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witness commit

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This commit is contained in:
Ben 2023-07-09 17:36:18 -04:00
parent 80e8b38d24
commit 9083501e6f
1 changed files with 4 additions and 7 deletions
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11
src/models/MiningJob.ts
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@ -53,10 +53,10 @@ export class MiningJob {
// 4-byte - Commitment header (0xaa21a9ed)
const segwitMagicBits = Buffer.from('aa21a9ed', 'hex');
// 32-byte - Commitment hash: Double-SHA256(witness root hash|witness reserved value)
const commitmentHash = this.sha256(this.sha256(Buffer.concat([this.block.witnessCommit, coinbaseTransaction.ins[0].witness[0]])));
// 39th byte onwards: Optional data with no consensus meaning
coinbaseTransaction.ins[0].script = Buffer.concat([Buffer.from([littleEndianBlockHeight.byteLength]), littleEndianBlockHeight, Buffer.from('00000000' + '00000000', 'hex')]);
coinbaseTransaction.addOutput(bitcoinjs.script.compile([bitcoinjs.opcodes.OP_RETURN, Buffer.concat([segwitMagicBits, commitmentHash])]), 0);
coinbaseTransaction.addOutput(bitcoinjs.script.compile([bitcoinjs.opcodes.OP_RETURN, Buffer.concat([segwitMagicBits, this.block.witnessCommit])]), 0);
// get the non-witness coinbase tx
//@ts-ignore
@ -103,15 +103,12 @@ export class MiningJob {
//recompute the roots
testBlock.merkleRoot = this.calculateMerkleRootHash(testBlock.transactions[0].getHash(false), this.merkle_branch);
testBlock.witnessCommit = bitcoinjs.Block.calculateMerkleRoot(testBlock.transactions, true);
const segwitMagicBits = Buffer.from('aa21a9ed', 'hex');
// 32-byte - Commitment hash: Double-SHA256(witness root hash|witness reserved value)
const commitmentHash = this.sha256(this.sha256(Buffer.concat([testBlock.witnessCommit, testBlock.transactions[0].ins[0].witness[0]])));
testBlock.transactions[0].outs[testBlock.transactions[0].outs.length - 1].script = bitcoinjs.script.compile([bitcoinjs.opcodes.OP_RETURN, Buffer.concat([segwitMagicBits, commitmentHash])])
testBlock.timestamp = timestamp;
testBlock.checkTxRoots();
return testBlock;
}