptedAt+param.ActiveParams.OriginalClaimExpirationTime > param.ActiveParams.ExtendedClaimExpirationForkHeight {
+		return c.AcceptedAt + param.ActiveParams.ExtendedClaimExpirationTime
+	}
+
+	return c.AcceptedAt + param.ActiveParams.OriginalClaimExpirationTime
+}
+
+func OutPointLess(a, b wire.OutPoint) bool {
+
+	switch cmp := bytes.Compare(a.Hash[:], b.Hash[:]); {
+	case cmp < 0:
+		return true
+	case cmp > 0:
+		return false
+	default:
+		return a.Index < b.Index
+	}
+}
+
+func NewOutPointFromString(str string) *wire.OutPoint {
+
+	f := strings.Split(str, ":")
+	if len(f) != 2 {
+		return nil
+	}
+	hash, _ := chainhash.NewHashFromStr(f[0])
+	idx, _ := strconv.Atoi(f[1])
+
+	return wire.NewOutPoint(hash, uint32(idx))
+}

claimtrie/node/claim_list.go

@@ -0,0 +1,33 @@
+package node
+
+import (
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/wire"
+)
+
+type ClaimList []*Claim
+
+type comparator func(c *Claim) bool
+
+func byID(id change.ClaimID) comparator {
+	return func(c *Claim) bool {
+		return c.ClaimID == id
+	}
+}
+
+func byOut(out wire.OutPoint) comparator {
+	return func(c *Claim) bool {
+		return c.OutPoint == out // assuming value comparison
+	}
+}
+
+func (l ClaimList) find(cmp comparator) *Claim {
+
+	for i := range l {
+		if cmp(l[i]) {
+			return l[i]
+		}
+	}
+
+	return nil
+}

claimtrie/node/hashfunc.go

@@ -0,0 +1,29 @@
+package node
+
+import "github.com/btcsuite/btcd/chaincfg/chainhash"
+
+func HashMerkleBranches(left *chainhash.Hash, right *chainhash.Hash) *chainhash.Hash {
+	// Concatenate the left and right nodes.
+	var hash [chainhash.HashSize * 2]byte
+	copy(hash[:chainhash.HashSize], left[:])
+	copy(hash[chainhash.HashSize:], right[:])
+
+	newHash := chainhash.DoubleHashH(hash[:])
+	return &newHash
+}
+
+func ComputeMerkleRoot(hashes []*chainhash.Hash) *chainhash.Hash {
+	if len(hashes) <= 0 {
+		return nil
+	}
+	for len(hashes) > 1 {
+		if (len(hashes) & 1) > 0 { // odd count
+			hashes = append(hashes, hashes[len(hashes)-1])
+		}
+		for i := 0; i < len(hashes); i += 2 { // TODO: parallelize this loop (or use a lib that does it)
+			hashes[i>>1] = HashMerkleBranches(hashes[i], hashes[i+1])
+		}
+		hashes = hashes[:len(hashes)>>1]
+	}
+	return hashes[0]
+}

claimtrie/node/log.go

@@ -0,0 +1,41 @@
+package node
+
+import (
+	"github.com/btcsuite/btclog"
+)
+
+// log is a logger that is initialized with no output filters.  This
+// means the package will not perform any logging by default until the caller
+// requests it.
+var log btclog.Logger
+
+// The default amount of logging is none.
+func init() {
+	DisableLog()
+}
+
+// DisableLog disables all library log output.  Logging output is disabled
+// by default until either UseLogger or SetLogWriter are called.
+func DisableLog() {
+	log = btclog.Disabled
+}
+
+// UseLogger uses a specified Logger to output package logging info.
+// This should be used in preference to SetLogWriter if the caller is also
+// using btclog.
+func UseLogger(logger btclog.Logger) {
+	log = logger
+}
+
+var loggedStrings = map[string]bool{} // is this gonna get too large?
+func LogOnce(s string) {
+	if loggedStrings[s] {
+		return
+	}
+	loggedStrings[s] = true
+	log.Info(s)
+}
+
+func Warn(s string) {
+	log.Warn(s)
+}

claimtrie/node/manager.go

@@ -0,0 +1,514 @@
+package node
+
+import (
+	"container/list"
+	"crypto/sha256"
+	"encoding/binary"
+	"fmt"
+	"sort"
+	"strconv"
+
+	"github.com/pkg/errors"
+
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/param"
+	"github.com/btcsuite/btcd/wire"
+)
+
+type Manager interface {
+	AppendChange(chg change.Change) error
+	IncrementHeightTo(height int32) ([][]byte, error)
+	DecrementHeightTo(affectedNames [][]byte, height int32) error
+	Height() int32
+	Close() error
+	NodeAt(height int32, name []byte) (*Node, error)
+	NextUpdateHeightOfNode(name []byte) ([]byte, int32)
+	IterateNames(predicate func(name []byte) bool)
+	Hash(name []byte) *chainhash.Hash
+	Flush() error
+}
+
+type nodeCacheLeaf struct {
+	node *Node
+	key  string
+}
+
+type nodeCache struct {
+	elements    map[string]*list.Element
+	data        *list.List
+	maxElements int
+}
+
+func newNodeCache(size int) *nodeCache {
+	return &nodeCache{elements: make(map[string]*list.Element, size),
+		data:        list.New(),
+		maxElements: size,
+	}
+}
+
+func (nc *nodeCache) Get(key string) *Node {
+	element := nc.elements[key]
+	if element != nil {
+		nc.data.MoveToFront(element)
+		return element.Value.(nodeCacheLeaf).node
+	}
+	return nil
+}
+
+func (nc *nodeCache) Put(key string, element *Node) {
+	existing := nc.elements[key]
+	if existing != nil {
+		existing.Value = nodeCacheLeaf{element, key}
+		nc.data.MoveToFront(existing)
+	} else if len(nc.elements) >= nc.maxElements {
+		existing = nc.data.Back()
+		delete(nc.elements, existing.Value.(nodeCacheLeaf).key)
+		existing.Value.(nodeCacheLeaf).node.Close()
+		existing.Value = nodeCacheLeaf{element, key}
+		nc.data.MoveToFront(existing)
+		nc.elements[key] = existing
+	} else {
+		nc.elements[key] = nc.data.PushFront(nodeCacheLeaf{element, key})
+	}
+}
+
+func (nc *nodeCache) Delete(key string) {
+	existing := nc.elements[key]
+	if existing != nil {
+		delete(nc.elements, key)
+		existing.Value.(nodeCacheLeaf).node.Close()
+		nc.data.Remove(existing)
+	}
+}
+
+type BaseManager struct {
+	repo Repo
+
+	height  int32
+	cache   *nodeCache
+	changes []change.Change
+}
+
+func NewBaseManager(repo Repo) (*BaseManager, error) {
+
+	nm := &BaseManager{
+		repo:  repo,
+		cache: newNodeCache(param.ActiveParams.MaxNodeManagerCacheSize),
+	}
+
+	return nm, nil
+}
+
+func (nm *BaseManager) NodeAt(height int32, name []byte) (*Node, error) {
+
+	changes, err := nm.repo.LoadChanges(name)
+	if err != nil {
+		return nil, errors.Wrap(err, "in load changes")
+	}
+
+	n, err := nm.newNodeFromChanges(changes, height)
+	if err != nil {
+		if n != nil {
+			n.Close()
+		}
+		return nil, errors.Wrap(err, "in new node")
+	}
+
+	return n, nil
+}
+
+// Node returns a node at the current height.
+// The returned node may have pending changes.
+func (nm *BaseManager) node(name []byte) (*Node, error) {
+
+	nameStr := string(name)
+	n := nm.cache.Get(nameStr)
+	if n != nil {
+		return n.AdjustTo(nm.height, -1, name), nil
+	}
+
+	n, err := nm.NodeAt(nm.height, name)
+
+	if n != nil && err == nil {
+		nm.cache.Put(nameStr, n)
+	}
+
+	return n, err
+}
+
+// newNodeFromChanges returns a new Node constructed from the changes.
+// The changes must preserve their order received.
+func (nm *BaseManager) newNodeFromChanges(changes []change.Change, height int32) (*Node, error) {
+
+	if len(changes) == 0 {
+		return nil, nil
+	}
+
+	n := New()
+	previous := changes[0].Height
+	count := len(changes)
+
+	for i, chg := range changes {
+		if chg.Height < previous {
+			panic("expected the changes to be in order by height")
+		}
+		if chg.Height > height {
+			count = i
+			break
+		}
+
+		if previous < chg.Height {
+			n.AdjustTo(previous, chg.Height-1, chg.Name) // update bids and activation
+			previous = chg.Height
+		}
+
+		delay := nm.getDelayForName(n, chg)
+		err := n.ApplyChange(chg, delay)
+		if err != nil {
+			n.Close()
+			return nil, errors.Wrap(err, "in apply change")
+		}
+	}
+
+	if count <= 0 {
+		n.Close()
+		return nil, nil
+	}
+	lastChange := changes[count-1]
+	return n.AdjustTo(lastChange.Height, height, lastChange.Name), nil
+}
+
+func (nm *BaseManager) AppendChange(chg change.Change) error {
+
+	nm.cache.Delete(string(chg.Name))
+	nm.changes = append(nm.changes, chg)
+
+	// worth putting in this kind of thing pre-emptively?
+	// log.Debugf("CHG: %d, %s, %v, %s, %d", chg.Height, chg.Name, chg.Type, chg.ClaimID, chg.Amount)
+
+	return nil
+}
+
+func collectChildNames(changes []change.Change) {
+	// we need to determine which children (names that start with the same name) go with which change
+	// if we have the names in order then we can avoid iterating through all names in the change list
+	// and we can possibly reuse the previous list.
+
+	// what would happen in the old code:
+	// spending a claim (which happens before every update) could remove a node from the cached trie
+	// in which case we would fall back on the data from the previous block (where it obviously wasn't spent).
+	// It would only delete the node if it had no children, but have even some rare situations
+	// Where all of the children happen to be deleted first. That's what we must detect here.
+
+	// Algorithm:
+	// For each non-spend change
+	//    Loop through all the spends before you and add them to your child list if they are your child
+
+	type pair struct {
+		name  string
+		order int
+	}
+
+	spends := make([]pair, 0, len(changes))
+	for i := range changes {
+		t := changes[i].Type
+		if t != change.SpendClaim {
+			continue
+		}
+		spends = append(spends, pair{string(changes[i].Name), i})
+	}
+	sort.Slice(spends, func(i, j int) bool {
+		return spends[i].name < spends[j].name
+	})
+
+	for i := range changes {
+		t := changes[i].Type
+		if t == change.SpendClaim || t == change.SpendSupport {
+			continue
+		}
+		a := string(changes[i].Name)
+		sc := map[string]bool{}
+		idx := sort.Search(len(spends), func(k int) bool {
+			return spends[k].name > a
+		})
+		for idx < len(spends) {
+			b := spends[idx].name
+			if len(b) <= len(a) || a != b[:len(a)] {
+				break // since they're ordered alphabetically, we should be able to break out once we're past matches
+			}
+			if spends[idx].order < i {
+				sc[b] = true
+			}
+			idx++
+		}
+		changes[i].SpentChildren = sc
+	}
+}
+
+// to understand the above function, it may be helpful to refer to the slower implementation:
+//func collectChildNamesSlow(changes []change.Change) {
+//	for i := range changes {
+//		t := changes[i].Type
+//		if t == change.SpendClaim || t == change.SpendSupport {
+//			continue
+//		}
+//		a := changes[i].Name
+//		sc := map[string]bool{}
+//		for j := 0; j < i; j++ {
+//			t = changes[j].Type
+//			if t != change.SpendClaim {
+//				continue
+//			}
+//			b := changes[j].Name
+//			if len(b) >= len(a) && bytes.Equal(a, b[:len(a)]) {
+//				sc[string(b)] = true
+//			}
+//		}
+//		changes[i].SpentChildren = sc
+//	}
+//}
+
+func (nm *BaseManager) IncrementHeightTo(height int32) ([][]byte, error) {
+
+	if height <= nm.height {
+		panic("invalid height")
+	}
+
+	if height >= param.ActiveParams.MaxRemovalWorkaroundHeight {
+		// not technically needed until block 884430, but to be true to the arbitrary rollback length...
+		collectChildNames(nm.changes)
+	}
+
+	names := make([][]byte, 0, len(nm.changes))
+	for i := range nm.changes {
+		names = append(names, nm.changes[i].Name)
+	}
+
+	if err := nm.repo.AppendChanges(nm.changes); err != nil { // destroys names
+		return nil, errors.Wrap(err, "in append changes")
+	}
+
+	// Truncate the buffer size to zero.
+	if len(nm.changes) > 1000 { // TODO: determine a good number here
+		nm.changes = nil // release the RAM
+	} else {
+		nm.changes = nm.changes[:0]
+	}
+	nm.height = height
+
+	return names, nil
+}
+
+func (nm *BaseManager) DecrementHeightTo(affectedNames [][]byte, height int32) error {
+	if height >= nm.height {
+		return errors.Errorf("invalid height of %d for %d", height, nm.height)
+	}
+
+	for _, name := range affectedNames {
+		nm.cache.Delete(string(name))
+		if err := nm.repo.DropChanges(name, height); err != nil {
+			return errors.Wrap(err, "in drop changes")
+		}
+	}
+
+	nm.height = height
+
+	return nil
+}
+
+func (nm *BaseManager) getDelayForName(n *Node, chg change.Change) int32 {
+	// Note: we don't consider the active status of BestClaim here on purpose.
+	// That's because we deactivate and reactivate as part of claim updates.
+	// However, the final status will be accounted for when we compute the takeover heights;
+	// claims may get activated early at that point.
+
+	hasBest := n.BestClaim != nil
+	if hasBest && n.BestClaim.ClaimID == chg.ClaimID {
+		return 0
+	}
+	if chg.ActiveHeight >= chg.Height { // ActiveHeight is usually unset (aka, zero)
+		return chg.ActiveHeight - chg.Height
+	}
+	if !hasBest {
+		return 0
+	}
+
+	delay := calculateDelay(chg.Height, n.TakenOverAt)
+	if delay > 0 && nm.aWorkaroundIsNeeded(n, chg) {
+		if chg.Height >= nm.height {
+			LogOnce(fmt.Sprintf("Delay workaround applies to %s at %d, ClaimID: %s",
+				chg.Name, chg.Height, chg.ClaimID))
+		}
+		return 0
+	}
+	return delay
+}
+
+func hasZeroActiveClaims(n *Node) bool {
+	// this isn't quite the same as having an active best (since that is only updated after all changes are processed)
+	for _, c := range n.Claims {
+		if c.Status == Activated {
+			return false
+		}
+	}
+	return true
+}
+
+// aWorkaroundIsNeeded handles bugs that existed in previous versions
+func (nm *BaseManager) aWorkaroundIsNeeded(n *Node, chg change.Change) bool {
+
+	if chg.Type == change.SpendClaim || chg.Type == change.SpendSupport {
+		return false
+	}
+
+	if chg.Height >= param.ActiveParams.MaxRemovalWorkaroundHeight {
+		// TODO: hard fork this out; it's a bug from previous versions:
+
+		// old 17.3 C++ code we're trying to mimic (where empty means no active claims):
+		// auto it = nodesToAddOrUpdate.find(name); // nodesToAddOrUpdate is the working changes, base is previous block
+		// auto answer = (it || (it = base->find(name))) && !it->empty() ? nNextHeight - it->nHeightOfLastTakeover : 0;
+
+		return hasZeroActiveClaims(n) && nm.hasChildren(chg.Name, chg.Height, chg.SpentChildren, 2)
+	} else if len(n.Claims) > 0 {
+		// NOTE: old code had a bug in it where nodes with no claims but with children would get left in the cache after removal.
+		// This would cause the getNumBlocksOfContinuousOwnership to return zero (causing incorrect takeover height calc).
+		w, ok := param.DelayWorkarounds[string(chg.Name)]
+		if ok {
+			for _, h := range w {
+				if chg.Height == h {
+					return true
+				}
+			}
+		}
+	}
+	return false
+}
+
+func calculateDelay(curr, tookOver int32) int32 {
+
+	delay := (curr - tookOver) / param.ActiveParams.ActiveDelayFactor
+	if delay > param.ActiveParams.MaxActiveDelay {
+		return param.ActiveParams.MaxActiveDelay
+	}
+
+	return delay
+}
+
+func (nm BaseManager) NextUpdateHeightOfNode(name []byte) ([]byte, int32) {
+
+	n, err := nm.node(name)
+	if err != nil || n == nil {
+		return name, 0
+	}
+
+	return name, n.NextUpdate()
+}
+
+func (nm *BaseManager) Height() int32 {
+	return nm.height
+}
+
+func (nm *BaseManager) Close() error {
+	return errors.WithStack(nm.repo.Close())
+}
+
+func (nm *BaseManager) hasChildren(name []byte, height int32, spentChildren map[string]bool, required int) bool {
+	c := map[byte]bool{}
+	if spentChildren == nil {
+		spentChildren = map[string]bool{}
+	}
+
+	err := nm.repo.IterateChildren(name, func(changes []change.Change) bool {
+		// if the key is unseen, generate a node for it to height
+		// if that node is active then increase the count
+		if len(changes) == 0 {
+			return true
+		}
+		if c[changes[0].Name[len(name)]] { // assuming all names here are longer than starter name
+			return true // we already checked a similar name
+		}
+		if spentChildren[string(changes[0].Name)] {
+			return true // children that are spent in the same block cannot count as active children
+		}
+		n, _ := nm.newNodeFromChanges(changes, height)
+		if n != nil {
+			defer n.Close()
+			if n.HasActiveBestClaim() {
+				c[changes[0].Name[len(name)]] = true
+				if len(c) >= required {
+					return false
+				}
+			}
+		}
+		return true
+	})
+	return err == nil && len(c) >= required
+}
+
+func (nm *BaseManager) IterateNames(predicate func(name []byte) bool) {
+	nm.repo.IterateAll(predicate)
+}
+
+func (nm *BaseManager) claimHashes(name []byte) *chainhash.Hash {
+
+	n, err := nm.node(name)
+	if err != nil || n == nil {
+		return nil
+	}
+
+	n.SortClaimsByBid()
+	claimHashes := make([]*chainhash.Hash, 0, len(n.Claims))
+	for _, c := range n.Claims {
+		if c.Status == Activated { // TODO: unit test this line
+			claimHashes = append(claimHashes, calculateNodeHash(c.OutPoint, n.TakenOverAt))
+		}
+	}
+	if len(claimHashes) > 0 {
+		return ComputeMerkleRoot(claimHashes)
+	}
+	return nil
+}
+
+func (nm *BaseManager) Hash(name []byte) *chainhash.Hash {
+
+	if nm.height >= param.ActiveParams.AllClaimsInMerkleForkHeight {
+		return nm.claimHashes(name)
+	}
+
+	n, err := nm.node(name)
+	if err != nil {
+		return nil
+	}
+	if n != nil && len(n.Claims) > 0 {
+		if n.BestClaim != nil && n.BestClaim.Status == Activated {
+			return calculateNodeHash(n.BestClaim.OutPoint, n.TakenOverAt)
+		}
+	}
+	return nil
+}
+
+func calculateNodeHash(op wire.OutPoint, takeover int32) *chainhash.Hash {
+
+	txHash := chainhash.DoubleHashH(op.Hash[:])
+
+	nOut := []byte(strconv.Itoa(int(op.Index)))
+	nOutHash := chainhash.DoubleHashH(nOut)
+
+	buf := make([]byte, 8)
+	binary.BigEndian.PutUint64(buf, uint64(takeover))
+	heightHash := chainhash.DoubleHashH(buf)
+
+	h := make([]byte, 0, sha256.Size*3)
+	h = append(h, txHash[:]...)
+	h = append(h, nOutHash[:]...)
+	h = append(h, heightHash[:]...)
+
+	hh := chainhash.DoubleHashH(h)
+
+	return &hh
+}
+
+func (nm *BaseManager) Flush() error {
+	return nm.repo.Flush()
+}

