j-bitcoin
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Comprehensive JavaScript/TypeScript Bitcoin (BTC) wallet library with custodial and non-custodial support, hierarchical deterministic keys, threshold signatures, and advanced cryptographic features
531 lines (435 loc) • 60.2 kB
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<title>src/transaction/builder.js - J-Bitcoin - Bitcoin Wallet Library</title>
<meta name="description" content="JavaScript/TypeScript Bitcoin wallet library with HD wallets, threshold signatures, and BIP compliance" />
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<h2><a href="index.html">Home</a></h2><h2><a href="https://github.com/yfbsei/J-Bitcoin" target="_blank" class="menu-item home-link" id="home-link" >🏠 Home</a></h2><h2><a href="https://github.com/yfbsei/J-Bitcoin" target="_blank" class="menu-item github-link" id="github-link" >📚 GitHub</a></h2><h2><a href="https://www.npmjs.com/package/j-bitcoin" target="_blank" class="menu-item npm-link" id="npm-link" >📦 NPM</a></h2><h2><a href="https://github.com/yfbsei/J-Bitcoin/tree/main/examples" target="_blank" class="menu-item examples-link" id="examples-link" >🔧 Examples</a></h2><h2><a href="https://github.com/yfbsei/J-Bitcoin/blob/main/CHANGELOG.md" target="_blank" class="menu-item changelog-link" id="changelog-link" >📊 Changelog</a></h2><h3>Classes</h3><ul><li><a href="BIP143.html">BIP143</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP143.html#.calculate">calculate</a></li><li data-type='method' style='display: none;'><a href="BIP143.html#.forP2WPKH">forP2WPKH</a></li><li data-type='method' style='display: none;'><a href="BIP143.html#.hashOutputs">hashOutputs</a></li><li data-type='method' style='display: none;'><a href="BIP143.html#.hashPrevouts">hashPrevouts</a></li><li data-type='method' style='display: none;'><a href="BIP143.html#.hashSequence">hashSequence</a></li></ul></li><li><a href="BIP322.html">BIP322</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP322.html#.createToSign">createToSign</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.createToSpend">createToSpend</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.hashMessage">hashMessage</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.sign">sign</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.signLegacy">signLegacy</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.verify">verify</a></li><li data-type='method' style='display: none;'><a href="BIP322.html#.verifyLegacy">verifyLegacy</a></li></ul></li><li><a href="BIP322Error.html">BIP322Error</a></li><li><a href="BIP341.html">BIP341</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP341.html#.calculate">calculate</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.forScriptPath">forScriptPath</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaAmounts">shaAmounts</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaOutputs">shaOutputs</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaPrevouts">shaPrevouts</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaScriptPubkeys">shaScriptPubkeys</a></li><li data-type='method' style='display: none;'><a href="BIP341.html#.shaSequences">shaSequences</a></li></ul></li><li><a href="BIP49.html">BIP49</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP49.html#.createRedeemScript">createRedeemScript</a></li><li data-type='method' style='display: none;'><a href="BIP49.html#.createScriptPubKey">createScriptPubKey</a></li><li data-type='method' style='display: none;'><a href="BIP49.html#.getAccountPath">getAccountPath</a></li><li data-type='method' style='display: none;'><a href="BIP49.html#.getDerivationPath">getDerivationPath</a></li><li data-type='method' style='display: none;'><a href="BIP49.html#.toAddress">toAddress</a></li></ul></li><li><a href="CustodialWallet.html">CustodialWallet</a><ul class='methods'><li data-type='method' style='display: none;'><a href="CustodialWallet.html#canSign">canSign</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#clearCache">clearCache</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#createTransaction">createTransaction</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#deriveAddress">deriveAddress</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#destroy">destroy</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#exportWIF">exportWIF</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getAddresses">getAddresses</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getChangeAddress">getChangeAddress</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getExtendedPrivateKey">getExtendedPrivateKey</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getExtendedPublicKey">getExtendedPublicKey</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getMnemonic">getMnemonic</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getNetwork">getNetwork</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#getReceivingAddress">getReceivingAddress</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#signMessage">signMessage</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#signMessageBIP322">signMessageBIP322</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#signTransaction">signTransaction</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#toJSON">toJSON</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#verifyMessage">verifyMessage</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.createNew">createNew</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.fromExtendedKey">fromExtendedKey</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.fromMnemonic">fromMnemonic</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.fromSeed">fromSeed</a></li><li data-type='method' style='display: none;'><a href="CustodialWallet.html#.fromWIF">fromWIF</a></li></ul></li><li></li><li><a href="CustodialWalletError.html">CustodialWalletError</a></li><li></li><li><a href="DecodingError.html">DecodingError</a></li><li><a href="ECDSAError.html">ECDSAError</a></li><li></li><li><a