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Merge btcnet repo into chaincfg directory.

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Dave Collins 2015-02-05 21:54:45 -06:00
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chaincfg
========
[![Build Status](http://img.shields.io/travis/btcsuite/btcd.svg)]
(https://travis-ci.org/btcsuite/btcd) [![ISC License]
(http://img.shields.io/badge/license-ISC-blue.svg)](http://copyfree.org)
Package chaincfg defines chain configuration parameters for the three standard
Bitcoin networks and provides the ability for callers to define their own custom
Bitcoin networks.
Although this package was primarily written for btcd, it has intentionally been
designed so it can be used as a standalone package for any projects needing to
use parameters for the standard Bitcoin networks or for projects needing to
define their own network.
## Sample Use
```Go
package main
import (
"flag"
"fmt"
"log"
"github.com/btcsuite/btcutil"
"github.com/btcsuite/btcd/chaincfg"
)
var testnet = flag.Bool("testnet", false, "operate on the testnet Bitcoin network")
// By default (without -testnet), use mainnet.
var chainParams = &chaincfg.MainNetParams
func main() {
flag.Parse()
// Modify active network parameters if operating on testnet.
if *testnet {
chainParams = &chaincfg.TestNet3Params
}
// later...
// Create and print new payment address, specific to the active network.
pubKeyHash := make([]byte, 20)
addr, err := btcutil.NewAddressPubKeyHash(pubKeyHash, chainParams)
if err != nil {
log.Fatal(err)
}
fmt.Println(addr)
}
```
## Documentation
[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)]
(http://godoc.org/github.com/btcsuite/btcd/chaincfg)
Full `go doc` style documentation for the project can be viewed online without
installing this package by using the GoDoc site
[here](http://godoc.org/github.com/btcsuite/btcd/chaincfg).
You can also view the documentation locally once the package is installed with
the `godoc` tool by running `godoc -http=":6060"` and pointing your browser to
http://localhost:6060/pkg/github.com/btcsuite/btcd/chaincfg
## Installation
```bash
$ go get github.com/btcsuite/btcd/chaincfg
```
## GPG Verification Key
All official release tags are signed by Conformal so users can ensure the code
has not been tampered with and is coming from Conformal. To verify the
signature perform the following:
- Download the public key from the Conformal website at
https://opensource.conformal.com/GIT-GPG-KEY-conformal.txt
- Import the public key into your GPG keyring:
```bash
gpg --import GIT-GPG-KEY-conformal.txt
```
- Verify the release tag with the following command where `TAG_NAME` is a
placeholder for the specific tag:
```bash
git tag -v TAG_NAME
```
## License
Package chaincfg is licensed under the [copyfree](http://copyfree.org) ISC
License.

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// Package chaincfg defines chain configuration parameters.
//
// In addition to the main Bitcoin network, which is intended for the transfer
// of monetary value, there also exists two currently active standard networks:
// regression test and testnet (version 3). These networks are incompatible
// with each other (each sharing a different genesis block) and software should
// handle errors where input intended for one network is used on an application
// instance running on a different network.
//
// For library packages, chaincfg provides the ability to lookup chain
// parameters and encoding magics when passed a *Params. Older APIs not updated
// to the new convention of passing a *Params may lookup the parameters for a
// wire.BitcoinNet using ParamsForNet, but be aware that this usage is
// deprecated and will be removed from chaincfg in the future.
//
// For main packages, a (typically global) var may be assigned the address of
// one of the standard Param vars for use as the application's "active" network.
// When a network parameter is needed, it may then be looked up through this
// variable (either directly, or hidden in a library call).
//
// package main
//
// import (
// "flag"
// "fmt"
// "log"
//
// "github.com/btcsuite/btcutil"
// "github.com/btcsuite/btcd/chaincfg"
// )
//
// var testnet = flag.Bool("testnet", false, "operate on the testnet Bitcoin network")
//
// // By default (without -testnet), use mainnet.
// var chainParams = &chaincfg.MainNetParams
//
// func main() {
// flag.Parse()
//
// // Modify active network parameters if operating on testnet.
// if *testnet {
// chainParams = &chaincfg.TestNet3Params
// }
//
// // later...
//
// // Create and print new payment address, specific to the active network.