claimtrie/node/manager_test.go

@@ -0,0 +1,258 @@
+package node
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/node/noderepo"
+	"github.com/btcsuite/btcd/claimtrie/param"
+	"github.com/btcsuite/btcd/wire"
+
+	"github.com/stretchr/testify/require"
+)
+
+var (
+	out1  = NewOutPointFromString("0000000000000000000000000000000000000000000000000000000000000000:1")
+	out2  = NewOutPointFromString("0000000000000000000000000000000000000000000000000000000000000000:2")
+	out3  = NewOutPointFromString("0100000000000000000000000000000000000000000000000000000000000000:1")
+	out4  = NewOutPointFromString("0100000000000000000000000000000000000000000000000000000000000000:2")
+	name1 = []byte("name1")
+	name2 = []byte("name2")
+)
+
+// verify that we can round-trip bytes to strings
+func TestStringRoundTrip(t *testing.T) {
+
+	r := require.New(t)
+
+	data := [][]byte{
+		{97, 98, 99, 0, 100, 255},
+		{0xc3, 0x28},
+		{0xa0, 0xa1},
+		{0xe2, 0x28, 0xa1},
+		{0xf0, 0x28, 0x8c, 0x28},
+	}
+	for _, d := range data {
+		s := string(d)
+		r.Equal(s, fmt.Sprintf("%s", d)) // nolint
+		d2 := []byte(s)
+		r.Equal(len(d), len(s))
+		r.Equal(d, d2)
+	}
+}
+
+func TestSimpleAddClaim(t *testing.T) {
+
+	r := require.New(t)
+
+	param.SetNetwork(wire.TestNet)
+	repo, err := noderepo.NewPebble(t.TempDir())
+	r.NoError(err)
+
+	m, err := NewBaseManager(repo)
+	r.NoError(err)
+	defer m.Close()
+
+	_, err = m.IncrementHeightTo(10)
+	r.NoError(err)
+
+	chg := change.NewChange(change.AddClaim).SetName(name1).SetOutPoint(out1).SetHeight(11)
+	err = m.AppendChange(chg)
+	r.NoError(err)
+	_, err = m.IncrementHeightTo(11)
+	r.NoError(err)
+
+	chg = chg.SetName(name2).SetOutPoint(out2).SetHeight(12)
+	err = m.AppendChange(chg)
+	r.NoError(err)
+	_, err = m.IncrementHeightTo(12)
+	r.NoError(err)
+
+	n1, err := m.node(name1)
+	r.NoError(err)
+	r.Equal(1, len(n1.Claims))
+	r.NotNil(n1.Claims.find(byOut(*out1)))
+
+	n2, err := m.node(name2)
+	r.NoError(err)
+	r.Equal(1, len(n2.Claims))
+	r.NotNil(n2.Claims.find(byOut(*out2)))
+
+	err = m.DecrementHeightTo([][]byte{name2}, 11)
+	r.NoError(err)
+	n2, err = m.node(name2)
+	r.NoError(err)
+	r.Nil(n2)
+
+	err = m.DecrementHeightTo([][]byte{name1}, 1)
+	r.NoError(err)
+	n2, err = m.node(name1)
+	r.NoError(err)
+	r.Nil(n2)
+}
+
+func TestSupportAmounts(t *testing.T) {
+
+	r := require.New(t)
+
+	param.SetNetwork(wire.TestNet)
+	repo, err := noderepo.NewPebble(t.TempDir())
+	r.NoError(err)
+
+	m, err := NewBaseManager(repo)
+	r.NoError(err)
+	defer m.Close()
+
+	_, err = m.IncrementHeightTo(10)
+	r.NoError(err)
+
+	chg := change.NewChange(change.AddClaim).SetName(name1).SetOutPoint(out1).SetHeight(11).SetAmount(3)
+	chg.ClaimID = change.NewClaimID(*out1)
+	err = m.AppendChange(chg)
+	r.NoError(err)
+
+	chg = change.NewChange(change.AddClaim).SetName(name1).SetOutPoint(out2).SetHeight(11).SetAmount(4)
+	chg.ClaimID = change.NewClaimID(*out2)
+	err = m.AppendChange(chg)
+	r.NoError(err)
+
+	_, err = m.IncrementHeightTo(11)
+	r.NoError(err)
+
+	chg = change.NewChange(change.AddSupport).SetName(name1).SetOutPoint(out3).SetHeight(12).SetAmount(2)
+	chg.ClaimID = change.NewClaimID(*out1)
+	err = m.AppendChange(chg)
+	r.NoError(err)
+
+	chg = change.NewChange(change.AddSupport).SetName(name1).SetOutPoint(out4).SetHeight(12).SetAmount(2)
+	chg.ClaimID = change.NewClaimID(*out2)
+	err = m.AppendChange(chg)
+	r.NoError(err)
+
+	chg = change.NewChange(change.SpendSupport).SetName(name1).SetOutPoint(out4).SetHeight(12).SetAmount(2)
+	chg.ClaimID = change.NewClaimID(*out2)
+	err = m.AppendChange(chg)
+	r.NoError(err)
+
+	_, err = m.IncrementHeightTo(20)
+	r.NoError(err)
+
+	n1, err := m.node(name1)
+	r.NoError(err)
+	r.Equal(2, len(n1.Claims))
+	r.Equal(int64(5), n1.BestClaim.Amount+n1.SupportSums[n1.BestClaim.ClaimID.Key()])
+}
+
+func TestNodeSort(t *testing.T) {
+
+	r := require.New(t)
+
+	param.ActiveParams.ExtendedClaimExpirationTime = 1000
+
+	r.True(OutPointLess(*out1, *out2))
+	r.True(OutPointLess(*out1, *out3))
+
+	n := New()
+	defer n.Close()
+	n.Claims = append(n.Claims, &Claim{OutPoint: *out1, AcceptedAt: 3, Amount: 3, ClaimID: change.ClaimID{1}})
+	n.Claims = append(n.Claims, &Claim{OutPoint: *out2, AcceptedAt: 3, Amount: 3, ClaimID: change.ClaimID{2}})
+	n.handleExpiredAndActivated(3)
+	n.updateTakeoverHeight(3, []byte{}, true)
+
+	r.Equal(n.Claims.find(byOut(*out1)).OutPoint.String(), n.BestClaim.OutPoint.String())
+
+	n.Claims = append(n.Claims, &Claim{OutPoint: *out3, AcceptedAt: 3, Amount: 3, ClaimID: change.ClaimID{3}})
+	n.handleExpiredAndActivated(3)
+	n.updateTakeoverHeight(3, []byte{}, true)
+	r.Equal(n.Claims.find(byOut(*out1)).OutPoint.String(), n.BestClaim.OutPoint.String())
+}
+
+func TestClaimSort(t *testing.T) {
+
+	r := require.New(t)
+
+	param.ActiveParams.ExtendedClaimExpirationTime = 1000
+
+	n := New()
+	defer n.Close()
+	n.Claims = append(n.Claims, &Claim{OutPoint: *out2, AcceptedAt: 3, Amount: 3, ClaimID: change.ClaimID{2}})
+	n.Claims = append(n.Claims, &Claim{OutPoint: *out3, AcceptedAt: 3, Amount: 2, ClaimID: change.ClaimID{3}})
+	n.Claims = append(n.Claims, &Claim{OutPoint: *out3, AcceptedAt: 4, Amount: 2, ClaimID: change.ClaimID{4}})
+	n.Claims = append(n.Claims, &Claim{OutPoint: *out1, AcceptedAt: 3, Amount: 4, ClaimID: change.ClaimID{1}})
+	n.SortClaimsByBid()
+
+	r.Equal(int64(4), n.Claims[0].Amount)
+	r.Equal(int64(3), n.Claims[1].Amount)
+	r.Equal(int64(2), n.Claims[2].Amount)
+	r.Equal(int32(4), n.Claims[3].AcceptedAt)
+}
+
+func TestHasChildren(t *testing.T) {
+	r := require.New(t)
+
+	param.SetNetwork(wire.TestNet)
+	repo, err := noderepo.NewPebble(t.TempDir())
+	r.NoError(err)
+
+	m, err := NewBaseManager(repo)
+	r.NoError(err)
+	defer m.Close()
+
+	chg := change.NewChange(change.AddClaim).SetName([]byte("a")).SetOutPoint(out1).SetHeight(1).SetAmount(2)
+	chg.ClaimID = change.NewClaimID(*out1)
+	r.NoError(m.AppendChange(chg))
+	_, err = m.IncrementHeightTo(1)
+	r.NoError(err)
+	r.False(m.hasChildren([]byte("a"), 1, nil, 1))
+
+	chg = change.NewChange(change.AddClaim).SetName([]byte("ab")).SetOutPoint(out2).SetHeight(2).SetAmount(2)
+	chg.ClaimID = change.NewClaimID(*out2)
+	r.NoError(m.AppendChange(chg))
+	_, err = m.IncrementHeightTo(2)
+	r.NoError(err)
+	r.False(m.hasChildren([]byte("a"), 2, nil, 2))
+	r.True(m.hasChildren([]byte("a"), 2, nil, 1))
+
+	chg = change.NewChange(change.AddClaim).SetName([]byte("abc")).SetOutPoint(out3).SetHeight(3).SetAmount(2)
+	chg.ClaimID = change.NewClaimID(*out3)
+	r.NoError(m.AppendChange(chg))
+	_, err = m.IncrementHeightTo(3)
+	r.NoError(err)
+	r.False(m.hasChildren([]byte("a"), 3, nil, 2))
+
+	chg = change.NewChange(change.AddClaim).SetName([]byte("ac")).SetOutPoint(out1).SetHeight(4).SetAmount(2)
+	chg.ClaimID = change.NewClaimID(*out4)
+	r.NoError(m.AppendChange(chg))
+	_, err = m.IncrementHeightTo(4)
+	r.NoError(err)
+	r.True(m.hasChildren([]byte("a"), 4, nil, 2))
+}
+
+func TestCollectChildren(t *testing.T) {
+	r := require.New(t)
+
+	c1 := change.Change{Name: []byte("ba"), Type: change.SpendClaim}
+	c2 := change.Change{Name: []byte("ba"), Type: change.UpdateClaim}
+	c3 := change.Change{Name: []byte("ac"), Type: change.SpendClaim}
+	c4 := change.Change{Name: []byte("ac"), Type: change.UpdateClaim}
+	c5 := change.Change{Name: []byte("a"), Type: change.SpendClaim}
+	c6 := change.Change{Name: []byte("a"), Type: change.UpdateClaim}
+	c7 := change.Change{Name: []byte("ab"), Type: change.SpendClaim}
+	c8 := change.Change{Name: []byte("ab"), Type: change.UpdateClaim}
+	c := []change.Change{c1, c2, c3, c4, c5, c6, c7, c8}
+
+	collectChildNames(c)
+
+	r.Empty(c[0].SpentChildren)
+	r.Empty(c[2].SpentChildren)
+	r.Empty(c[4].SpentChildren)
+	r.Empty(c[6].SpentChildren)
+
+	r.Len(c[1].SpentChildren, 0)
+	r.Len(c[3].SpentChildren, 0)
+	r.Len(c[5].SpentChildren, 1)
+	r.True(c[5].SpentChildren["ac"])
+
+	r.Len(c[7].SpentChildren, 0)
+}

