wire+chaincfg: add signet params
This commit adds all necessary chain parameters for connecting to the public signet network. Reference: https://github.com/bitcoin/bitcoin/pull/18267
This commit is contained in:
Oliver Gugger
Roy Lee
parent
e04fea4c23
commit
d17e62ae3e
4 changed files with 277 additions and 0 deletions
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@ -170,3 +170,31 @@ var simNetGenesisBlock = wire.MsgBlock{
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},
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Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
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}
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// sigNetGenesisHash is the hash of the first block in the block chain for the
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// signet test network.
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var sigNetGenesisHash = chainhash.Hash{
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0xf6, 0x1e, 0xee, 0x3b, 0x63, 0xa3, 0x80, 0xa4,
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0x77, 0xa0, 0x63, 0xaf, 0x32, 0xb2, 0xbb, 0xc9,
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0x7c, 0x9f, 0xf9, 0xf0, 0x1f, 0x2c, 0x42, 0x25,
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0xe9, 0x73, 0x98, 0x81, 0x08, 0x00, 0x00, 0x00,
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}
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// sigNetGenesisMerkleRoot is the hash of the first transaction in the genesis
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// block for the signet test network. It is the same as the merkle root for
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// the main network.
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var sigNetGenesisMerkleRoot = genesisMerkleRoot
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// sigNetGenesisBlock defines the genesis block of the block chain which serves
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// as the public transaction ledger for the signet test network.
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var sigNetGenesisBlock = wire.MsgBlock{
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Header: wire.BlockHeader{
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Version: 1,
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PrevBlock: chainhash.Hash{}, // 0000000000000000000000000000000000000000000000000000000000000000
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MerkleRoot: sigNetGenesisMerkleRoot, // 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b
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Timestamp: time.Unix(1598918400, 0), // 2020-09-01 00:00:00 +0000 UTC
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Bits: 0x1e0377ae, // 503543726 [00000377ae000000000000000000000000000000000000000000000000000000]
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Nonce: 52613770,
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},
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Transactions: []*wire.MsgTx{&genesisCoinbaseTx},
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}
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@ -118,6 +118,33 @@ func TestSimNetGenesisBlock(t *testing.T) {
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}
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}
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// TestSigNetGenesisBlock tests the genesis block of the signet test network for
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// validity by checking the encoded bytes and hashes.
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func TestSigNetGenesisBlock(t *testing.T) {
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// Encode the genesis block to raw bytes.
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var buf bytes.Buffer
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err := SigNetParams.GenesisBlock.Serialize(&buf)
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if err != nil {
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t.Fatalf("TestSigNetGenesisBlock: %v", err)
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}
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// Ensure the encoded block matches the expected bytes.
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if !bytes.Equal(buf.Bytes(), sigNetGenesisBlockBytes) {
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t.Fatalf("TestSigNetGenesisBlock: Genesis block does not "+
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"appear valid - got %v, want %v",
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spew.Sdump(buf.Bytes()),
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spew.Sdump(sigNetGenesisBlockBytes))
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}
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// Check hash of the block against expected hash.
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hash := SigNetParams.GenesisBlock.BlockHash()
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if !SigNetParams.GenesisHash.IsEqual(&hash) {
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t.Fatalf("TestSigNetGenesisBlock: Genesis block hash does "+
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"not appear valid - got %v, want %v", spew.Sdump(hash),
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spew.Sdump(SigNetParams.GenesisHash))
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}
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}
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// genesisBlockBytes are the wire encoded bytes for the genesis block of the
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// main network as of protocol version 60002.
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var genesisBlockBytes = []byte{
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@ -281,3 +308,44 @@ var simNetGenesisBlockBytes = []byte{
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0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |.Lp+k.._|*/
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0xac, 0x00, 0x00, 0x00, 0x00, /* |.....| */
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}
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// sigNetGenesisBlockBytes are the wire encoded bytes for the genesis block of
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// the signet test network as of protocol version 70002.