// pubKeyHash := make([]byte, 20)
// addr, err := btcutil.NewAddressPubKeyHash(pubKeyHash, chainParams)
// if err != nil {
// log.Fatal(err)
// }
// fmt.Println(addr)
// }
//
// If an application does not use one of the three standard Bitcoin networks,
// a new Params struct may be created which defines the parameters for the
// non-standard network. As a general rule of thumb, all network parameters
// should be unique to the network, but parameter collisions can still occur
// (unfortunately, this is the case with regtest and testnet3 sharing magics).
package chaincfg

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// Copyright (c) 2014 Conformal Systems LLC.
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package chaincfg
import (
"time"
"github.com/btcsuite/btcd/wire"
)
// genesisCoinbaseTx is the coinbase transaction for the genesis blocks for
// the main network, regression test network, and test network (version 3).
var genesisCoinbaseTx = wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{
{
PreviousOutPoint: wire.OutPoint{
Hash: wire.ShaHash{},
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| */
},
Sequence: 0xffffffff,
},
},
TxOut: []*wire.TxOut{
{
Value: 0x12a05f200,
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, /* |._.| */
},
},
},
LockTime: 0,
}
// genesisHash is the hash of the first block in the block chain for the main
// network (genesis block).
var genesisHash = wire.ShaHash([wire.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,
})
// genesisMerkleRoot is the hash of the first transaction in the genesis block
// for the main network.
var genesisMerkleRoot = wire.ShaHash([wire.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,
})
// genesisBlock defines the genesis block of the block chain which serves as the
// public transaction ledger for the main network.
var genesisBlock = wire.MsgBlock{
Header: wire.BlockHeader{
Version: 1,
PrevBlock: wire.ShaHash{}, // 0000000000000000000000000000000000000000000000000000000000000000
MerkleRoot: genesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
Timestamp: time.Unix(0x495fab29, 0), // 2009-01-03 18:15:05 +0000 UTC
Bits: 0x1d00ffff, // 486604799 [00000000ffff0000000000000000000000000000000000000000000000000000]
Nonce: 0x7c2bac1d, // 2083236893
},
Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
}
// regTestGenesisHash is the hash of the first block in the block chain for the
// regression test network (genesis block).
var regTestGenesisHash = wire.ShaHash([wire.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,
})
// regTestGenesisMerkleRoot is the hash of the first transaction in the genesis
// block for the regression test network. It is the same as the merkle root for
// the main network.
var regTestGenesisMerkleRoot = genesisMerkleRoot
// regTestGenesisBlock defines the genesis block of the block chain which serves
// as the public transaction ledger for the regression test network.
var regTestGenesisBlock = wire.MsgBlock{
Header: wire.BlockHeader{
Version: 1,
PrevBlock: wire.ShaHash{}, // 0000000000000000000000000000000000000000000000000000000000000000
MerkleRoot: regTestGenesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
Timestamp: time.Unix(1296688602, 0), // 2011-02-02 23:16:42 +0000 UTC
Bits: 0x207fffff, // 545259519 [7fffff0000000000000000000000000000000000000000000000000000000000]
Nonce: 2,
},
Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
}
// testNet3GenesisHash is the hash of the first block in the block chain for the
// test network (version 3).
var testNet3GenesisHash = wire.ShaHash([wire.HashSize]byte{ // Make go vet happy.
0x43, 0x49, 0x7f, 0xd7, 0xf8, 0x26, 0x95, 0x71,
0x08, 0xf4, 0xa3, 0x0f, 0xd9, 0xce, 0xc3, 0xae,
0xba, 0x79, 0x97, 0x20, 0x84, 0xe9, 0x0e, 0xad,
0x01, 0xea, 0x33, 0x09, 0x00, 0x00, 0x00, 0x00,
})
// testNet3GenesisMerkleRoot is the hash of the first transaction in the genesis
// block for the test network (version 3). It is the same as the merkle root
// for the main network.
var testNet3GenesisMerkleRoot = genesisMerkleRoot
// testNet3GenesisBlock defines the genesis block of the block chain which
// serves as the public transaction ledger for the test network (version 3).
var testNet3GenesisBlock = wire.MsgBlock{
Header: wire.BlockHeader{
Version: 1,
PrevBlock: wire.ShaHash{}, // 0000000000000000000000000000000000000000000000000000000000000000
MerkleRoot: testNet3GenesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
Timestamp: time.Unix(1296688602, 0), // 2011-02-02 23:16:42 +0000 UTC
Bits: 0x1d00ffff, // 486604799 [00000000ffff0000000000000000000000000000000000000000000000000000]
Nonce: 0x18aea41a, // 414098458
},
Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
}
// simNetGenesisHash is the hash of the first block in the block chain for the
// simulation test network.
var simNetGenesisHash = wire.ShaHash([wire.HashSize]byte{ // Make go vet happy.