claimtrie/node/node.go

@@ -0,0 +1,340 @@
+package node
+
+import (
+	"fmt"
+	"math"
+	"sort"
+	"sync"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/param"
+)
+
+type Node struct {
+	BestClaim   *Claim    // The claim that has most effective amount at the current height.
+	TakenOverAt int32     // The height at when the current BestClaim took over.
+	Claims      ClaimList // List of all Claims.
+	Supports    ClaimList // List of all Supports, including orphaned ones.
+	SupportSums map[string]int64
+}
+
+// New returns a new node.
+func New() *Node {
+	return &Node{SupportSums: map[string]int64{}}
+}
+
+func (n *Node) HasActiveBestClaim() bool {
+	return n.BestClaim != nil && n.BestClaim.Status == Activated
+}
+
+var claimPool = sync.Pool{
+	New: func() interface{} {
+		return &Claim{}
+	},
+}
+
+func (n *Node) Close() {
+	n.BestClaim = nil
+	n.SupportSums = nil
+
+	for i := range n.Claims {
+		claimPool.Put(n.Claims[i])
+	}
+	n.Claims = nil
+
+	for i := range n.Supports {
+		claimPool.Put(n.Supports[i])
+	}
+	n.Supports = nil
+}
+
+func (n *Node) ApplyChange(chg change.Change, delay int32) error {
+
+	visibleAt := chg.VisibleHeight
+	if visibleAt <= 0 {
+		visibleAt = chg.Height
+	}
+
+	switch chg.Type {
+	case change.AddClaim:
+		c := claimPool.Get().(*Claim)
+		// set all 8 fields on c as they aren't initialized to 0:
+		c.Status = Accepted
+		c.OutPoint = chg.OutPoint
+		c.Amount = chg.Amount
+		c.ClaimID = chg.ClaimID
+		// CreatedAt:  chg.Height,
+		c.AcceptedAt = chg.Height
+		c.ActiveAt = chg.Height + delay
+		c.VisibleAt = visibleAt
+		c.Sequence = int32(len(n.Claims))
+		// removed this after proving ResetHeight works:
+		// old := n.Claims.find(byOut(chg.OutPoint))
+		// if old != nil {
+		// return errors.Errorf("CONFLICT WITH EXISTING TXO! Name: %s, Height: %d", chg.Name, chg.Height)
+		// }
+		n.Claims = append(n.Claims, c)
+
+	case change.SpendClaim:
+		c := n.Claims.find(byOut(chg.OutPoint))
+		if c != nil {
+			c.setStatus(Deactivated)
+		} else {
+			LogOnce(fmt.Sprintf("Spending claim but missing existing claim with TXO %s, "+
+				"Name: %s, ID: %s", chg.OutPoint, chg.Name, chg.ClaimID))
+		}
+		// apparently it's legit to be absent in the map:
+		// 'two' at 481100, 36a719a156a1df178531f3c712b8b37f8e7cc3b36eea532df961229d936272a1:0
+
+	case change.UpdateClaim:
+		c := n.Claims.find(byID(chg.ClaimID))
+		if c != nil && c.Status == Deactivated {
+
+			// Keep its ID, which was generated from the spent claim.
+			// And update the rest of properties.
+			c.setOutPoint(chg.OutPoint).SetAmt(chg.Amount)
+			c.setStatus(Accepted) // it was Deactivated in the spend (but we only activate at the end of the block)
+			// that's because the old code would put all insertions into the "queue" that was processed at block's end
+
+			// This forces us to be newer, which may in an unintentional takeover if there's an older one.
+			// TODO: reconsider these updates in future hard forks.
+			c.setAccepted(chg.Height)
+			c.setActiveAt(chg.Height + delay)
+
+		} else {
+			LogOnce(fmt.Sprintf("Updating claim but missing existing claim with ID %s", chg.ClaimID))
+		}
+	case change.AddSupport:
+		s := claimPool.Get().(*Claim)
+		// set all 8 fields on s:
+		s.Status = Accepted
+		s.OutPoint = chg.OutPoint
+		s.Amount = chg.Amount
+		s.ClaimID = chg.ClaimID
+		s.AcceptedAt = chg.Height
+		s.ActiveAt = chg.Height + delay
+		s.VisibleAt = visibleAt
+		s.Sequence = int32(len(n.Supports))
+
+		n.Supports = append(n.Supports, s)
+
+	case change.SpendSupport:
+		s := n.Supports.find(byOut(chg.OutPoint))
+		if s != nil {
+			if s.Status == Activated {
+				n.SupportSums[s.ClaimID.Key()] -= s.Amount
+			}
+			// TODO: we could do without this Deactivated flag if we set expiration instead
+			// That would eliminate the above Sum update.
+			// We would also need to track the update situation, though, but that could be done locally.
+			s.setStatus(Deactivated)
+		} else {
+			LogOnce(fmt.Sprintf("Spending support but missing existing claim with TXO %s, "+
+				"Name: %s, ID: %s", chg.OutPoint, chg.Name, chg.ClaimID))
+		}
+	}
+	return nil
+}
+
+// AdjustTo activates claims and computes takeovers until it reaches the specified height.
+func (n *Node) AdjustTo(height, maxHeight int32, name []byte) *Node {
+	changed := n.handleExpiredAndActivated(height) > 0
+	n.updateTakeoverHeight(height, name, changed)
+	if maxHeight > height {
+		for h := n.NextUpdate(); h <= maxHeight; h = n.NextUpdate() {
+			changed = n.handleExpiredAndActivated(h) > 0
+			n.updateTakeoverHeight(h, name, changed)
+			height = h
+		}
+	}
+	return n
+}
+
+func (n *Node) updateTakeoverHeight(height int32, name []byte, refindBest bool) {
+
+	candidate := n.BestClaim
+	if refindBest {
+		candidate = n.findBestClaim() // so expensive...
+	}
+
+	hasCandidate := candidate != nil
+	hasCurrentWinner := n.HasActiveBestClaim()
+
+	takeoverHappening := !hasCandidate || !hasCurrentWinner || candidate.ClaimID != n.BestClaim.ClaimID
+
+	if takeoverHappening {
+		if n.activateAllClaims(height) > 0 {
+			candidate = n.findBestClaim()
+		}
+	}
+
+	if !takeoverHappening && height < param.ActiveParams.MaxRemovalWorkaroundHeight {
+		// This is a super ugly hack to work around bug in old code.
+		// The bug: un/support a name then update it. This will cause its takeover height to be reset to current.
+		// This is because the old code would add to the cache without setting block originals when dealing in supports.
+		_, takeoverHappening = param.TakeoverWorkarounds[fmt.Sprintf("%d_%s", height, name)] // TODO: ditch the fmt call
+	}
+
+	if takeoverHappening {
+		n.TakenOverAt = height
+		n.BestClaim = candidate
+	}
+}
+
+func (n *Node) handleExpiredAndActivated(height int32) int {
+
+	changes := 0
+	update := func(items ClaimList, sums map[string]int64) ClaimList {
+		for i := 0; i < len(items); i++ {
+			c := items[i]
+			if c.Status == Accepted && c.ActiveAt <= height && c.VisibleAt <= height {
+				c.setStatus(Activated)
+				changes++
+				if sums != nil {
+					sums[c.ClaimID.Key()] += c.Amount
+				}
+			}
+			if c.ExpireAt() <= height || c.Status == Deactivated {
+				if i < len(items)-1 {
+					items[i] = items[len(items)-1]
+					i--
+				}
+				items = items[:len(items)-1]
+				changes++
+				if sums != nil && c.Status != Deactivated {
+					sums[c.ClaimID.Key()] -= c.Amount
+				}
+			}
+		}
+		return items
+	}
+	n.Claims = update(n.Claims, nil)
+	n.Supports = update(n.Supports, n.SupportSums)
+	return changes
+}
+
+// NextUpdate returns the nearest height in the future that the node should
+// be refreshed due to changes of claims or supports.
+func (n Node) NextUpdate() int32 {
+
+	next := int32(math.MaxInt32)
+
+	for _, c := range n.Claims {
+		if c.ExpireAt() < next {
+			next = c.ExpireAt()
+		}
+		// if we're not active, we need to go to activeAt unless we're still invisible there
+		if c.Status == Accepted {
+			min := c.ActiveAt
+			if c.VisibleAt > min {
+				min = c.VisibleAt
+			}
+			if min < next {
+				next = min
+			}
+		}
+	}
+
+	for _, s := range n.Supports {
+		if s.ExpireAt() < next {
+			next = s.ExpireAt()
+		}
+		if s.Status == Accepted {
+			min := s.ActiveAt
+			if s.VisibleAt > min {
+				min = s.VisibleAt
+			}
+			if min < next {
+				next = min
+			}
+		}
+	}
+
+	return next
+}
+
+func (n Node) findBestClaim() *Claim {
+
+	// WARNING: this method is called billions of times.
+	// if we just had some easy way to know that our best claim was the first one in the list...
+	// or it may be faster to cache effective amount in the db at some point.
+
+	var best *Claim
+	var bestAmount int64
+	for _, candidate := range n.Claims {
+
+		// not using switch here for performance reasons
+		if candidate.Status != Activated {
+			continue
+		}
+
+		if best == nil {
+			best = candidate
+			continue
+		}
+
+		candidateAmount := candidate.Amount + n.SupportSums[candidate.ClaimID.Key()]
+		if bestAmount <= 0 {
+			bestAmount = best.Amount + n.SupportSums[best.ClaimID.Key()]
+		}
+
+		switch {
+		case candidateAmount > bestAmount:
+			best = candidate
+			bestAmount = candidateAmount
+		case candidateAmount < bestAmount:
+			continue
+		case candidate.AcceptedAt < best.AcceptedAt:
+			best = candidate
+			bestAmount = candidateAmount
+		case candidate.AcceptedAt > best.AcceptedAt:
+			continue
+		case OutPointLess(candidate.OutPoint, best.OutPoint):
+			best = candidate
+			bestAmount = candidateAmount
+		}
+	}
+
+	return best
+}
+
+func (n *Node) activateAllClaims(height int32) int {
+	count := 0
+	for _, c := range n.Claims {
+		if c.Status == Accepted && c.ActiveAt > height && c.VisibleAt <= height {
+			c.setActiveAt(height) // don't necessarily need to change this number?
+			c.setStatus(Activated)
+			count++
+		}
+	}
+
+	for _, s := range n.Supports {
+		if s.Status == Accepted && s.ActiveAt > height && s.VisibleAt <= height {
+			s.setActiveAt(height) // don't necessarily need to change this number?
+			s.setStatus(Activated)
+			count++
+			n.SupportSums[s.ClaimID.Key()] += s.Amount
+		}
+	}
+	return count
+}
+
+func (n *Node) SortClaimsByBid() {
+
+	// purposefully sorting by descent
+	sort.Slice(n.Claims, func(j, i int) bool {
+		iAmount := n.Claims[i].Amount + n.SupportSums[n.Claims[i].ClaimID.Key()]
+		jAmount := n.Claims[j].Amount + n.SupportSums[n.Claims[j].ClaimID.Key()]
+		switch {
+		case iAmount < jAmount:
+			return true
+		case iAmount > jAmount:
+			return false
+		case n.Claims[i].AcceptedAt > n.Claims[j].AcceptedAt:
+			return true
+		case n.Claims[i].AcceptedAt < n.Claims[j].AcceptedAt:
+			return false
+		}
+		return OutPointLess(n.Claims[j].OutPoint, n.Claims[i].OutPoint)
+	})
+}

claimtrie/node/noderepo/noderepo_test.go

@@ -0,0 +1,188 @@
+package noderepo
+
+import (
+	"testing"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/node"
+
+	"github.com/stretchr/testify/require"
+)
+
+var (
+	out1          = node.NewOutPointFromString("0000000000000000000000000000000000000000000000000000000000000000:1")
+	testNodeName1 = []byte("name1")
+)
+
+func TestPebble(t *testing.T) {
+
+	r := require.New(t)
+
+	repo, err := NewPebble(t.TempDir())
+	r.NoError(err)
+	defer func() {
+		err := repo.Close()
+		r.NoError(err)
+	}()
+
+	cleanup := func() {
+		lowerBound := testNodeName1
+		upperBound := append(testNodeName1, byte(0))
+		err := repo.db.DeleteRange(lowerBound, upperBound, nil)
+		r.NoError(err)
+	}
+
+	testNodeRepo(t, repo, func() {}, cleanup)
+}
+
+func testNodeRepo(t *testing.T, repo node.Repo, setup, cleanup func()) {
+
+	r := require.New(t)
+
+	chg := change.NewChange(change.AddClaim).SetName(testNodeName1).SetOutPoint(out1)
+
+	testcases := []struct {
+		name     string
+		height   int32
+		changes  []change.Change
+		expected []change.Change
+	}{
+		{
+			"test 1",
+			1,
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+			[]change.Change{chg.SetHeight(1)},
+		},
+		{
+			"test 2",
+			2,
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+			[]change.Change{chg.SetHeight(1)},
+		},
+		{
+			"test 3",
+			3,
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3)},
+		},
+		{
+			"test 4",
+			4,
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3)},
+		},
+		{
+			"test 5",
+			5,
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+		},
+		{
+			"test 6",
+			6,
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+			[]change.Change{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+		},
+	}
+
+	for _, tt := range testcases {
+
+		setup()
+
+		err := repo.AppendChanges(tt.changes)
+		r.NoError(err)
+
+		changes, err := repo.LoadChanges(testNodeName1)
+		r.NoError(err)
+		r.Equalf(tt.expected, changes[:len(tt.expected)], tt.name)
+
+		cleanup()
+	}
+
+	testcases2 := []struct {
+		name     string
+		height   int32
+		changes  [][]change.Change
+		expected []change.Change
+	}{
+		{
+			"Save in 2 batches, and load up to 1",
+			1,
+			[][]change.Change{
+				{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+				{chg.SetHeight(6), chg.SetHeight(8), chg.SetHeight(9)},
+			},
+			[]change.Change{chg.SetHeight(1)},
+		},
+		{
+			"Save in 2 batches, and load up to 9",
+			9,
+			[][]change.Change{
+				{chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5)},
+				{chg.SetHeight(6), chg.SetHeight(8), chg.SetHeight(9)},
+			},
+			[]change.Change{
+				chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5),
+				chg.SetHeight(6), chg.SetHeight(8), chg.SetHeight(9),
+			},
+		},
+		{
+			"Save in 3 batches, and load up to 8",
+			8,
+			[][]change.Change{
+				{chg.SetHeight(1), chg.SetHeight(3)},
+				{chg.SetHeight(5)},
+				{chg.SetHeight(6), chg.SetHeight(8), chg.SetHeight(9)},
+			},
+			[]change.Change{
+				chg.SetHeight(1), chg.SetHeight(3), chg.SetHeight(5),
+				chg.SetHeight(6), chg.SetHeight(8),
+			},
+		},
+	}
+
+	for _, tt := range testcases2 {
+
+		setup()
+
+		for _, changes := range tt.changes {
+			err := repo.AppendChanges(changes)
+			r.NoError(err)
+		}
+
+		changes, err := repo.LoadChanges(testNodeName1)
+		r.NoError(err)
+		r.Equalf(tt.expected, changes[:len(tt.expected)], tt.name)
+
+		cleanup()
+	}
+}
+
+func TestIterator(t *testing.T) {
+
+	r := require.New(t)
+
+	repo, err := NewPebble(t.TempDir())
+	r.NoError(err)
+	defer func() {
+		err := repo.Close()
+		r.NoError(err)
+	}()
+
+	creation := []change.Change{
+		{Name: []byte("test\x00"), Height: 5},
+		{Name: []byte("test\x00\x00"), Height: 5},
+		{Name: []byte("test\x00b"), Height: 5},
+		{Name: []byte("test\x00\xFF"), Height: 5},
+		{Name: []byte("testa"), Height: 5},
+	}
+	err = repo.AppendChanges(creation)
+	r.NoError(err)
+
+	i := 0
+	repo.IterateChildren([]byte{}, func(changes []change.Change) bool {
+		r.Equal(creation[i], changes[0])
+		i++
+		return true
+	})
+}