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var sigNetGenesisBlockBytes = []byte{
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |...@....| */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
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0x00, 0x00, 0x00, 0x00, 0x3b, 0xa3, 0xed, 0xfd, /* |........| */
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0x7a, 0x7b, 0x12, 0xb2, 0x7a, 0xc7, 0x2c, 0x3e, /* |....;...| */
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0x67, 0x76, 0x8f, 0x61, 0x7f, 0xc8, 0x1b, 0xc3, /* |z{..z.,>| */
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0x88, 0x8a, 0x51, 0x32, 0x3a, 0x9f, 0xb8, 0xaa, /* |gv.a....| */
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0x4b, 0x1e, 0x5e, 0x4a, 0x00, 0x8f, 0x4d, 0x5f, /* |..Q2:...| */
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0xae, 0x77, 0x03, 0x1e, 0x8a, 0xd2, 0x22, 0x03, /* |K.^J..M_| */
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0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, /* |.w....".| */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* |........| */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, /* |........| */
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0xff, 0xff, 0x4d, 0x04, 0xff, 0xff, 0x00, 0x1d, /* |........| */
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0x01, 0x04, 0x45, 0x54, 0x68, 0x65, 0x20, 0x54, /* |..M.....| */
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0x69, 0x6d, 0x65, 0x73, 0x20, 0x30, 0x33, 0x2f, /* |..EThe T| */
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0x4a, 0x61, 0x6e, 0x2f, 0x32, 0x30, 0x30, 0x39, /* |imes 03/| */
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0x20, 0x43, 0x68, 0x61, 0x6e, 0x63, 0x65, 0x6c, /* |Jan/2009| */
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0x6c, 0x6f, 0x72, 0x20, 0x6f, 0x6e, 0x20, 0x62, /* | Chancel| */
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0x72, 0x69, 0x6e, 0x6b, 0x20, 0x6f, 0x66, 0x20, /* |lor on b| */
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0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x62, /* |rink of| */
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0x61, 0x69, 0x6c, 0x6f, 0x75, 0x74, 0x20, 0x66, /* |second b| */
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0x6f, 0x72, 0x20, 0x62, 0x61, 0x6e, 0x6b, 0x73, /* |ailout f| */
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0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0xf2, 0x05, /* |or banks| */
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0x2a, 0x01, 0x00, 0x00, 0x00, 0x43, 0x41, 0x04, /* |........| */
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0x67, 0x8a, 0xfd, 0xb0, 0xfe, 0x55, 0x48, 0x27, /* |*....CA.| */
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0x19, 0x67, 0xf1, 0xa6, 0x71, 0x30, 0xb7, 0x10, /* |g....UH'| */
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0x5c, 0xd6, 0xa8, 0x28, 0xe0, 0x39, 0x09, 0xa6, /* |.g..q0..| */
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0x79, 0x62, 0xe0, 0xea, 0x1f, 0x61, 0xde, 0xb6, /* |\..(.9..| */
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0x49, 0xf6, 0xbc, 0x3f, 0x4c, 0xef, 0x38, 0xc4, /* |yb...a..| */
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0xf3, 0x55, 0x04, 0xe5, 0x1e, 0xc1, 0x12, 0xde, /* |I..?L.8.| */
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0x5c, 0x38, 0x4d, 0xf7, 0xba, 0x0b, 0x8d, 0x57, /* |.U......| */
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0x8a, 0x4c, 0x70, 0x2b, 0x6b, 0xf1, 0x1d, 0x5f, /* |\8M....W| */
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0xac, 0x00, 0x00, 0x00, 0x00, /* |.....| */
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}
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@ -5,6 +5,8 @@
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package chaincfg
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import (
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"encoding/binary"
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"encoding/hex"
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"errors"
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"math"
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"math/big"
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@ -38,6 +40,30 @@ var (
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// simNetPowLimit is the highest proof of work value a Bitcoin block
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// can have for the simulation test network. It is the value 2^255 - 1.
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simNetPowLimit = new(big.Int).Sub(new(big.Int).Lsh(bigOne, 255), bigOne)
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// sigNetPowLimit is the highest proof of work value a bitcoin block can
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// have for the signet test network. It is the value 0x0377ae << 216.