0xf6, 0x7a, 0xd7, 0x69, 0x5d, 0x9b, 0x66, 0x2a,
0x72, 0xff, 0x3d, 0x8e, 0xdb, 0xbb, 0x2d, 0xe0,
0xbf, 0xa6, 0x7b, 0x13, 0x97, 0x4b, 0xb9, 0x91,
0x0d, 0x11, 0x6d, 0x5c, 0xbd, 0x86, 0x3e, 0x68,
})
// simNetGenesisMerkleRoot is the hash of the first transaction in the genesis
// block for the simulation test network. It is the same as the merkle root for
// the main network.
var simNetGenesisMerkleRoot = genesisMerkleRoot
// simNetGenesisBlock defines the genesis block of the block chain which serves
// as the public transaction ledger for the simulation test network.
var simNetGenesisBlock = wire.MsgBlock{
Header: wire.BlockHeader{
Version: 1,
PrevBlock: wire.ShaHash{}, // 0000000000000000000000000000000000000000000000000000000000000000
MerkleRoot: simNetGenesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
Timestamp: time.Unix(1401292357, 0), // 2014-05-28 15:52:37 +0000 UTC
Bits: 0x207fffff, // 545259519 [7fffff0000000000000000000000000000000000000000000000000000000000]
Nonce: 2,
},
Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
}

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// Copyright (c) 2014 Conformal Systems LLC.
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package chaincfg_test
import (
"bytes"
"testing"
"github.com/btcsuite/btcd/chaincfg"
"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 := chaincfg.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, err := chaincfg.MainNetParams.GenesisBlock.BlockSha()
if err != nil {
t.Fatalf("BlockSha: %v", err)
}
if !chaincfg.MainNetParams.GenesisHash.IsEqual(&hash) {
t.Fatalf("TestGenesisBlock: Genesis block hash does not "+
"appear valid - got %v, want %v", spew.Sdump(hash),
spew.Sdump(chaincfg.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 := chaincfg.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, err := chaincfg.RegressionNetParams.GenesisBlock.BlockSha()
if err != nil {
t.Errorf("BlockSha: %v", err)
}
if !chaincfg.RegressionNetParams.GenesisHash.IsEqual(&hash) {
t.Fatalf("TestRegTestGenesisBlock: Genesis block hash does "+
"not appear valid - got %v, want %v", spew.Sdump(hash),
spew.Sdump(chaincfg.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 := chaincfg.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, err := chaincfg.TestNet3Params.GenesisBlock.BlockSha()
if err != nil {
t.Fatalf("BlockSha: %v", err)
}
if !chaincfg.TestNet3Params.GenesisHash.IsEqual(&hash) {
t.Fatalf("TestTestNet3GenesisBlock: Genesis block hash does "+
"not appear valid - got %v, want %v", spew.Sdump(hash),
spew.Sdump(chaincfg.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 := chaincfg.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, err := chaincfg.SimNetParams.GenesisBlock.BlockSha()
if err != nil {
t.Fatalf("BlockSha: %v", err)
}
if !chaincfg.SimNetParams.GenesisHash.IsEqual(&hash) {
t.Fatalf("TestSimNetGenesisBlock: Genesis block hash does "+
"not appear valid - got %v, want %v", spew.Sdump(hash),
spew.Sdump(chaincfg.SimNetParams.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, /* |.....| */
}

14
chaincfg/internal_test.go Normal file
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@ -0,0 +1,14 @@
package chaincfg
import (
"testing"
)
func TestInvalidShaStr(t *testing.T) {
defer func() {
if r := recover(); r == nil {
t.Errorf("Expected panic for invalid sha string, got nil")
}
}()
newShaHashFromStr("banana")
}

428
chaincfg/params.go Normal file
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@ -0,0 +1,428 @@
// Copyright (c) 2014 Conformal Systems LLC.