claimtrie/node/noderepo/pebble.go

@@ -0,0 +1,219 @@
+package noderepo
+
+import (
+	"bytes"
+	"io"
+	"sort"
+	"sync"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/cockroachdb/pebble"
+	"github.com/pkg/errors"
+)
+
+type Pebble struct {
+	db *pebble.DB
+}
+
+type pooledMerger struct {
+	pool   *sync.Pool
+	buffer []byte
+}
+
+func (a *pooledMerger) MergeNewer(value []byte) error {
+	if a.buffer == nil {
+		a.buffer = a.pool.Get().([]byte)
+	}
+	a.buffer = append(a.buffer, value...)
+	return nil
+}
+func (a *pooledMerger) MergeOlder(value []byte) error {
+	if a.buffer == nil {
+		a.buffer = a.pool.Get().([]byte)
+	}
+	n := len(a.buffer)
+	if cap(a.buffer) >= len(value)+n {
+		a.buffer = a.buffer[0 : len(value)+n]      // expand it
+		copy(a.buffer[len(value):], a.buffer[0:n]) // could overlap
+		copy(a.buffer, value)
+	} else {
+		existing := a.buffer
+		a.buffer = make([]byte, 0, len(value)+len(existing))
+		a.buffer = append(a.buffer, value...)
+		a.buffer = append(a.buffer, existing...)
+	}
+	return nil
+}
+
+func (a *pooledMerger) Finish(_ bool) ([]byte, io.Closer, error) {
+	return a.buffer, a, nil
+}
+
+func (a *pooledMerger) Close() error {
+	a.pool.Put(a.buffer[:0])
+	a.buffer = nil
+	a.pool = nil
+	return nil
+}
+
+func NewPebble(path string) (*Pebble, error) {
+
+	mp := &sync.Pool{
+		New: func() interface{} {
+			return make([]byte, 0, 256)
+		},
+	}
+
+	db, err := pebble.Open(path, &pebble.Options{
+		Merger: &pebble.Merger{
+			Merge: func(key, value []byte) (pebble.ValueMerger, error) {
+				p := &pooledMerger{pool: mp}
+				return p, p.MergeNewer(value)
+			},
+			Name: pebble.DefaultMerger.Name, // yes, it's a lie
+		},
+		Cache:        pebble.NewCache(32 << 20),
+		BytesPerSync: 4 << 20,
+	})
+
+	repo := &Pebble{db: db}
+
+	return repo, errors.Wrapf(err, "unable to open %s", path)
+}
+
+// AppendChanges makes an assumption that anything you pass to it is newer than what was saved before.
+func (repo *Pebble) AppendChanges(changes []change.Change) error {
+
+	batch := repo.db.NewBatch()
+	defer batch.Close()
+
+	buffer := bytes.NewBuffer(nil)
+
+	for _, chg := range changes {
+		buffer.Reset()
+		err := chg.MarshalTo(buffer)
+		if err != nil {
+			return errors.Wrap(err, "in marshaller")
+		}
+
+		// expecting this next line to make a copy of the buffer, not hold it
+		err = batch.Merge(chg.Name, buffer.Bytes(), pebble.NoSync)
+		if err != nil {
+			return errors.Wrap(err, "in merge")
+		}
+	}
+	return errors.Wrap(batch.Commit(pebble.NoSync), "in commit")
+}
+
+func (repo *Pebble) LoadChanges(name []byte) ([]change.Change, error) {
+
+	data, closer, err := repo.db.Get(name)
+	if err != nil && err != pebble.ErrNotFound {
+		return nil, errors.Wrapf(err, "in get %s", name) // does returning a name in an error expose too much?
+	}
+	if closer != nil {
+		defer closer.Close()
+	}
+
+	return unmarshalChanges(name, data)
+}
+
+func unmarshalChanges(name, data []byte) ([]change.Change, error) {
+	var changes []change.Change
+
+	buffer := bytes.NewBuffer(data)
+	for buffer.Len() > 0 {
+		var chg change.Change
+		err := chg.UnmarshalFrom(buffer)
+		if err != nil {
+			return nil, errors.Wrap(err, "in decode")
+		}
+		chg.Name = name
+		changes = append(changes, chg)
+	}
+
+	// this was required for the normalization stuff:
+	sort.SliceStable(changes, func(i, j int) bool {
+		return changes[i].Height < changes[j].Height
+	})
+
+	return changes, nil
+}
+
+func (repo *Pebble) DropChanges(name []byte, finalHeight int32) error {
+	changes, err := repo.LoadChanges(name)
+	if err != nil {
+		return errors.Wrapf(err, "in load changes for %s", name)
+	}
+	i := 0
+	for ; i < len(changes); i++ {
+		if changes[i].Height > finalHeight {
+			break
+		}
+	}
+	// making a performance assumption that DropChanges won't happen often:
+	err = repo.db.Set(name, []byte{}, pebble.NoSync)
+	if err != nil {
+		return errors.Wrapf(err, "in set at %s", name)
+	}
+	return repo.AppendChanges(changes[:i])
+}
+
+func (repo *Pebble) IterateChildren(name []byte, f func(changes []change.Change) bool) error {
+	start := make([]byte, len(name)+1) // zeros that last byte; need a constant len for stack alloc?
+	copy(start, name)
+
+	end := make([]byte, 256) // max name length is 255
+	copy(end, name)
+	for i := len(name); i < 256; i++ {
+		end[i] = 255
+	}
+
+	prefixIterOptions := &pebble.IterOptions{
+		LowerBound: start,
+		UpperBound: end,
+	}
+
+	iter := repo.db.NewIter(prefixIterOptions)
+	defer iter.Close()
+
+	for iter.First(); iter.Valid(); iter.Next() {
+		// NOTE! iter.Key() is ephemeral!
+		changes, err := unmarshalChanges(iter.Key(), iter.Value())
+		if err != nil {
+			return errors.Wrapf(err, "from unmarshaller at %s", iter.Key())
+		}
+		if !f(changes) {
+			break
+		}
+	}
+	return nil
+}
+
+func (repo *Pebble) IterateAll(predicate func(name []byte) bool) {
+	iter := repo.db.NewIter(nil)
+	defer iter.Close()
+
+	for iter.First(); iter.Valid(); iter.Next() {
+		if !predicate(iter.Key()) {
+			break
+		}
+	}
+}
+
+func (repo *Pebble) Close() error {
+
+	err := repo.db.Flush()
+	if err != nil {
+		// if we fail to close are we going to try again later?
+		return errors.Wrap(err, "on flush")
+	}
+
+	err = repo.db.Close()
+	return errors.Wrap(err, "on close")
+}
+
+func (repo *Pebble) Flush() error {
+	_, err := repo.db.AsyncFlush()
+	return err
+}

claimtrie/node/normalizer.go

@@ -0,0 +1,30 @@
+package node
+
+import (
+	"github.com/btcsuite/btcd/claimtrie/param"
+	"golang.org/x/text/cases"
+	"golang.org/x/text/unicode/norm"
+)
+
+//func init() {
+//	if cases.UnicodeVersion[:2] != "11" {
+//		panic("Wrong unicode version!")
+//	}
+//}
+
+var Normalize = normalizeGo
+
+func NormalizeIfNecessary(name []byte, height int32) []byte {
+	if height < param.ActiveParams.NormalizedNameForkHeight {
+		return name
+	}
+	return Normalize(name)
+}
+
+var folder = cases.Fold()
+
+func normalizeGo(value []byte) []byte {
+
+	normalized := norm.NFD.Bytes(value)
+	return folder.Bytes(normalized)
+}

claimtrie/node/normalizer_icu.go

@@ -0,0 +1,65 @@
+// +build use_icu_normalization
+
+package node
+
+// #cgo CFLAGS: -O2
+// #cgo LDFLAGS: -licuio -licui18n -licuuc -licudata
+// #include <unicode/unorm2.h>
+// #include <unicode/ustring.h>
+// #include <unicode/uversion.h>
+// int icu_version() {
+//    UVersionInfo info;
+//    u_getVersion(info);
+//    return ((int)(info[0]) << 16) + info[1];
+// }
+// int normalize(char* name, int length, char* result) {
+//   UErrorCode ec = U_ZERO_ERROR;
+//   static const UNormalizer2* normalizer = NULL;
+//   if (normalizer == NULL) normalizer = unorm2_getNFDInstance(&ec);
+//   UChar dest[256]; // maximum claim name size is 255; we won't have more UTF16 chars than bytes
+//   int dest_len;
+//   u_strFromUTF8(dest, 256, &dest_len, name, length, &ec);
+//   if (U_FAILURE(ec) || dest_len == 0) return 0;
+//   UChar normalized[256];
+//   dest_len = unorm2_normalize(normalizer, dest, dest_len, normalized, 256, &ec);
+//   if (U_FAILURE(ec) || dest_len == 0) return 0;
+//   dest_len = u_strFoldCase(dest, 256, normalized, dest_len, U_FOLD_CASE_DEFAULT, &ec);
+//   if (U_FAILURE(ec) || dest_len == 0) return 0;
+//   u_strToUTF8(result, 512, &dest_len, dest, dest_len, &ec);
+//   return dest_len;
+// }
+import "C"
+import (
+	"fmt"
+	"unsafe"
+)
+
+func init() {
+	Normalize = normalizeICU
+}
+
+func IcuVersion() string {
+	// TODO: we probably need to explode if it's not 63.2 as it affects consensus
+	result := C.icu_version()
+	return fmt.Sprintf("%d.%d", result>>16, result&0xffff)
+}
+
+func normalizeICU(value []byte) []byte {
+	if len(value) <= 0 {
+		return value
+	}
+	name := (*C.char)(unsafe.Pointer(&value[0]))
+	length := C.int(len(value))
+
+	// hopefully this is a stack alloc (but it may be a bit large for that):
+	var resultName [512]byte // inputs are restricted to 255 chars; it shouldn't expand too much past that
+	result := unsafe.Pointer(&resultName[0])
+
+	resultLength := C.normalize(name, length, (*C.char)(result))
+	if resultLength == 0 {
+		return value
+	}
+
+	// return resultName[0:resultLength] -- we want to shrink the result (not use a slice on 1024)
+	return C.GoBytes(result, resultLength)
+}

claimtrie/node/normalizer_icu_test.go

@@ -0,0 +1,23 @@
+// +build use_icu_normalization
+
+package node
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestNormalizationICU(t *testing.T) {
+	testNormalization(t, normalizeICU)
+}
+
+func BenchmarkNormalizeICU(b *testing.B) {
+	benchmarkNormalize(b, normalizeICU)
+}
+
+func TestBlock760150(t *testing.T) {
+	test := "Ꮖ-Ꮩ-Ꭺ-N--------Ꭺ-N-Ꮹ-Ꭼ-Ꮮ-Ꭺ-on-Instagram_-“Our-next-destination-is-East-and-Southeast-Asia--selfie--asia”"
+	a := normalizeGo([]byte(test))
+	b := normalizeICU([]byte(test))
+	assert.Equal(t, a, b)
+}

claimtrie/node/normalizer_test.go

@@ -0,0 +1,54 @@
+package node
+
+import (
+	"math/rand"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestNormalizationGo(t *testing.T) {
+	testNormalization(t, normalizeGo)
+}
+
+func testNormalization(t *testing.T, normalize func(value []byte) []byte) {
+
+	r := require.New(t)
+
+	r.Equal("test", string(normalize([]byte("TESt"))))
+	r.Equal("test 23", string(normalize([]byte("tesT 23"))))
+	r.Equal("\xFF", string(normalize([]byte("\xFF"))))
+	r.Equal("\xC3\x28", string(normalize([]byte("\xC3\x28"))))
+	r.Equal("\xCF\x89", string(normalize([]byte("\xE2\x84\xA6"))))
+	r.Equal("\xD1\x84", string(normalize([]byte("\xD0\xA4"))))
+	r.Equal("\xD5\xA2", string(normalize([]byte("\xD4\xB2"))))
+	r.Equal("\xE3\x81\xB5\xE3\x82\x99", string(normalize([]byte("\xE3\x81\xB6"))))
+	r.Equal("\xE1\x84\x81\xE1\x85\xAA\xE1\x86\xB0", string(normalize([]byte("\xEA\xBD\x91"))))
+}
+
+func randSeq(n int) []byte {
+	var alphabet = []rune("abcdefghijklmnopqrstuvwxyz̃ABCDEFGHIJKLMNOPQRSTUVWXYZ̃")
+
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = alphabet[rand.Intn(len(alphabet))]
+	}
+	return []byte(string(b))
+}
+
+func BenchmarkNormalize(b *testing.B) {
+	benchmarkNormalize(b, normalizeGo)
+}
+
+func benchmarkNormalize(b *testing.B, normalize func(value []byte) []byte) {
+	rand.Seed(42)
+	strings := make([][]byte, b.N)
+	for i := 0; i < b.N; i++ {
+		strings[i] = randSeq(32)
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		s := normalize(strings[i])
+		require.True(b, len(s) >= 8)
+	}
+}