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sigNetPowLimit = new(big.Int).Lsh(new(big.Int).SetInt64(0x0377ae), 216)
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// DefaultSignetChallenge is the byte representation of the signet
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// challenge for the default (public, Taproot enabled) signet network.
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// This is the binary equivalent of the bitcoin script
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// 1 03ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430
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// 0359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c4 2
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// OP_CHECKMULTISIG
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DefaultSignetChallenge, _ = hex.DecodeString(
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"512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d" +
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"1e086be430210359ef5021964fe22d6f8e05b2463c9540ce9688" +
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"3fe3b278760f048f5189f2e6c452ae",
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)
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// DefaultSignetDNSSeeds is the list of seed nodes for the default
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// (public, Taproot enabled) signet network.
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DefaultSignetDNSSeeds = []DNSSeed{
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{"178.128.221.177", false},
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{"2a01:7c8:d005:390::5", false},
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{"v7ajjeirttkbnt32wpy3c6w3emwnfr3fkla7hpxcfokr3ysd3kqtzmqd.onion:38333", false},
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}
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)
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// Checkpoint identifies a known good point in the block chain. Using
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@ -96,6 +122,11 @@ const (
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// includes the deployment of BIPS 141, 142, 144, 145, 147 and 173.
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DeploymentSegwit
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// DeploymentTaproot defines the rule change deployment ID for the
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// Taproot (+Schnorr) soft-fork package. The taproot package includes
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// the deployment of BIPS 340, 341 and 342.
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DeploymentTaproot
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// NOTE: DefinedDeployments must always come last since it is used to
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// determine how many defined deployments there currently are.
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@ -578,6 +609,107 @@ var SimNetParams = Params{
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HDCoinType: 115, // ASCII for s
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}
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// SigNetParams defines the network parameters for the default public signet
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// Bitcoin network. Not to be confused with the regression test network, this
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// network is sometimes simply called "signet" or "taproot signet".
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var SigNetParams = CustomSignetParams(
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DefaultSignetChallenge, DefaultSignetDNSSeeds,
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)
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// CustomSignetParams creates network parameters for a custom signet network
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// from a challenge. The challenge is the binary compiled version of the block
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// challenge script.
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func CustomSignetParams(challenge []byte, dnsSeeds []DNSSeed) Params {
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// The message start is defined as the first four bytes of the sha256d
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// of the challenge script, as a single push (i.e. prefixed with the
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// challenge script length).
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challengeLength := byte(len(challenge))
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hashDouble := chainhash.DoubleHashB(
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append([]byte{challengeLength}, challenge...),
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)
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// We use little endian encoding of the hash prefix to be in line with
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// the other wire network identities.
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net := binary.LittleEndian.Uint32(hashDouble[0:4])
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return Params{
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Name: "signet",
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Net: wire.BitcoinNet(net),
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DefaultPort: "38333",
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DNSSeeds: dnsSeeds,
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// Chain parameters
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GenesisBlock: &sigNetGenesisBlock,
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GenesisHash: &sigNetGenesisHash,
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PowLimit: sigNetPowLimit,
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PowLimitBits: 0x1e0377ae,
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BIP0034Height: 1,
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BIP0065Height: 1,
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BIP0066Height: 1,
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CoinbaseMaturity: 100,
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SubsidyReductionInterval: 210000,
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TargetTimespan: time.Hour * 24 * 14, // 14 days
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TargetTimePerBlock: time.Minute * 10, // 10 minutes
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RetargetAdjustmentFactor: 4, // 25% less, 400% more
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ReduceMinDifficulty: false,
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MinDiffReductionTime: time.Minute * 20, // TargetTimePerBlock * 2
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GenerateSupported: false,
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// Checkpoints ordered from oldest to newest.
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Checkpoints: nil,
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// Consensus rule change deployments.