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package chaincfg
import (
"errors"
"math/big"
"github.com/btcsuite/btcd/wire"
)
// These variables are the chain proof-of-work limit parameters for each default
// network.
var (
// bigOne is 1 represented as a big.Int. It is defined here to avoid
// the overhead of creating it multiple times.
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)
// 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.
regressionPowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 255), bigOne)
// 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)
// 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.
simNetPowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 255), bigOne)
)
// Checkpoint identifies a known good point in the block chain. Using
// checkpoints allows a few optimizations for old blocks during initial download
// and also prevents forks from old blocks.
//
// Each checkpoint is selected based upon several factors. See the
// documentation for blockchain.IsCheckpointCandidate for details on the
// selection criteria.
type Checkpoint struct {
Height int64
Hash *wire.ShaHash
}
// Params defines a Bitcoin network by its parameters. These parameters may be
// used by Bitcoin applications to differentiate networks as well as addresses
// and keys for one network from those intended for use on another network.
type Params struct {
Name string
Net wire.BitcoinNet
DefaultPort string
// Chain parameters
GenesisBlock *wire.MsgBlock
GenesisHash *wire.ShaHash
PowLimit *big.Int
PowLimitBits uint32
SubsidyHalvingInterval int32
ResetMinDifficulty bool
// Checkpoints ordered from oldest to newest.
Checkpoints []Checkpoint
// Reject version 1 blocks once a majority of the network has upgraded.
// This is part of BIP0034.
BlockV1RejectNumRequired uint64
BlockV1RejectNumToCheck uint64
// Ensure coinbase starts with serialized block heights for version 2
// blocks or newer once a majority of the network has upgraded.
CoinbaseBlockHeightNumRequired uint64
CoinbaseBlockHeightNumToCheck uint64
// Mempool parameters
RelayNonStdTxs bool
// 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
// BIP32 hierarchical deterministic extended key magics
HDPrivateKeyID [4]byte
HDPublicKeyID [4]byte
// BIP44 coin type used in the hierarchical deterministic path for
// address generation.
HDCoinType uint32
}
// MainNetParams defines the network parameters for the main Bitcoin network.
var MainNetParams = Params{
Name: "mainnet",
Net: wire.MainNet,
DefaultPort: "8333",
// Chain parameters
GenesisBlock: &genesisBlock,
GenesisHash: &genesisHash,
PowLimit: mainPowLimit,
PowLimitBits: 0x1d00ffff,
SubsidyHalvingInterval: 210000,
ResetMinDifficulty: false,
// Checkpoints ordered from oldest to newest.
Checkpoints: []Checkpoint{
{11111, newShaHashFromStr("0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")},
{33333, newShaHashFromStr("000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")},
{74000, newShaHashFromStr("0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")},
{105000, newShaHashFromStr("00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")},
{134444, newShaHashFromStr("00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")},
{168000, newShaHashFromStr("000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763")},
{193000, newShaHashFromStr("000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317")},
{210000, newShaHashFromStr("000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e")},
{216116, newShaHashFromStr("00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e")},
{225430, newShaHashFromStr("00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932")},
{250000, newShaHashFromStr("000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214")},
{267300, newShaHashFromStr("000000000000000a83fbd660e918f218bf37edd92b748ad940483c7c116179ac")},
{279000, newShaHashFromStr("0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40")},
{300255, newShaHashFromStr("0000000000000000162804527c6e9b9f0563a280525f9d08c12041def0a0f3b2")},
{319400, newShaHashFromStr("000000000000000021c6052e9becade189495d1c539aa37c58917305fd15f13b")},
},
// Reject version 1 blocks once a majority of the network has upgraded.
// 95% (950 / 1000)
// This is part of BIP0034.
BlockV1RejectNumRequired: 950,
BlockV1RejectNumToCheck: 1000,
// Ensure coinbase starts with serialized block heights for version 2
// blocks or newer once a majority of the network has upgraded.
// 75% (750 / 1000)
// This is part of BIP0034.
CoinbaseBlockHeightNumRequired: 750,
CoinbaseBlockHeightNumToCheck: 1000,
// Mempool parameters
RelayNonStdTxs: false,
// Address encoding magics
PubKeyHashAddrID: 0x00, // starts with 1
ScriptHashAddrID: 0x05, // starts with 3
PrivateKeyID: 0x80, // starts with 5 (uncompressed) or K (compressed)
// 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
// BIP44 coin type used in the hierarchical deterministic path for
// address generation.