claimtrie/node/normalizing_manager.go

@@ -0,0 +1,121 @@
+package node
+
+import (
+	"bytes"
+
+	"github.com/btcsuite/btcd/claimtrie/change"
+	"github.com/btcsuite/btcd/claimtrie/param"
+)
+
+type NormalizingManager struct { // implements Manager
+	Manager
+	normalizedAt int32
+}
+
+func NewNormalizingManager(baseManager Manager) Manager {
+	return &NormalizingManager{
+		Manager:      baseManager,
+		normalizedAt: -1,
+	}
+}
+
+func (nm *NormalizingManager) AppendChange(chg change.Change) error {
+	chg.Name = NormalizeIfNecessary(chg.Name, chg.Height)
+	return nm.Manager.AppendChange(chg)
+}
+
+func (nm *NormalizingManager) IncrementHeightTo(height int32) ([][]byte, error) {
+	nm.addNormalizationForkChangesIfNecessary(height)
+	return nm.Manager.IncrementHeightTo(height)
+}
+
+func (nm *NormalizingManager) DecrementHeightTo(affectedNames [][]byte, height int32) error {
+	if nm.normalizedAt > height {
+		nm.normalizedAt = -1
+	}
+	return nm.Manager.DecrementHeightTo(affectedNames, height)
+}
+
+func (nm *NormalizingManager) NextUpdateHeightOfNode(name []byte) ([]byte, int32) {
+	name, nextUpdate := nm.Manager.NextUpdateHeightOfNode(name)
+	if nextUpdate > param.ActiveParams.NormalizedNameForkHeight {
+		name = Normalize(name)
+	}
+	return name, nextUpdate
+}
+
+func (nm *NormalizingManager) addNormalizationForkChangesIfNecessary(height int32) {
+
+	if nm.Manager.Height()+1 != height {
+		// initialization phase
+		if height >= param.ActiveParams.NormalizedNameForkHeight {
+			nm.normalizedAt = param.ActiveParams.NormalizedNameForkHeight // eh, we don't really know that it happened there
+		}
+	}
+
+	if nm.normalizedAt >= 0 || height != param.ActiveParams.NormalizedNameForkHeight {
+		return
+	}
+	nm.normalizedAt = height
+	log.Info("Generating necessary changes for the normalization fork...")
+
+	// the original code had an unfortunate bug where many unnecessary takeovers
+	// were triggered at the normalization fork
+	predicate := func(name []byte) bool {
+		norm := Normalize(name)
+		eq := bytes.Equal(name, norm)
+		if eq {
+			return true
+		}
+
+		clone := make([]byte, len(name))
+		copy(clone, name) // iteration name buffer is reused on future loops
+
+		// by loading changes for norm here, you can determine if there will be a conflict
+
+		n, err := nm.Manager.NodeAt(nm.Manager.Height(), clone)
+		if err != nil || n == nil {
+			return true
+		}
+		defer n.Close()
+		for _, c := range n.Claims {
+			nm.Manager.AppendChange(change.Change{
+				Type:          change.AddClaim,
+				Name:          norm,
+				Height:        c.AcceptedAt,
+				OutPoint:      c.OutPoint,
+				ClaimID:       c.ClaimID,
+				Amount:        c.Amount,
+				ActiveHeight:  c.ActiveAt, // necessary to match the old hash
+				VisibleHeight: height,     // necessary to match the old hash; it would have been much better without
+			})
+			nm.Manager.AppendChange(change.Change{
+				Type:     change.SpendClaim,
+				Name:     clone,
+				Height:   height,
+				OutPoint: c.OutPoint,
+			})
+		}
+		for _, c := range n.Supports {
+			nm.Manager.AppendChange(change.Change{
+				Type:          change.AddSupport,
+				Name:          norm,
+				Height:        c.AcceptedAt,
+				OutPoint:      c.OutPoint,
+				ClaimID:       c.ClaimID,
+				Amount:        c.Amount,
+				ActiveHeight:  c.ActiveAt,
+				VisibleHeight: height,
+			})
+			nm.Manager.AppendChange(change.Change{
+				Type:     change.SpendSupport,
+				Name:     clone,
+				Height:   height,
+				OutPoint: c.OutPoint,
+			})
+		}
+
+		return true
+	}
+	nm.Manager.IterateNames(predicate)
+}

claimtrie/node/repo.go

@@ -0,0 +1,31 @@
+package node
+
+import (
+	"github.com/btcsuite/btcd/claimtrie/change"
+)
+
+// Repo defines APIs for Node to access persistence layer.
+type Repo interface {
+	// AppendChanges saves changes into the repo.
+	// The changes can belong to different nodes, but the chronological
+	// order must be preserved for the same node.
+	AppendChanges(changes []change.Change) error
+
+	// LoadChanges loads changes of a node up to (includes) the specified height.
+	// If no changes found, both returned slice and error will be nil.
+	LoadChanges(name []byte) ([]change.Change, error)
+
+	DropChanges(name []byte, finalHeight int32) error
+
+	// Close closes the repo.
+	Close() error
+
+	// IterateChildren returns change sets for each of name.+
+	// Return false on f to stop the iteration.
+	IterateChildren(name []byte, f func(changes []change.Change) bool) error
+
+	// IterateAll iterates keys until the predicate function returns false
+	IterateAll(predicate func(name []byte) bool)
+
+	Flush() error
+}

claimtrie/param/delays.go

@@ -0,0 +1,285 @@
+package param
+
+var DelayWorkarounds = generateDelayWorkarounds() // called "removal workarounds" in previous versions
+
+func generateDelayWorkarounds() map[string][]int32 {
+	return map[string][]int32{
+		"travtest01":                               {426898},
+		"gauntlet-invade-the-darkness-lvl-1-of":    {583305},
+		"fr-let-s-play-software-inc-jay":           {588308},
+		"fr-motorsport-manager-jay-s-racing":       {588308},
+		"fr-crusader-kings-2-la-dynastie-6":        {588318},
+		"fr-jurassic-world-evolution-let-s-play":   {588318},
+		"calling-tech-support-scammers-live-3":     {588683, 646584},
+		"let-s-play-jackbox-games":                 {589013},
+		"lets-play-jackbox-games-5":                {589013},
+		"kabutothesnake-s-live-ps4-broadcast":      {589538},
+		"no-eas-strong-thunderstorm-advisory":      {589554},
+		"geometry-dash-level-requests":             {589564},
+		"geometry-dash-level-requests-2":           {589564},
+		"star-ocean-integrity-and-faithlessness":   {589609},
+		"@pop":                                     {589613},
+		"ullash":                                   {589630},
+		"today-s-professionals-2018-winter-3":      {589640},
+		"today-s-professionals-2018-winter-4":      {589640},
+		"today-s-professionals-2018-winter-10":     {589641},
+		"today-s-professionals-big-brother-6-13":   {589641},
+		"today-s-professionals-big-brother-6-14":   {589641},
+		"today-s-professionals-big-brother-6-26":   {589641},
+		"today-s-professionals-big-brother-6-27":   {589641},
+		"today-s-professionals-big-brother-6-28":   {589641},
+		"today-s-professionals-big-brother-6-29":   {589641},
+		"dark-souls-iii":                           {589697},
+		"bobby-blades":                             {589760},
+		"adrian":                                   {589803},
+		"roblox-2":                                 {589803, 597925},
+		"roblox-4":                                 {589803},
+		"roblox-5":                                 {589803},
+		"roblox-6":                                 {589803},
+		"roblox-7":                                 {589803},
+		"roblox-8":                                 {589803},
+		"madden-17":                                {589809},
+		"madden-18-franchise":                      {589810},
+		"fifa-14-android-astrodude44-vs":           {589831},
+		"gaming-with-silverwolf-live-stream-3":     {589849},
+		"gaming-with-silverwolf-live-stream-4":     {589849},
+		"gaming-with-silverwolf-live-stream-5":     {589849},
+		"gaming-with-silverwolf-videos-live":       {589849},
+		"gaming-with-silverwolf-live-stream-6":     {589851},
+		"live-q-a":                                 {589851},
+		"classic-sonic-games":                      {589870},
+		"gta":                                      {589926},
+		"j-dog7973-s-fortnite-squad":               {589926},
+		"wow-warlords-of-draenor-horde-side":       {589967},
+		"minecraft-ps4-hardcore-survival-2-the-5":  {589991},
+		"happy-new-year-2017":                      {590013},
+		"come-chill-with-rekzzey-2":                {590020},
+		"counter-strike-global-offensive-funny":    {590031},
+		"father-vs-son-stickfight-stickfight":      {590178},
+		"little-t-playing-subnautica-livestream":   {590178},
+		"today-s-professionals-big-brother-7-26-5": {590200},
+		"50585be4e3159a7-1":                        {590206},
+		"dark-souls-iii-soul-level-1-challenge":    {590223},
+		"dark-souls-iii-soul-level-1-challenge-3":  {590223},
+		"let-s-play-sniper-elite-4-authentic-2":    {590225},
+		"skyrim-special-edition-ps4-platinum-4":    {590225},
+		"let-s-play-final-fantasy-the-zodiac-2":    {590226},
+		"let-s-play-final-fantasy-the-zodiac-3":    {590226},
+		"ls-h-ppchen-halloween-stream-vom-31-10":   {590401},
+		"a-new-stream":                             {590669},
+		"danganronpa-v3-killing-harmony-episode":   {590708},
+		"danganronpa-v3-killing-harmony-episode-4": {590708},
+		"danganronpa-v3-killing-harmony-episode-6": {590708},
+		"danganronpa-v3-killing-harmony-episode-8": {590708},
+		"danganronpa-v3-killing-harmony-episode-9": {590708},
+		"call-of-duty-infinite-warfare-gameplay-2": {591982},
+		"destiny-the-taken-king-gameplay":          {591982},
+		"horizon-zero-dawn-100-complete-4":         {591983},
+		"ghost-recon-wildlands-100-complete-4":     {591984},
+		"nier-automata-100-complete-gameplay-25":   {591985},
+		"frustrert":                                {592291},
+		"call-of-duty-black-ops-3-multiplayer":     {593504},
+		"rayman-legends-challenges-app-the":        {593551},
+		"super-mario-sunshine-3-player-race-2":     {593552},
+		"some-new-stuff-might-play-a-game":         {593698},
+		"memory-techniques-1-000-people-system":    {595537},
+		"propresenter-6-tutorials-new-features-4":  {595559},
+		"rocket-league-live":                       {595559},
+		"fortnite-battle-royale":                   {595818},
+		"fortnite-battle-royale-2":                 {595818},
+		"ohare12345-s-live-ps4-broadcast":          {595818},
+		"super-smash-bros-u-home-run-contest-13":   {595838},
+		"super-smash-bros-u-home-run-contest-15":   {595838},
+		"super-smash-bros-u-home-run-contest-2":    {595838, 595844},
+		"super-smash-bros-u-home-run-contest-22":   {595838, 595845},
+		"super-smash-bros-u-multi-man-smash-3":     {595838},
+		"minecraft-survival-biedronka-i-czarny-2":  {596828},
+		"gramy-minecraft-jasmc-pl":                 {596829},
+		"farcry-5-gameplay":                        {595818},
+		"my-channel-trailer":                       {595818},
+		"full-song-production-tutorial-aeternum":   {596934},
+		"blackboxglobalreview-hd":                  {597091},
+		"tom-clancy-s-rainbow-six-siege":           {597633},
+		"5-new-technology-innovations-in-5":        {597635},
+		"5-new-technology-innovations-in-5-2":      {597635},
+		"how-to-play-nothing-else-matters-on":      {597637},
+		"rb6":                                      {597639},
+		"borderlands-2-tiny-tina-s-assault-on":     {597658},
+		"let-s-play-borderlands-the-pre-sequel":    {597658},
+		"caveman-world-mountains-of-unga-boonga":   {597660},
+		"for-honor-ps4-2":                          {597706},
+		"fortnite-episode-1":                       {597728},
+		"300-subscribers":                          {597750},
+		"viscera-cleanup-detail-santa-s-rampage":   {597755},
+		"infinite-voxel-terrain-in-unity-update":   {597777},
+		"let-s-play-pok-mon-light-platinum":        {597783},
+		"video-2":                                  {597785},
+		"video-8":                                  {597785},
+		"finally":                                  {597793},
+		"let-s-play-mario-party-luigi-s-engine":    {597796},
+		"my-edited-video":                          {597799},
+		"we-need-to-talk":                          {597800},
+		"tf2-stream-2":                             {597811},
+		"royal-thumble-tuesday-night-thumbdown":    {597814},
+		"beat-it-michael-jackson-cover":            {597815},
+		"black-ops-3":                              {597816},
+		"call-of-duty-black-ops-3-campaign":        {597819},
+		"skyrim-special-edition-silent-2":          {597822},
+		"the-chainsmokers-everybody-hates-me":      {597823},
+		"experiment-glowing-1000-degree-knife-vs":  {597824},
+		"l1011widebody-friends-let-s-play-2":       {597824},
+		"call-of-duty-black-ops-4":                 {597825},
+		"let-s-play-fallout-2-restoration-3":       {597825},
+		"let-s-play-fallout-2-restoration-19":      {597826},
+		"let-s-play-fallout-2-restoration-27":      {597826},
+		"2015":                                     {597828},
+		"payeer":                                   {597829},
+		"youtube-3":                                {597829},
+		"bitcoin-5":                                {597830},
+		"2016":                                     {597831},
+		"bitcoin-2":                                {597831},
+		"dreamtowards":                             {597831},
+		"surfearner":                               {597831},
+		"100-000":                                  {597832},
+		"20000":                                    {597833},
+		"remme":                                    {597833},
+		"hycon":                                    {597834},
+		"robocraft":                                {597834},
+		"saturday-night-baseball-with-37":          {597834},
+		"let-s-play-command-conquer-red-alert-9":   {597835},
+		"15-curiosidades-que-probablemente-ya":     {597837},
+		"elder-scrolls-online-road-to-level-20":    {597893},
+		"playerunknown-s-battlegrounds":            {597894},
+		"black-ops-3-fun":                          {597897},
+		"mortal-kombat-xl-the-funniest":            {597899},
+		"try-not-to-laugh-2":                       {597899},
+		"call-of-duty-advanced-warfare-domination": {597898},
+		"my-live-stream-with-du-recorder-5":        {597900},
+		"ls-h-ppchen-halloween-stream-vom-31-10-2": {597904},
+		"ls-h-ppchen-halloween-stream-vom-31-10-3": {597904},
+		"how-it-feels-to-chew-5-gum-funny-8":       {597905},
+		"live-stream-mu-club-america-3":            {597918},
+		"black-death":                              {597927},
+		"lets-play-spore-with-3":                   {597929},
+		"true-mov-2":                               {597933},
+		"fortnite-w-pat-the-rat-pat-the-rat":       {597935},
+		"jugando-pokemon-esmeralda-gba":            {597935},
+		"talking-about-my-channel-and-much-more-4": {597936},
+		"-14":                       {597939},
+		"-15":                       {597939},
+		"-16":                       {597939},
+		"-17":                       {597939},
+		"-18":                       {597939},
+		"-20":                       {597939},
+		"-21":                       {597939},
+		"-24":                       {597939},
+		"-25":                       {597939},
+		"-26":                       {597939},
+		"-27":                       {597939},
+		"-28":                       {597939},
+		"-29":                       {597939},
+		"-31":                       {597941},
+		"-34":                       {597941},
+		"-6":                        {597939},
+		"-7":                        {597939},
+		"10-4":                      {612097},
+		"10-6":                      {612097},
+		"10-7":                      {612097},
+		"10-diy":                    {612097},
+		"10-twitch":                 {612097},
+		"100-5":                     {597909},
+		"189f2f04a378c02-1":         {612097},
+		"2011-2":                    {597917},
+		"2011-3":                    {597917},
+		"2c61c818687ed09-1":         {612097},
+		"5-diy-4":                   {612097},
+		"@andymcdandycdn":           {640212},
+		"@lividjava":                {651654},
+		"@mhx":                      {653957},
+		"@tipwhatyoulike":           {599792},
+		"@wibbels":                  {612195},
+		"@yisraeldov":               {647416},
+		"beyaz-hap-biseks-el-evlat": {657957},
+		"bilgisayar-al-t-rma-s-recinde-ya-ananlar": {657957},
+		"brave-como-ganhar-dinheiro-todos-os-dias": {598494},
+		"c81e728d9d4c2f6-1":                        {598178},
+		"call-of-duty-world-war-2":                 {597935},
+		"chain-reaction":                           {597940},
+		"commodore-64-an-lar-ve-oyunlar":           {657957},
+		"counter-strike-global-offensive-gameplay": {597900},
+		"dead-island-riptide-co-op-walkthrough-2":  {597904, 598105},
+		"diy-10": {612097},
+		"diy-11": {612097},
+		"diy-13": {612097},
+		"diy-14": {612097},
+		"diy-19": {612097},
+		"diy-4":  {612097},
+		"diy-6":  {612097},
+		"diy-7":  {612097},
+		"diy-9":  {612097},
+		"doktor-ve-patron-sahnesinin-haz-rl-k-ve": {657957},
+		"eat-the-street":                          {597910},
+		"fallout-4-modded":                        {597901},
+		"fallout-4-walkthrough":                   {597900},
+		"filmli-efecast-129-film-inde-film-inde":  {657957},
+		"filmli-efecast-130-ger-ek-hayatta-anime": {657957},
+		"filmli-efecast-97-netflix-filmi-form-l":  {657957},
+		"for-honor-2":                             {597932},
+		"for-honor-4":                             {597932},
+		"gta-5":                                   {597902},
+		"gta-5-2":                                 {597902},
+		"helldriver-g-n-n-ekstrem-filmi":          {657957},
+		"hi-4":                                    {597933},
+		"hi-5":                                    {597933},
+		"hi-7":                                    {597933},
+		"kizoa-movie-video-slideshow-maker":       {597900, 597932},
+		"l1011widebody-friends-let-s-play-3":      {598070},
+		"lbry":                                    {608276},
+		"lets-play-spore-with":                    {597930},
+		"madants":                                 {625032},
+		"mechwarrior-2-soundtrack-clan-jade":      {598070},
+		"milo-forbidden-conversation":             {655173},
+		"mobile-record":                           {597910},
+		"mouths":                                  {607379},
+		"mp-aleyna-tilki-nin-zorla-seyrettirilen":  {657957},
+		"mp-atat-rk-e-eytan-diyen-yunan-as-ll":     {657957},
+		"mp-bah-eli-calan-avukatlar-yla-g-r-s-n":   {657957},
+		"mp-bu-podcast-babalar-in":                 {657957},
+		"mp-bu-podcasti-akp-li-tan-d-klar-n-za":    {657957},
+		"mp-gaziantep-te-tacizle-su-lan-p-dayak":   {650409},
+		"mp-hatipo-lu-nun-ermeni-bir-ocu-u-canl":   {657957},
+		"mp-k-rt-annelerin-hdp-ye-tepkisi":         {657957},
+		"mp-kenan-sofuo-lu-nun-mamo-lu-na-destek":  {657957},
+		"mp-mamo-lu-nun-muhafazakar-g-r-nmesi":     {657957},
+		"mp-mhp-akp-gerginli-i":                    {657957},
+		"mp-otob-ste-t-rkle-meyin-diye-ba-ran-svi": {657957},
+		"mp-pace-i-kazand-m-diyip-21-bin-dolar":    {657957},
+		"mp-rusya-da-kad-nlara-tecav-zc-s-n-ld":    {657957},
+		"mp-s-n-rs-z-nafakan-n-kalkmas-adil-mi":    {657957},
+		"mp-susamam-ark-s-ve-serkan-nci-nin-ark":   {657957},
+		"mp-y-lmaz-zdil-in-kitap-paralar-yla-yard": {657957},
+		"mp-yang-n-u-aklar-pahal-diyen-orman":      {657957},
+		"mp-yeni-zelanda-katliam-ndan-siyasi-rant": {657957},
+		"my-edited-video-4":                        {597932},
+		"my-live-stream-with-du-recorder":          {597900},
+		"my-live-stream-with-du-recorder-3":        {597900},
+		"new-channel-intro":                        {598235},
+		"paladins-3":                               {597900},
+		"popstar-sahnesi-kamera-arkas-g-r-nt-leri": {657957},
+		"retro-bilgisayar-bulu-mas":                {657957},
+		"scp-t-rk-e-scp-002-canl-oda":              {657957},
+		"steep":                                    {597900},
+		"stephen-hicks-postmodernism-reprise":      {655173},
+		"super-smash-bros-u-brawl-co-op-event":     {595841},
+		"super-smash-bros-u-super-mario-u-smash":   {595839},
+		"super-smash-bros-u-zelda-smash-series":    {595841},
+		"superonline-fiber-den-efsane-kaz-k-yedim": {657957},
+		"talking-about-my-channel-and-much-more-5": {597936},
+		"test1337reflector356":                     {627814},
+		"the-last-of-us-remastered-2":              {597915},
+		"tom-clancy-s-ghost-recon-wildlands-2":     {597916},
+		"tom-clancy-s-rainbow-six-siege-3":         {597935},
+		"wwe-2k18-with-that-guy-and-tricky":        {597901},
+		"yay-nc-bob-afet-kamera-arkas":             {657957},
+	}
+}