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//
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// The miner confirmation window is defined as:
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// target proof of work timespan / target proof of work spacing
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RuleChangeActivationThreshold: 1916, // 95% of 2016
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MinerConfirmationWindow: 2016,
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Deployments: [DefinedDeployments]ConsensusDeployment{
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DeploymentTestDummy: {
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BitNumber: 28,
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StartTime: 1199145601, // January 1, 2008 UTC
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ExpireTime: 1230767999, // December 31, 2008 UTC
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},
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DeploymentCSV: {
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BitNumber: 0,
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StartTime: 0, // Always available for vote
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ExpireTime: math.MaxInt64, // Never expires
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},
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DeploymentSegwit: {
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BitNumber: 1,
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StartTime: 0, // Always available for vote
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ExpireTime: math.MaxInt64, // Never expires.
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},
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DeploymentTaproot: {
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BitNumber: 2,
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StartTime: 0, // Always available for vote
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ExpireTime: math.MaxInt64, // Never expires.
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},
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},
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// Mempool parameters
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RelayNonStdTxs: false,
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// Human-readable part for Bech32 encoded segwit addresses, as defined in
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// BIP 173.
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Bech32HRPSegwit: "tb", // always tb for test net
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// Address encoding magics
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PubKeyHashAddrID: 0x6f, // starts with m or n
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ScriptHashAddrID: 0xc4, // starts with 2
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WitnessPubKeyHashAddrID: 0x03, // starts with QW
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WitnessScriptHashAddrID: 0x28, // starts with T7n
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PrivateKeyID: 0xef, // starts with 9 (uncompressed) or c (compressed)
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// BIP32 hierarchical deterministic extended key magics
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HDPrivateKeyID: [4]byte{0x04, 0x35, 0x83, 0x94}, // starts with tprv
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HDPublicKeyID: [4]byte{0x04, 0x35, 0x87, 0xcf}, // starts with tpub
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// BIP44 coin type used in the hierarchical deterministic path for
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// address generation.
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HDCoinType: 1,
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}
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}
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var (
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// ErrDuplicateNet describes an error where the parameters for a Bitcoin
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// network could not be set due to the network already being a standard
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@ -6,6 +6,8 @@ package chaincfg
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import (
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"bytes"
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"encoding/hex"
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"math/big"
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"testing"
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)
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@ -84,3 +86,50 @@ func TestInvalidHDKeyID(t *testing.T) {
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t.Fatalf("HDPrivateKeyToPublicKeyID: want err ErrUnknownHDKeyID, got %v", err)
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}
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}
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func TestSigNetPowLimit(t *testing.T) {
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sigNetPowLimitHex, _ := hex.DecodeString(
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"00000377ae000000000000000000000000000000000000000000000000000000",
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)
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powLimit := new(big.Int).SetBytes(sigNetPowLimitHex)
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if sigNetPowLimit.Cmp(powLimit) != 0 {
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t.Fatalf("Signet PoW limit bits (%s) not equal to big int (%s)",
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sigNetPowLimit.Text(16), powLimit.Text(16))
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}
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if compactToBig(sigNetGenesisBlock.Header.Bits).Cmp(powLimit) != 0 {
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t.Fatalf("Signet PoW limit header bits (%d) not equal to big "+
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"int (%s)", sigNetGenesisBlock.Header.Bits,
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powLimit.Text(16))
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}
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}
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// compactToBig is a copy of the blockchain.CompactToBig function. We copy it
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// here so we don't run into a circular dependency just because of a test.
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func compactToBig(compact uint32) *big.Int {
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// Extract the mantissa, sign bit, and exponent.
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mantissa := compact & 0x007fffff
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isNegative := compact&0x00800000 != 0
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exponent := uint(compact >> 24)
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// Since the base for the exponent is 256, the exponent can be treated
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// as the number of bytes to represent the full 256-bit number. So,
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// treat the exponent as the number of bytes and shift the mantissa
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// right or left accordingly. This is equivalent to:
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// N = mantissa * 256^(exponent-3)
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var bn *big.Int
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if exponent <= 3 {
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mantissa >>= 8 * (3 - exponent)
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bn = big.NewInt(int64(mantissa))
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} else {
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bn = big.NewInt(int64(mantissa))
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bn.Lsh(bn, 8*(exponent-3))
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}
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// Make it negative if the sign bit is set.
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if isNegative {
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bn = bn.Neg(bn)
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}
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return bn
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}
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