HDCoinType: 0,
}
// RegressionNetParams defines the network parameters for the regression test
// Bitcoin network. Not to be confused with the test Bitcoin network (version
// 3), this network is sometimes simply called "testnet".
var RegressionNetParams = Params{
Name: "regtest",
Net: wire.TestNet,
DefaultPort: "18444",
// Chain parameters
GenesisBlock: &regTestGenesisBlock,
GenesisHash: &regTestGenesisHash,
PowLimit: regressionPowLimit,
PowLimitBits: 0x207fffff,
SubsidyHalvingInterval: 150,
ResetMinDifficulty: true,
// Checkpoints ordered from oldest to newest.
Checkpoints: nil,
// Reject version 1 blocks once a majority of the network has upgraded.
// 75% (75 / 100)
// This is part of BIP0034.
BlockV1RejectNumRequired: 75,
BlockV1RejectNumToCheck: 100,
// Ensure coinbase starts with serialized block heights for version 2
// blocks or newer once a majority of the network has upgraded.
// 51% (51 / 100)
// This is part of BIP0034.
CoinbaseBlockHeightNumRequired: 51,
CoinbaseBlockHeightNumToCheck: 100,
// Mempool parameters
RelayNonStdTxs: true,
// Address encoding magics
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
HDPublicKeyID: [4]byte{0x04, 0x35, 0x87, 0xcf}, // starts with tpub
// BIP44 coin type used in the hierarchical deterministic path for
// address generation.
HDCoinType: 1,
}
// TestNet3Params defines the network parameters for the test Bitcoin network
// (version 3). Not to be confused with the regression test network, this
// network is sometimes simply called "testnet".
var TestNet3Params = Params{
Name: "testnet3",
Net: wire.TestNet3,
DefaultPort: "18333",
// Chain parameters
GenesisBlock: &testNet3GenesisBlock,
GenesisHash: &testNet3GenesisHash,
PowLimit: testNet3PowLimit,
PowLimitBits: 0x1d00ffff,
SubsidyHalvingInterval: 210000,
ResetMinDifficulty: true,
// Checkpoints ordered from oldest to newest.
Checkpoints: []Checkpoint{
{546, newShaHashFromStr("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
},
// Reject version 1 blocks once a majority of the network has upgraded.
// 75% (75 / 100)
// This is part of BIP0034.
BlockV1RejectNumRequired: 75,
BlockV1RejectNumToCheck: 100,
// Ensure coinbase starts with serialized block heights for version 2
// blocks or newer once a majority of the network has upgraded.
// 51% (51 / 100)
// This is part of BIP0034.
CoinbaseBlockHeightNumRequired: 51,
CoinbaseBlockHeightNumToCheck: 100,
// Mempool parameters
RelayNonStdTxs: true,
// Address encoding magics
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
HDPublicKeyID: [4]byte{0x04, 0x35, 0x87, 0xcf}, // starts with tpub
// BIP44 coin type used in the hierarchical deterministic path for
// address generation.
HDCoinType: 1,
}
// SimNetParams defines the network parameters for the simulation test Bitcoin
// network. This network is similar to the normal test network except it is
// intended for private use within a group of individuals doing simulation
// testing. The functionality is intended to differ in that the only nodes
// which are specifically specified are used to create the network rather than
// following normal discovery rules. This is important as otherwise it would
// just turn into another public testnet.
var SimNetParams = Params{
Name: "simnet",
Net: wire.SimNet,
DefaultPort: "18555",
// Chain parameters
GenesisBlock: &simNetGenesisBlock,
GenesisHash: &simNetGenesisHash,
PowLimit: simNetPowLimit,
PowLimitBits: 0x207fffff,
SubsidyHalvingInterval: 210000,
ResetMinDifficulty: true,
// Checkpoints ordered from oldest to newest.
Checkpoints: nil,
// Reject version 1 blocks once a majority of the network has upgraded.
// 75% (75 / 100)
BlockV1RejectNumRequired: 75,
BlockV1RejectNumToCheck: 100,
// Ensure coinbase starts with serialized block heights for version 2
// blocks or newer once a majority of the network has upgraded.