claimtrie/param/general.go

@@ -0,0 +1,74 @@
+package param
+
+import "github.com/btcsuite/btcd/wire"
+
+type ClaimTrieParams struct {
+	MaxActiveDelay    int32
+	ActiveDelayFactor int32
+
+	MaxNodeManagerCacheSize int
+
+	OriginalClaimExpirationTime       int32
+	ExtendedClaimExpirationTime       int32
+	ExtendedClaimExpirationForkHeight int32
+
+	MaxRemovalWorkaroundHeight int32
+
+	NormalizedNameForkHeight    int32
+	AllClaimsInMerkleForkHeight int32
+}
+
+var (
+	ActiveParams = MainNet
+
+	MainNet = ClaimTrieParams{
+		MaxActiveDelay:          4032,
+		ActiveDelayFactor:       32,
+		MaxNodeManagerCacheSize: 32000,
+
+		OriginalClaimExpirationTime:       262974,
+		ExtendedClaimExpirationTime:       2102400,
+		ExtendedClaimExpirationForkHeight: 400155, // https://lbry.io/news/hf1807
+		MaxRemovalWorkaroundHeight:        658300,
+		NormalizedNameForkHeight:          539940, // targeting 21 March 2019}, https://lbry.com/news/hf1903
+		AllClaimsInMerkleForkHeight:       658309, // targeting 30 Oct 2019}, https://lbry.com/news/hf1910
+	}
+
+	TestNet = ClaimTrieParams{
+		MaxActiveDelay:          4032,
+		ActiveDelayFactor:       32,
+		MaxNodeManagerCacheSize: 32000,
+
+		OriginalClaimExpirationTime:       262974,
+		ExtendedClaimExpirationTime:       2102400,
+		ExtendedClaimExpirationForkHeight: 278160,
+		MaxRemovalWorkaroundHeight:        1, // if you get a hash mismatch, come back to this
+		NormalizedNameForkHeight:          993380,
+		AllClaimsInMerkleForkHeight:       1198559,
+	}
+
+	Regtest = ClaimTrieParams{
+		MaxActiveDelay:          4032,
+		ActiveDelayFactor:       32,
+		MaxNodeManagerCacheSize: 32000,
+
+		OriginalClaimExpirationTime:       500,
+		ExtendedClaimExpirationTime:       600,
+		ExtendedClaimExpirationForkHeight: 800,
+		MaxRemovalWorkaroundHeight:        -1,
+		NormalizedNameForkHeight:          250,
+		AllClaimsInMerkleForkHeight:       349,
+	}
+)
+
+func SetNetwork(net wire.BitcoinNet) {
+
+	switch net {
+	case wire.MainNet:
+		ActiveParams = MainNet
+	case wire.TestNet3:
+		ActiveParams = TestNet
+	case wire.TestNet, wire.SimNet: // "regtest"
+		ActiveParams = Regtest
+	}
+}

claimtrie/param/takeovers.go

@@ -0,0 +1,451 @@
+package param
+
+var TakeoverWorkarounds = generateTakeoverWorkarounds()
+
+func generateTakeoverWorkarounds() map[string]int { // TODO: the values here are unused; bools would probably be better
+	return map[string]int{
+		"496856_HunterxHunterAMV":                            496835,
+		"542978_namethattune1":                               542429,
+		"543508_namethattune-5":                              543306,
+		"546780_forecasts":                                   546624,
+		"548730_forecasts":                                   546780,
+		"551540_forecasts":                                   548730,
+		"552380_chicthinkingofyou":                           550804,
+		"560363_takephotowithlbryteam":                       559962,
+		"563710_test-img":                                    563700,
+		"566750_itila":                                       543261,
+		"567082_malabarismo-com-bolas-de-futebol-vs-chap":    563592,
+		"596860_180mphpullsthrougheurope":                    596757,
+		"617743_vaccines":                                    572756,
+		"619609_copface-slamshandcuffedteengirlintoconcrete": 539940,
+		"620392_banker-exposes-satanic-elite":                597788,
+		"624997_direttiva-sulle-armi-ue-in-svizzera-di":      567908,
+		"624997_best-of-apex":                                585580,
+		"629970_cannot-ignore-my-veins":                      629914,
+		"633058_bio-waste-we-programmed-your-brain":          617185,
+		"633601_macrolauncher-overview-first-look":           633058,
+		"640186_its-up-to-you-and-i-2019":                    639116,
+		"640241_tor-eas-3-20":                                592645,
+		"640522_seadoxdark":                                  619531,
+		"640617_lbry-przewodnik-1-instalacja":                451186,
+		"640623_avxchange-2019-the-next-netflix-spotify":     606790,
+		"640684_algebra-introduction":                        624152,
+		"640684_a-high-school-math-teacher-does-a":           600885,
+		"640684_another-random-life-update":                  600884,
+		"640684_who-is-the-taylor-series-for":                600882,
+		"640684_tedx-talk-released":                          612303,
+		"640730_e-mental":                                    615375,
+		"641143_amiga-1200-bespoke-virgin-cinema":            623542,
+		"641161_dreamscape-432-omega":                        618894,
+		"641162_2019-topstone-carbon-force-etap-axs-bike":    639107,
+		"641186_arin-sings-big-floppy-penis-live-jazz-2":     638904,
+		"641421_edward-snowden-on-bitcoin-and-privacy":       522729,
+		"641421_what-is-libra-facebook-s-new":                598236,
+		"641421_what-are-stablecoins-counter-party-risk":     583508,
+		"641421_anthony-pomp-pompliano-discusses-crypto":     564416,
+		"641421_tim-draper-crypto-invest-summit-2019":        550329,
+		"641421_mass-adoption-and-what-will-it-take-to":      549781,
+		"641421_dragonwolftech-youtube-channel-trailer":      567128,
+		"641421_naomi-brockwell-s-weekly-crypto-recap":       540006,
+		"641421_blockchain-based-youtube-twitter":            580809,
+		"641421_andreas-antonopoulos-on-privacy-privacy":     533522,
+		"641817_mexico-submits-and-big-tech-worsens":         582977,
+		"641817_why-we-need-travel-bans":                     581354,
+		"641880_censored-by-patreon-bitchute-shares":         482460,
+		"641880_crypto-wonderland":                           485218,
+		"642168_1-diabolo-julio-cezar-16-cbmcp-freestyle":    374999,
+		"642314_tough-students":                              615780,
+		"642697_gamercauldronep2":                            642153,
+		"643406_the-most-fun-i-ve-had-in-a-long-time":        616506,
+		"643893_spitshine69-and-uk-freedom-audits":           616876,
+		"644480_my-mum-getting-attacked-a-duck":              567624,
+		"644486_the-cryptocurrency-experiment":               569189,
+		"644486_tag-you-re-it":                               558316,
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+		"655173_23-minutes-from-maps-of-meaning-the":         413749,
+		"655173_milo-forbidden-conversation":                 578493,
+		"655173_jp-wnjbasba-qw":                              539940,
+		"655173_uk-12-rules-tour-october-and-november":       462849,
+		"655173_2015-maps-of-meaning-10-culture-anomaly":     578465,
+		"655173_ayaan-hirsi-ali-islam-mecca-vs-medina":       285452,
+		"655173_jp-f9393el2z1i":                              539940,
+		"655173_campus-indoctrination-the-parasitization":    285453,
+		"655173_jp-owgc63khcl8":                              539940,
+		"655173_the-death-and-resurrection-of-christ-a":      413749,
+		"655173_01-harris-weinstein-peterson-discussion":     430896,
+		"655173_enlightenment-now-steven-pinker-jb":          413749,
+		"655173_the-lindsay-shepherd-affair-update":          413749,
+		"655173_jp-g3fwumq5k8i":                              539940,
+		"655173_jp-evvs3l-abv4":                              539940,
+		"655173_former-australian-deputy-pm-john":            413750,
+		"655173_message-to-my-korean-readers-90-seconds":     477424,
+		"655173_jp--0xbomwjkgm":                              539940,
+		"655173_ben-shapiro-jordan-peterson-and-a-12":        413749,
+		"655173_jp-91jwsb7zyhw":                              539940,
+		"655173_deconstruction-the-lindsay-shepherd":         299272,
+		"655173_september-patreon-q-a":                       285451,
+		"655173_jp-2c3m0tt5kce":                              539940,
+		"655173_australia-s-john-anderson-dr-jordan-b":       413749,
+		"655173_jp-hdrlq7dpiws":                              539940,
+		"655173_stephen-hicks-postmodernism-reprise":         578480,
+		"655173_october-patreon-q-a":                         285451,
+		"655173_an-animated-intro-to-truth-order-and":        413749,
+		"655173_jp-bsh37-x5rny":                              539940,
+		"655173_january-2019-q-a":                            503477,
+		"655173_comedians-canaries-and-coalmines":            498586,
+		"655173_the-democrats-apology-and-promise":           465433,
+		"655173_jp-s4c-jodptn8":                              539940,
+		"655173_2014-personality-lecture-16-extraversion":    578465,
+		"655173_dr-jordan-b-peterson-on-femsplainers":        490395,
+		"655173_higher-ed-our-cultural-inflection-point":     527291,
+		"655173_archetype-reality-friendship-and":            519736,
+		"655173_sir-roger-scruton-dr-jordan-b-peterson":      490395,
+		"655173_jp-cf2nqmqifxc":                              539940,
+		"655173_penguin-uk-12-rules-for-life":                413749,
+		"655173_march-2019-q-and-a":                          537138,
+		"655173_jp-ne5vbomsqjc":                              539940,
+		"655173_dublin-london-harris-murray-new-usa-12":      413749,
+		"655173_12-rules-12-cities-tickets-now-available":    413749,
+		"655173_jp-j9j-bvdrgdi":                              539940,
+		"655173_responsibility-conscience-and-meaning":       499123,
+		"655173_04-harris-murray-peterson-discussion":        436678,
+		"655173_jp-ayhaz9k008q":                              539940,
+		"655173_with-jocko-willink-the-catastrophe-of":       490395,
+		"655173_interview-with-the-grievance-studies":        501296,
+		"655173_russell-brand-jordan-b-peterson-under":       413750,
+		"655173_goodbye-to-patreon":                          496771,
+		"655173_revamped-podcast-announcement-with":          540943,
+		"655173_swedes-want-to-know":                         285453,
+		"655173_auckland-clip-2-the-four-fundamental":        607892,
+		"655173_jp-dtirzqmgbdm":                              539940,
+		"655173_political-correctness-a-force-for-good-a":    413750,
+		"655173_sean-plunket-full-interview-new-zealand":     597638,
+		"655173_q-a-the-meaning-and-reality-of":              616984,
+		"655173_lecture-and-q-a-with-jordan-peterson-the":    413749,
+		"655173_2017-personality-07-carl-jung-and-the":       578465,
+		"655173_nina-paley-animator-extraordinaire":          413750,
+		"655173_truth-as-the-antidote-to-suffering-with":     455127,
+		"655173_bishop-barron-word-on-fire":                  599814,
+		"655173_zizek-vs-peterson-april-19":                  527291,
+		"655173_revamped-podcast-with-westwood-one":          540943,
+		"655173_2016-11-19-university-of-toronto-free":       578465,
+		"655173_jp-1emrmtrj5jc":                              539940,
+		"655173_who-is-joe-rogan-with-jordan-peterson":       585578,
+		"655173_who-dares-say-he-believes-in-god":            581738,
+		"655252_games-with-live2d":                           589978,
+		"655252_kaenbyou-rin-live2d":                         589978,
+		"655374_steam-groups-are-crazy":                      607590,
+		"655379_asmr-captain-falcon-happily-beats-you-up":    644574,
+		"655379_pixel-art-series-5-link-holding-the":         442952,
+		"655379_who-can-cross-the-planck-length-the-hero":    610830,
+		"655379_ssbb-the-yoshi-grab-release-crash":           609747,
+		"655379_tas-captain-falcon-s-bizarre-adventure":      442958,
+		"655379_super-smash-bros-in-360-test":                442963,
+		"655379_what-if-luigi-was-b-u-f-f":                   442971,
+		"655803_sun-time-lapse-test-7":                       610634,
+		"655952_upper-build-complete":                        591728,
+		"656758_cryptocurrency-awareness-adoption-the":       541770,
+		"656829_3d-printing-technologies-comparison":         462685,
+		"656829_3d-printing-for-everyone":                    462685,
+		"657052_tni-punya-ilmu-kanuragan-gaya-baru":          657045,
+		"657052_papa-sunimah-nelpon-sri-utami-emon":          657045,
+		"657274_rapforlife-4-win":                            656856,
+		"657274_bizzilion-proof-of-withdrawal":               656856,
+		"657420_quick-drawing-prince-tribute-colored":        605630,
+		"657453_white-boy-tom-mcdonald-facts":                597169,
+		"657453_is-it-ok-to-look-when-you-with-your-girl":    610508,
+		"657584_need-for-speed-ryzen-5-1600-gtx-1050-ti":     657161,
+		"657584_quantum-break-ryzen-5-1600-gtx-1050-ti-4":    657161,
+		"657584_nightcore-legends-never-die":                 657161,
+		"657706_mtb-enduro-ferragosto-2019-sestri":           638904,
+		"657706_warface-free-for-all":                        638908,
+		"657782_nick-warren-at-loveland-but-not-really":      444299,
+		"658098_le-temps-nous-glisse-entre-les-doigts":       600099,
+	}
+}