// 51% (51 / 100)
CoinbaseBlockHeightNumRequired: 51,
CoinbaseBlockHeightNumToCheck: 100,
// Mempool parameters
RelayNonStdTxs: true,
// Address encoding magics
PubKeyHashAddrID: 0x3f, // starts with S
ScriptHashAddrID: 0x7b, // starts with s
PrivateKeyID: 0x64, // starts with 4 (uncompressed) or F (compressed)
// BIP32 hierarchical deterministic extended key magics
HDPrivateKeyID: [4]byte{0x04, 0x20, 0xb9, 0x00}, // starts with sprv
HDPublicKeyID: [4]byte{0x04, 0x20, 0xbd, 0x3a}, // starts with spub
// BIP44 coin type used in the hierarchical deterministic path for
// address generation.
HDCoinType: 115, // ASCII for s
}
var (
// ErrDuplicateNet describes an error where the parameters for a Bitcoin
// network could not be set due to the network already being a standard
// network or previously-registered into this package.
ErrDuplicateNet = errors.New("duplicate Bitcoin network")
// ErrUnknownHDKeyID describes an error where the provided id which
// is intended to identify the network for a hierarchical deterministic
// private extended key is not registered.
ErrUnknownHDKeyID = errors.New("unknown hd private extended key bytes")
)
var (
registeredNets = map[wire.BitcoinNet]struct{}{
MainNetParams.Net: struct{}{},
TestNet3Params.Net: struct{}{},
RegressionNetParams.Net: struct{}{},
SimNetParams.Net: struct{}{},
}
pubKeyHashAddrIDs = map[byte]struct{}{
MainNetParams.PubKeyHashAddrID: struct{}{},
TestNet3Params.PubKeyHashAddrID: struct{}{}, // shared with regtest
SimNetParams.PubKeyHashAddrID: struct{}{},
}
scriptHashAddrIDs = map[byte]struct{}{
MainNetParams.ScriptHashAddrID: struct{}{},
TestNet3Params.ScriptHashAddrID: struct{}{}, // shared with regtest
SimNetParams.ScriptHashAddrID: struct{}{},
}
// Testnet is shared with regtest.
hdPrivToPubKeyIDs = map[[4]byte][]byte{
MainNetParams.HDPrivateKeyID: MainNetParams.HDPublicKeyID[:],
TestNet3Params.HDPrivateKeyID: TestNet3Params.HDPublicKeyID[:],
SimNetParams.HDPrivateKeyID: SimNetParams.HDPublicKeyID[:],
}
)
// Register registers the network parameters for a Bitcoin network. This may
// error with ErrDuplicateNet if the network is already registered (either
// due to a previous Register call, or the network being one of the default
// networks).
//
// Network parameters should be registered into this package by a main package
// as early as possible. Then, library packages may lookup networks or network
// parameters based on inputs and work regardless of the network being standard
// or not.
func Register(params *Params) error {
if _, ok := registeredNets[params.Net]; ok {
return ErrDuplicateNet
}
registeredNets[params.Net] = struct{}{}
pubKeyHashAddrIDs[params.PubKeyHashAddrID] = struct{}{}
scriptHashAddrIDs[params.ScriptHashAddrID] = struct{}{}
hdPrivToPubKeyIDs[params.HDPrivateKeyID] = params.HDPublicKeyID[:]
return nil
}
// IsPubKeyHashAddrID returns whether the id is an identifier known to prefix a
// pay-to-pubkey-hash address on any default or registered network. This is
// used when decoding an address string into a specific address type. It is up
// to the caller to check both this and IsScriptHashAddrID and decide whether an
// address is a pubkey hash address, script hash address, neither, or
// undeterminable (if both return true).
func IsPubKeyHashAddrID(id byte) bool {
_, ok := pubKeyHashAddrIDs[id]
return ok
}
// IsScriptHashAddrID returns whether the id is an identifier known to prefix a
// pay-to-script-hash address on any default or registered network. This is
// used when decoding an address string into a specific address type. It is up
// to the caller to check both this and IsPubKeyHashAddrID and decide whether an
// address is a pubkey hash address, script hash address, neither, or
// undeterminable (if both return true).
func IsScriptHashAddrID(id byte) bool {
_, ok := scriptHashAddrIDs[id]
return ok
}
// HDPrivateKeyToPublicKeyID accepts a private hierarchical deterministic
// extended key id and returns the associated public key id. When the provided
// id is not registered, the ErrUnknownHDKeyID error will be returned.
func HDPrivateKeyToPublicKeyID(id []byte) ([]byte, error) {
if len(id) != 4 {
return nil, ErrUnknownHDKeyID
}
var key [4]byte
copy(key[:], id)
pubBytes, ok := hdPrivToPubKeyIDs[key]
if !ok {
return nil, ErrUnknownHDKeyID
}
return pubBytes, nil
}
// newShaHashFromStr converts the passed big-endian hex string into a
// wire.ShaHash. It only differs from the one available in wire in that
// it panics on an error since it will only (and must only) be called with
// hard-coded, and therefore known good, hashes.
func newShaHashFromStr(hexStr string) *wire.ShaHash {
sha, err := wire.NewShaHashFromStr(hexStr)
if err != nil {
// Ordinarily I don't like panics in library code since it
// can take applications down without them having a chance to
// recover which is extremely annoying, however an exception is
// being made in this case because the only way this can panic
// is if there is an error in the hard-coded hashes. Thus it
// will only ever potentially panic on init and therefore is
// 100% predictable.
panic(err)
}
return sha
}

380
chaincfg/register_test.go Normal file
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@ -0,0 +1,380 @@
package chaincfg_test
import (
"bytes"
"reflect"
"testing"
. "github.com/btcsuite/btcd/chaincfg"
)
// Define some of the required parameters for a user-registered
// network. This is necessary to test the registration of and
// lookup of encoding magics from the network.
var mockNetParams = Params{
Name: "mocknet",
Net: 1<<32 - 1,
PubKeyHashAddrID: 0x9f,
ScriptHashAddrID: 0xf9,
HDPrivateKeyID: [4]byte{0x01, 0x02, 0x03, 0x04},
HDPublicKeyID: [4]byte{0x05, 0x06, 0x07, 0x08},
}
func TestRegister(t *testing.T) {
type registerTest struct {
name string
params *Params
err error
}
type magicTest struct {
magic byte
valid bool
}
type hdTest struct {
priv []byte
want []byte
err error
}
tests := []struct {
name string
register []registerTest
p2pkhMagics []magicTest
p2shMagics []magicTest
hdMagics []hdTest
}{
{
name: "default networks",
register: []registerTest{
{
name: "duplicate mainnet",
params: &MainNetParams,
err: ErrDuplicateNet,
},
{
name: "duplicate regtest",
params: &RegressionNetParams,
err: ErrDuplicateNet,
},
{
name: "duplicate testnet3",
params: &TestNet3Params,
err: ErrDuplicateNet,
},
{
name: "duplicate simnet",
params: &SimNetParams,
err: ErrDuplicateNet,
},
},
p2pkhMagics: []magicTest{
{
magic: MainNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: TestNet3Params.PubKeyHashAddrID,
valid: true,
},
{
magic: RegressionNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: SimNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: mockNetParams.PubKeyHashAddrID,
valid: false,
},
{
magic: 0xFF,
valid: false,
},
},
p2shMagics: []magicTest{
{
magic: MainNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: TestNet3Params.ScriptHashAddrID,
valid: true,
},
{
magic: RegressionNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: SimNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: mockNetParams.ScriptHashAddrID,
valid: false,
},
{
magic: 0xFF,
valid: false,
},
},
hdMagics: []hdTest{
{
priv: MainNetParams.HDPrivateKeyID[:],
want: MainNetParams.HDPublicKeyID[:],
err: nil,
},
{
priv: TestNet3Params.HDPrivateKeyID[:],
want: TestNet3Params.HDPublicKeyID[:],
err: nil,
},
{
priv: RegressionNetParams.HDPrivateKeyID[:],
want: RegressionNetParams.HDPublicKeyID[:],
err: nil,
},
{
priv: SimNetParams.HDPrivateKeyID[:],
want: SimNetParams.HDPublicKeyID[:],
err: nil,
},
{
priv: mockNetParams.HDPrivateKeyID[:],
err: ErrUnknownHDKeyID,
},
{
priv: []byte{0xff, 0xff, 0xff, 0xff},
err: ErrUnknownHDKeyID,
},
{
priv: []byte{0xff},
err: ErrUnknownHDKeyID,
},
},
},
{
name: "register mocknet",
register: []registerTest{
{
name: "mocknet",
params: &mockNetParams,
err: nil,
},