claimtrie/temporal/repo.go

@@ -0,0 +1,9 @@
+package temporal
+
+// Repo defines APIs for Temporal to access persistence layer.
+type Repo interface {
+	SetNodesAt(names [][]byte, heights []int32) error
+	NodesAt(height int32) ([][]byte, error)
+	Close() error
+	Flush() error
+}

claimtrie/temporal/temporalrepo/memory.go

@@ -0,0 +1,45 @@
+package temporalrepo
+
+type Memory struct {
+	cache map[int32]map[string]bool
+}
+
+func NewMemory() *Memory {
+	return &Memory{
+		cache: map[int32]map[string]bool{},
+	}
+}
+
+func (repo *Memory) SetNodesAt(names [][]byte, heights []int32) error {
+
+	for i, height := range heights {
+		c, ok := repo.cache[height]
+		if !ok {
+			c = map[string]bool{}
+			repo.cache[height] = c
+		}
+		name := string(names[i])
+		c[name] = true
+	}
+
+	return nil
+}
+
+func (repo *Memory) NodesAt(height int32) ([][]byte, error) {
+
+	var names [][]byte
+
+	for name := range repo.cache[height] {
+		names = append(names, []byte(name))
+	}
+
+	return names, nil
+}
+
+func (repo *Memory) Close() error {
+	return nil
+}
+
+func (repo *Memory) Flush() error {
+	return nil
+}

claimtrie/temporal/temporalrepo/pebble.go

@@ -0,0 +1,87 @@
+package temporalrepo
+
+import (
+	"bytes"
+	"encoding/binary"
+
+	"github.com/pkg/errors"
+
+	"github.com/cockroachdb/pebble"
+)
+
+type Pebble struct {
+	db *pebble.DB
+}
+
+func NewPebble(path string) (*Pebble, error) {
+
+	db, err := pebble.Open(path, &pebble.Options{Cache: pebble.NewCache(16 << 20)})
+	repo := &Pebble{db: db}
+
+	return repo, errors.Wrapf(err, "unable to open %s", path)
+}
+
+func (repo *Pebble) SetNodesAt(name [][]byte, heights []int32) error {
+
+	// key format: height(4B) + 0(1B) + name(varable length)
+	key := bytes.NewBuffer(nil)
+	batch := repo.db.NewBatch()
+	defer batch.Close()
+	for i, name := range name {
+		key.Reset()
+		binary.Write(key, binary.BigEndian, heights[i])
+		binary.Write(key, binary.BigEndian, byte(0))
+		key.Write(name)
+
+		err := batch.Set(key.Bytes(), nil, pebble.NoSync)
+		if err != nil {
+			return errors.Wrap(err, "in set")
+		}
+	}
+	return errors.Wrap(batch.Commit(pebble.NoSync), "in commit")
+}
+
+func (repo *Pebble) NodesAt(height int32) ([][]byte, error) {
+
+	prefix := bytes.NewBuffer(nil)
+	binary.Write(prefix, binary.BigEndian, height)
+	binary.Write(prefix, binary.BigEndian, byte(0))
+
+	end := bytes.NewBuffer(nil)
+	binary.Write(end, binary.BigEndian, height)
+	binary.Write(end, binary.BigEndian, byte(1))
+
+	prefixIterOptions := &pebble.IterOptions{
+		LowerBound: prefix.Bytes(),
+		UpperBound: end.Bytes(),
+	}
+
+	var names [][]byte
+
+	iter := repo.db.NewIter(prefixIterOptions)
+	for iter.First(); iter.Valid(); iter.Next() {
+		// Skipping the first 5 bytes (height and a null byte), we get the name.
+		name := make([]byte, len(iter.Key())-5)
+		copy(name, iter.Key()[5:]) // iter.Key() reuses its buffer
+		names = append(names, name)
+	}
+
+	return names, errors.Wrap(iter.Close(), "in close")
+}
+
+func (repo *Pebble) Close() error {
+
+	err := repo.db.Flush()
+	if err != nil {
+		// if we fail to close are we going to try again later?
+		return errors.Wrap(err, "on flush")
+	}
+
+	err = repo.db.Close()
+	return errors.Wrap(err, "on close")
+}
+
+func (repo *Pebble) Flush() error {
+	_, err := repo.db.AsyncFlush()
+	return err
+}

claimtrie/temporal/temporalrepo/temporalrepo_test.go

@@ -0,0 +1,80 @@
+package temporalrepo
+
+import (
+	"testing"
+
+	"github.com/btcsuite/btcd/claimtrie/temporal"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestMemory(t *testing.T) {
+
+	repo := NewMemory()
+	testTemporalRepo(t, repo)
+}
+
+func TestPebble(t *testing.T) {
+
+	repo, err := NewPebble(t.TempDir())
+	require.NoError(t, err)
+
+	testTemporalRepo(t, repo)
+}
+
+func testTemporalRepo(t *testing.T, repo temporal.Repo) {
+
+	r := require.New(t)
+
+	nameA := []byte("a")
+	nameB := []byte("b")
+	nameC := []byte("c")
+
+	testcases := []struct {
+		name    []byte
+		heights []int32
+	}{
+		{nameA, []int32{1, 3, 2}},
+		{nameA, []int32{2, 3}},
+		{nameB, []int32{5, 4}},
+		{nameB, []int32{5, 1}},
+		{nameC, []int32{4, 3, 8}},
+	}
+
+	for _, i := range testcases {
+		names := make([][]byte, 0, len(i.heights))
+		for range i.heights {
+			names = append(names, i.name)
+		}
+		err := repo.SetNodesAt(names, i.heights)
+		r.NoError(err)
+	}
+
+	// a: 1, 2, 3
+	// b: 1, 5, 4
+	// c: 4, 3, 8
+
+	names, err := repo.NodesAt(2)
+	r.NoError(err)
+	r.ElementsMatch([][]byte{nameA}, names)
+
+	names, err = repo.NodesAt(5)
+	r.NoError(err)
+	r.ElementsMatch([][]byte{nameB}, names)
+
+	names, err = repo.NodesAt(8)
+	r.NoError(err)
+	r.ElementsMatch([][]byte{nameC}, names)
+
+	names, err = repo.NodesAt(1)
+	r.NoError(err)
+	r.ElementsMatch([][]byte{nameA, nameB}, names)
+
+	names, err = repo.NodesAt(4)
+	r.NoError(err)
+	r.ElementsMatch([][]byte{nameB, nameC}, names)
+
+	names, err = repo.NodesAt(3)
+	r.NoError(err)
+	r.ElementsMatch([][]byte{nameA, nameC}, names)
+}

cmd/addblock/config.go

@@ -24,7 +24,7 @@ const (
 )
 
 var (
-	btcdHomeDir     = btcutil.AppDataDir("btcd", false)
+	btcdHomeDir     = btcutil.AppDataDir("chain", false)
 	defaultDataDir  = filepath.Join(btcdHomeDir, "data")
 	knownDbTypes    = database.SupportedDrivers()
 	activeNetParams = &chaincfg.MainNetParams

cmd/btcctl/config.go

@@ -27,10 +27,10 @@ const (
 )
 
 var (
-	btcdHomeDir           = btcutil.AppDataDir("btcd", false)
-	btcctlHomeDir         = btcutil.AppDataDir("btcctl", false)
-	btcwalletHomeDir      = btcutil.AppDataDir("btcwallet", false)
-	defaultConfigFile     = filepath.Join(btcctlHomeDir, "btcctl.conf")
+	btcdHomeDir           = btcutil.AppDataDir("chain", false)
+	btcctlHomeDir         = btcutil.AppDataDir("chainctl", false)
+	btcwalletHomeDir      = btcutil.AppDataDir("chainwallet", false)
+	defaultConfigFile     = filepath.Join(btcctlHomeDir, "chainctl.conf")
 	defaultRPCServer      = "localhost"
 	defaultRPCCertFile    = filepath.Join(btcdHomeDir, "rpc.cert")
 	defaultWalletCertFile = filepath.Join(btcwalletHomeDir, "rpc.cert")
@@ -123,7 +123,7 @@ func normalizeAddress(addr string, chain *chaincfg.Params, useWallet bool) (stri
 			if useWallet {
 				defaultPort = "18332"
 			} else {
-				defaultPort = "18334"
+				defaultPort = "19245"
 			}
 		case &chaincfg.SimNetParams:
 			if useWallet {
@@ -149,7 +149,7 @@ func normalizeAddress(addr string, chain *chaincfg.Params, useWallet bool) (stri
 			if useWallet {
 				defaultPort = "8332"
 			} else {
-				defaultPort = "8334"
+				defaultPort = "9245"
 			}
 		}
 
@@ -231,9 +231,9 @@ func loadConfig() (*config, []string, error) {
 		// Use config file for RPC server to create default btcctl config
 		var serverConfigPath string
 		if preCfg.Wallet {
-			serverConfigPath = filepath.Join(btcwalletHomeDir, "btcwallet.conf")
+			serverConfigPath = filepath.Join(btcwalletHomeDir, "chainwallet.conf")
 		} else {
-			serverConfigPath = filepath.Join(btcdHomeDir, "btcd.conf")
+			serverConfigPath = filepath.Join(btcdHomeDir, "chain.conf")
 		}
 
 		err := createDefaultConfigFile(preCfg.ConfigFile, serverConfigPath)

cmd/findcheckpoint/config.go

@@ -25,7 +25,7 @@ const (
 )
 
 var (
-	btcdHomeDir     = btcutil.AppDataDir("btcd", false)
+	btcdHomeDir     = btcutil.AppDataDir("chain", false)
 	defaultDataDir  = filepath.Join(btcdHomeDir, "data")
 	knownDbTypes    = database.SupportedDrivers()
 	activeNetParams = &chaincfg.MainNetParams

config.go

@@ -35,11 +35,11 @@ import (
 )
 
 const (
-	defaultConfigFilename        = "btcd.conf"
+	defaultConfigFilename        = "chain.conf"
 	defaultDataDirname           = "data"
 	defaultLogLevel              = "info"
 	defaultLogDirname            = "logs"
-	defaultLogFilename           = "btcd.log"
+	defaultLogFilename           = "chain.log"
 	defaultMaxPeers              = 125
 	defaultBanDuration           = time.Hour * 24
 	defaultBanThreshold          = 100
@@ -62,13 +62,13 @@ const (
 	defaultMaxOrphanTransactions = 100
 	defaultMaxOrphanTxSize       = 100000
 	defaultSigCacheMaxSize       = 100000
-	sampleConfigFilename         = "sample-btcd.conf"
+	sampleConfigFilename         = "sample-chain.conf"
 	defaultTxIndex               = false
 	defaultAddrIndex             = false
 )
 
 var (
-	defaultHomeDir     = btcutil.AppDataDir("btcd", false)
+	defaultHomeDir     = btcutil.AppDataDir("chain", false)
 	defaultConfigFile  = filepath.Join(defaultHomeDir, defaultConfigFilename)
 	defaultDataDir     = filepath.Join(defaultHomeDir, defaultDataDirname)
 	knownDbTypes       = database.SupportedDrivers()
@@ -108,6 +108,9 @@ type config struct {
 	BlockPrioritySize    uint32        `long:"blockprioritysize" description:"Size in bytes for high-priority/low-fee transactions when creating a block"`
 	BlocksOnly           bool          `long:"blocksonly" description:"Do not accept transactions from remote peers."`
 	ConfigFile           string        `short:"C" long:"configfile" description:"Path to configuration file"`
+	ClaimTrieImpl        string        `long:"clmtimpl" description:"Implementation of ClaimTrie"`
+	ClaimTrieRecord      bool          `long:"clmtrecord" description:"Record claim operations made to ClaimTrie"`
+	ClaimTrieHeight      uint32        `long:"clmtheight" description:"Reset height of ClaimTrie"`
 	ConnectPeers         []string      `long:"connect" description:"Connect only to the specified peers at startup"`
 	CPUProfile           string        `long:"cpuprofile" description:"Write CPU profile to the specified file"`
 	DataDir              string        `short:"b" long:"datadir" description:"Directory to store data"`

config_test.go

@@ -20,16 +20,16 @@ func TestCreateDefaultConfigFile(t *testing.T) {
 	if !ok {
 		t.Fatalf("Failed finding config file path")
 	}
-	sampleConfigFile := filepath.Join(filepath.Dir(path), "sample-btcd.conf")
+	sampleConfigFile := filepath.Join(filepath.Dir(path), "sample-chain.conf")
 
 	// Setup a temporary directory
-	tmpDir, err := ioutil.TempDir("", "btcd")
+	tmpDir, err := ioutil.TempDir("", "chain")
 	if err != nil {
 		t.Fatalf("Failed creating a temporary directory: %v", err)
 	}
 	testpath := filepath.Join(tmpDir, "test.conf")
 
-	// copy config file to location of btcd binary
+	// copy config file to location of chain binary
 	data, err := ioutil.ReadFile(sampleConfigFile)
 	if err != nil {
 		t.Fatalf("Failed reading sample config file: %v", err)
@@ -38,7 +38,7 @@ func TestCreateDefaultConfigFile(t *testing.T) {
 	if err != nil {
 		t.Fatalf("Failed obtaining app path: %v", err)
 	}
-	tmpConfigFile := filepath.Join(appPath, "sample-btcd.conf")
+	tmpConfigFile := filepath.Join(appPath, "sample-chain.conf")
 	err = ioutil.WriteFile(tmpConfigFile, data, 0644)
 	if err != nil {
 		t.Fatalf("Failed copying sample config file: %v", err)

database/cmd/dbtool/globalconfig.go

@@ -18,7 +18,7 @@ import (
 )
 
 var (
-	btcdHomeDir     = btcutil.AppDataDir("btcd", false)
+	btcdHomeDir     = btcutil.AppDataDir("chain", false)
 	knownDbTypes    = database.SupportedDrivers()
 	activeNetParams = &chaincfg.MainNetParams
 

database/error_test.go

@@ -1,97 +0,0 @@
-// Copyright (c) 2015-2016 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package database_test
-
-import (
-	"errors"
-	"testing"
-
-	"github.com/btcsuite/btcd/database"
-)
-
-// TestErrorCodeStringer tests the stringized output for the ErrorCode type.
-func TestErrorCodeStringer(t *testing.T) {
-	tests := []struct {
-		in   database.ErrorCode
-		want string
-	}{
-		{database.ErrDbTypeRegistered, "ErrDbTypeRegistered"},
-		{database.ErrDbUnknownType, "ErrDbUnknownType"},
-		{database.ErrDbDoesNotExist, "ErrDbDoesNotExist"},
-		{database.ErrDbExists, "ErrDbExists"},
-		{database.ErrDbNotOpen, "ErrDbNotOpen"},
-		{database.ErrDbAlreadyOpen, "ErrDbAlreadyOpen"},
-		{database.ErrInvalid, "ErrInvalid"},
-		{database.ErrCorruption, "ErrCorruption"},
-		{database.ErrTxClosed, "ErrTxClosed"},
-		{database.ErrTxNotWritable, "ErrTxNotWritable"},
-		{database.ErrBucketNotFound, "ErrBucketNotFound"},
-		{database.ErrBucketExists, "ErrBucketExists"},
-		{database.ErrBucketNameRequired, "ErrBucketNameRequired"},
-		{database.ErrKeyRequired, "ErrKeyRequired"},
-		{database.ErrKeyTooLarge, "ErrKeyTooLarge"},
-		{database.ErrValueTooLarge, "ErrValueTooLarge"},
-		{database.ErrIncompatibleValue, "ErrIncompatibleValue"},
-		{database.ErrBlockNotFound, "ErrBlockNotFound"},
-		{database.ErrBlockExists, "ErrBlockExists"},
-		{database.ErrBlockRegionInvalid, "ErrBlockRegionInvalid"},
-		{database.ErrDriverSpecific, "ErrDriverSpecific"},
-
-		{0xffff, "Unknown ErrorCode (65535)"},
-	}
-
-	// Detect additional error codes that don't have the stringer added.
-	if len(tests)-1 != int(database.TstNumErrorCodes) {
-		t.Errorf("It appears an error code was added without adding " +
-			"an associated stringer test")
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		result := test.in.String()
-		if result != test.want {
-			t.Errorf("String #%d\ngot: %s\nwant: %s", i, result,
-				test.want)
-			continue
-		}
-	}
-}
-
-// TestError tests the error output for the Error type.
-func TestError(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		in   database.Error
-		want string
-	}{
-		{
-			database.Error{Description: "some error"},
-			"some error",
-		},
-		{
-			database.Error{Description: "human-readable error"},
-			"human-readable error",
-		},
-		{
-			database.Error{
-				ErrorCode:   database.ErrDriverSpecific,
-				Description: "some error",
-				Err:         errors.New("driver-specific error"),
-			},
-			"some error: driver-specific error",
-		},
-	}
-
-	t.Logf("Running %d tests", len(tests))
-	for i, test := range tests {
-		result := test.in.Error()
-		if result != test.want {
-			t.Errorf("Error #%d\n got: %s want: %s", i, result,
-				test.want)
-			continue
-		}
-	}
-}

database/example_test.go

@@ -1,177 +0,0 @@
-// Copyright (c) 2015-2016 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package database_test
-
-import (
-	"bytes"
-	"fmt"
-	"os"
-	"path/filepath"
-
-	"github.com/btcsuite/btcd/chaincfg"
-	"github.com/btcsuite/btcd/database"
-	_ "github.com/btcsuite/btcd/database/ffldb"
-	"github.com/btcsuite/btcd/wire"
-	"github.com/btcsuite/btcutil"
-)
-
-// This example demonstrates creating a new database.
-func ExampleCreate() {
-	// This example assumes the ffldb driver is imported.
-	//
-	// import (
-	// 	"github.com/btcsuite/btcd/database"
-	// 	_ "github.com/btcsuite/btcd/database/ffldb"
-	// )
-
-	// Create a database and schedule it to be closed and removed on exit.
-	// Typically you wouldn't want to remove the database right away like
-	// this, nor put it in the temp directory, but it's done here to ensure
-	// the example cleans up after itself.
-	dbPath := filepath.Join(os.TempDir(), "examplecreate")
-	db, err := database.Create("ffldb", dbPath, wire.MainNet)
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-	defer os.RemoveAll(dbPath)
-	defer db.Close()
-
-	// Output:
-}
-
-// This example demonstrates creating a new database and using a managed
-// read-write transaction to store and retrieve metadata.
-func Example_basicUsage() {
-	// This example assumes the ffldb driver is imported.
-	//
-	// import (
-	// 	"github.com/btcsuite/btcd/database"
-	// 	_ "github.com/btcsuite/btcd/database/ffldb"
-	// )
-
-	// Create a database and schedule it to be closed and removed on exit.
-	// Typically you wouldn't want to remove the database right away like
-	// this, nor put it in the temp directory, but it's done here to ensure
-	// the example cleans up after itself.
-	dbPath := filepath.Join(os.TempDir(), "exampleusage")
-	db, err := database.Create("ffldb", dbPath, wire.MainNet)
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-	defer os.RemoveAll(dbPath)
-	defer db.Close()
-
-	// Use the Update function of the database to perform a managed
-	// read-write transaction.  The transaction will automatically be rolled
-	// back if the supplied inner function returns a non-nil error.
-	err = db.Update(func(tx database.Tx) error {
-		// Store a key/value pair directly in the metadata bucket.
-		// Typically a nested bucket would be used for a given feature,
-		// but this example is using the metadata bucket directly for
-		// simplicity.
-		key := []byte("mykey")
-		value := []byte("myvalue")
-		if err := tx.Metadata().Put(key, value); err != nil {
-			return err
-		}
-
-		// Read the key back and ensure it matches.
-		if !bytes.Equal(tx.Metadata().Get(key), value) {
-			return fmt.Errorf("unexpected value for key '%s'", key)
-		}
-
-		// Create a new nested bucket under the metadata bucket.
-		nestedBucketKey := []byte("mybucket")
-		nestedBucket, err := tx.Metadata().CreateBucket(nestedBucketKey)
-		if err != nil {
-			return err
-		}
-
-		// The key from above that was set in the metadata bucket does
-		// not exist in this new nested bucket.
-		if nestedBucket.Get(key) != nil {
-			return fmt.Errorf("key '%s' is not expected nil", key)
-		}
-
-		return nil
-	})
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-
-	// Output:
-}
-
-// This example demonstrates creating a new database, using a managed read-write
-// transaction to store a block, and using a managed read-only transaction to
-// fetch the block.
-func Example_blockStorageAndRetrieval() {
-	// This example assumes the ffldb driver is imported.
-	//
-	// import (
-	// 	"github.com/btcsuite/btcd/database"
-	// 	_ "github.com/btcsuite/btcd/database/ffldb"
-	// )
-
-	// Create a database and schedule it to be closed and removed on exit.
-	// Typically you wouldn't want to remove the database right away like
-	// this, nor put it in the temp directory, but it's done here to ensure
-	// the example cleans up after itself.
-	dbPath := filepath.Join(os.TempDir(), "exampleblkstorage")
-	db, err := database.Create("ffldb", dbPath, wire.MainNet)
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-	defer os.RemoveAll(dbPath)
-	defer db.Close()
-
-	// Use the Update function of the database to perform a managed
-	// read-write transaction and store a genesis block in the database as
-	// and example.
-	err = db.Update(func(tx database.Tx) error {
-		genesisBlock := chaincfg.MainNetParams.GenesisBlock
-		return tx.StoreBlock(btcutil.NewBlock(genesisBlock))
-	})
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-
-	// Use the View function of the database to perform a managed read-only
-	// transaction and fetch the block stored above.
-	var loadedBlockBytes []byte
-	err = db.Update(func(tx database.Tx) error {
-		genesisHash := chaincfg.MainNetParams.GenesisHash
-		blockBytes, err := tx.FetchBlock(genesisHash)
-		if err != nil {
-			return err
-		}
-
-		// As documented, all data fetched from the database is only
-		// valid during a database transaction in order to support
-		// zero-copy backends.  Thus, make a copy of the data so it
-		// can be used outside of the transaction.
-		loadedBlockBytes = make([]byte, len(blockBytes))
-		copy(loadedBlockBytes, blockBytes)
-		return nil
-	})
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-
-	// Typically at this point, the block could be deserialized via the
-	// wire.MsgBlock.Deserialize function or used in its serialized form
-	// depending on need.  However, for this example, just display the
-	// number of serialized bytes to show it was loaded as expected.
-	fmt.Printf("Serialized block size: %d bytes\n", len(loadedBlockBytes))
-
-	// Output:
-	// Serialized block size: 285 bytes
-}

database/ffldb/bench_test.go

@@ -1,97 +0,0 @@
-// Copyright (c) 2015-2016 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package ffldb
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/btcsuite/btcd/chaincfg"
-	"github.com/btcsuite/btcd/database"
-	"github.com/btcsuite/btcutil"
-)
-
-// BenchmarkBlockHeader benchmarks how long it takes to load the mainnet genesis
-// block header.
-func BenchmarkBlockHeader(b *testing.B) {
-	// Start by creating a new database and populating it with the mainnet
-	// genesis block.
-	dbPath := filepath.Join(os.TempDir(), "ffldb-benchblkhdr")
-	_ = os.RemoveAll(dbPath)
-	db, err := database.Create("ffldb", dbPath, blockDataNet)
-	if err != nil {
-		b.Fatal(err)
-	}
-	defer os.RemoveAll(dbPath)
-	defer db.Close()
-	err = db.Update(func(tx database.Tx) error {
-		block := btcutil.NewBlock(chaincfg.MainNetParams.GenesisBlock)
-		return tx.StoreBlock(block)
-	})
-	if err != nil {
-		b.Fatal(err)
-	}
-
-	b.ReportAllocs()
-	b.ResetTimer()
-	err = db.View(func(tx database.Tx) error {
-		blockHash := chaincfg.MainNetParams.GenesisHash
-		for i := 0; i < b.N; i++ {
-			_, err := tx.FetchBlockHeader(blockHash)
-			if err != nil {
-				return err
-			}
-		}
-		return nil
-	})
-	if err != nil {
-		b.Fatal(err)
-	}
-
-	// Don't benchmark teardown.
-	b.StopTimer()
-}
-
-// BenchmarkBlockHeader benchmarks how long it takes to load the mainnet genesis
-// block.
-func BenchmarkBlock(b *testing.B) {
-	// Start by creating a new database and populating it with the mainnet
-	// genesis block.
-	dbPath := filepath.Join(os.TempDir(), "ffldb-benchblk")
-	_ = os.RemoveAll(dbPath)
-	db, err := database.Create("ffldb", dbPath, blockDataNet)
-	if err != nil {
-		b.Fatal(err)
-	}
-	defer os.RemoveAll(dbPath)
-	defer db.Close()
-	err = db.Update(func(tx database.Tx) error {
-		block := btcutil.NewBlock(chaincfg.MainNetParams.GenesisBlock)
-		return tx.StoreBlock(block)
-	})
-	if err != nil {
-		b.Fatal(err)
-	}
-
-	b.ReportAllocs()
-	b.ResetTimer()
-	err = db.View(func(tx database.Tx) error {
-		blockHash := chaincfg.MainNetParams.GenesisHash
-		for i := 0; i < b.N; i++ {
-			_, err := tx.FetchBlock(blockHash)
-			if err != nil {
-				return err
-			}
-		}
-		return nil
-	})
-	if err != nil {
-		b.Fatal(err)
-	}
-
-	// Don't benchmark teardown.
-	b.StopTimer()
-}

database/ffldb/db.go

@@ -16,7 +16,7 @@ import (
 
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/btcsuite/btcd/database"
-	"github.com/btcsuite/btcd/database/internal/treap"
+	"github.com/btcsuite/btcd/database/ffldb/treap"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcutil"
 	"github.com/btcsuite/goleveldb/leveldb"

database/ffldb/dbcache.go

@@ -10,7 +10,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/btcsuite/btcd/database/internal/treap"
+	"github.com/btcsuite/btcd/database/ffldb/treap"
 	"github.com/btcsuite/goleveldb/leveldb"
 	"github.com/btcsuite/goleveldb/leveldb/iterator"
 	"github.com/btcsuite/goleveldb/leveldb/util"