},
p2pkhMagics: []magicTest{
{
magic: MainNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: TestNet3Params.PubKeyHashAddrID,
valid: true,
},
{
magic: RegressionNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: SimNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: mockNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: 0xFF,
valid: false,
},
},
p2shMagics: []magicTest{
{
magic: MainNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: TestNet3Params.ScriptHashAddrID,
valid: true,
},
{
magic: RegressionNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: SimNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: mockNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: 0xFF,
valid: false,
},
},
hdMagics: []hdTest{
{
priv: mockNetParams.HDPrivateKeyID[:],
want: mockNetParams.HDPublicKeyID[:],
err: nil,
},
},
},
{
name: "more duplicates",
register: []registerTest{
{
name: "duplicate mainnet",
params: &MainNetParams,
err: ErrDuplicateNet,
},
{
name: "duplicate regtest",
params: &RegressionNetParams,
err: ErrDuplicateNet,
},
{
name: "duplicate testnet3",
params: &TestNet3Params,
err: ErrDuplicateNet,
},
{
name: "duplicate simnet",
params: &SimNetParams,
err: ErrDuplicateNet,
},
{
name: "duplicate mocknet",
params: &mockNetParams,
err: ErrDuplicateNet,
},
},
p2pkhMagics: []magicTest{
{
magic: MainNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: TestNet3Params.PubKeyHashAddrID,
valid: true,
},
{
magic: RegressionNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: SimNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: mockNetParams.PubKeyHashAddrID,
valid: true,
},
{
magic: 0xFF,
valid: false,
},
},
p2shMagics: []magicTest{
{
magic: MainNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: TestNet3Params.ScriptHashAddrID,
valid: true,
},
{
magic: RegressionNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: SimNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: mockNetParams.ScriptHashAddrID,
valid: true,
},
{
magic: 0xFF,
valid: false,
},
},
hdMagics: []hdTest{
{
priv: MainNetParams.HDPrivateKeyID[:],
want: MainNetParams.HDPublicKeyID[:],
err: nil,
},
{
priv: TestNet3Params.HDPrivateKeyID[:],
want: TestNet3Params.HDPublicKeyID[:],
err: nil,
},
{
priv: RegressionNetParams.HDPrivateKeyID[:],
want: RegressionNetParams.HDPublicKeyID[:],
err: nil,
},
{
priv: SimNetParams.HDPrivateKeyID[:],
want: SimNetParams.HDPublicKeyID[:],
err: nil,
},
{
priv: mockNetParams.HDPrivateKeyID[:],
want: mockNetParams.HDPublicKeyID[:],
err: nil,
},
{
priv: []byte{0xff, 0xff, 0xff, 0xff},
err: ErrUnknownHDKeyID,
},
{
priv: []byte{0xff},
err: ErrUnknownHDKeyID,
},
},
},
}
for _, test := range tests {
for _, regTest := range test.register {
err := Register(regTest.params)
if err != regTest.err {
t.Errorf("%s:%s: Registered network with unexpected error: got %v expected %v",
test.name, regTest.name, err, regTest.err)
}
}
for i, magTest := range test.p2pkhMagics {
valid := IsPubKeyHashAddrID(magTest.magic)
if valid != magTest.valid {
t.Errorf("%s: P2PKH magic %d valid mismatch: got %v expected %v",
test.name, i, valid, magTest.valid)
}
}
for i, magTest := range test.p2shMagics {
valid := IsScriptHashAddrID(magTest.magic)
if valid != magTest.valid {
t.Errorf("%s: P2SH magic %d valid mismatch: got %v expected %v",
test.name, i, valid, magTest.valid)
}
}
for i, magTest := range test.hdMagics {
pubKey, err := HDPrivateKeyToPublicKeyID(magTest.priv[:])
if !reflect.DeepEqual(err, magTest.err) {
t.Errorf("%s: HD magic %d mismatched error: got %v expected %v ",
test.name, i, err, magTest.err)
continue
}
if magTest.err == nil && !bytes.Equal(pubKey, magTest.want[:]) {
t.Errorf("%s: HD magic %d private and public mismatch: got %v expected %v ",
test.name, i, pubKey, magTest.want[:])
}
}
}
}