href="EncodingError.html">EncodingError</a></li><li><a href="JVRSS.html">JVRSS</a><ul class='methods'><li data-type='method' style='display: none;'><a href="JVRSS.html#broadcastObfuscatedCoefficients">broadcastObfuscatedCoefficients</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#calculateSharedPublicKey">calculateSharedPublicKey</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#calculateShares">calculateShares</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#distributePolynomialPoints">distributePolynomialPoints</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#generatePolynomials">generatePolynomials</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#getParticipant">getParticipant</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#getSharesForInterpolation">getSharesForInterpolation</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#reconstructSecret">reconstructSecret</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#runProtocol">runProtocol</a></li><li data-type='method' style='display: none;'><a href="JVRSS.html#verifyAllShares">verifyAllShares</a></li></ul></li><li><a href="JVRSSError.html">JVRSSError</a></li><li><a href="LegacySighash.html">LegacySighash</a><ul class='methods'><li data-type='method' style='display: none;'><a href="LegacySighash.html#.calculate">calculate</a></li></ul></li><li><a href="MPCError.html">MPCError</a></li><li><a href="NonCustodialWallet.html">NonCustodialWallet</a><ul class='methods'><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#_exportShares">_exportShares</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#_reconstructPublicKey">_reconstructPublicKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#canSign">canSign</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#canSignHD">canSignHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#clearAddressCache">clearAddressCache</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#createTransaction">createTransaction</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#deriveAddress">deriveAddress</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#destroy">destroy</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#exportShares">exportShares</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#exportWIF">exportWIF</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#generateEphemeralKeys">generateEphemeralKeys</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getAddress">getAddress</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getAddressCount">getAddressCount</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getAddresses">getAddresses</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getChangeAddress">getChangeAddress</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getExtendedPrivateKey">getExtendedPrivateKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getExtendedPublicKey">getExtendedPublicKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getMnemonic">getMnemonic</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getNetwork">getNetwork</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getPublicKey">getPublicKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getReceivingAddress">getReceivingAddress</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getShare">getShare</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getShares">getShares</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#getThresholdConfig">getThresholdConfig</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#hasHD">hasHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#initialize">initialize</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#listAddresses">listAddresses</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#sign">sign</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#signMessage">signMessage</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#signMessageBIP322">signMessageBIP322</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#signMessageHD">signMessageHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#signTransaction">signTransaction</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#toJSON">toJSON</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#verify">verify</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#verifyMessageHD">verifyMessageHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.createNew">createNew</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.createNewHD">createNewHD</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromExtendedKey">fromExtendedKey</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromMnemonic">fromMnemonic</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromSeed">fromSeed</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromShares">fromShares</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.fromWIF">fromWIF</a></li><li data-type='method' style='display: none;'><a href="NonCustodialWallet.html#.importShares">importShares</a></li></ul></li><li><a href="Participant.html">Participant</a><ul class='methods'><li data-type='method' style='display: none;'><a href="Participant.html#calculateKeyShare">calculateKeyShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="Participant.html#evaluateAt">evaluateAt</a></li><li data-type='method' style='display: none;'><a href="Participant.html#generatePolynomial">generatePolynomial</a></li><li data-type='method' style='display: none;'><a href="Participant.html#generateSignatureShare">generateSignatureShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getBlindingShare">getBlindingShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getKeyShare">getKeyShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getKeySharePublicKey">getKeySharePublicKey</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getNextEphemeralKey">getNextEphemeralKey</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getObfuscatedCoefficients">getObfuscatedCoefficients</a></li><li data-type='method' style='display: none;'><a href="Participant.html#getPolynomialPointFor">getPolynomialPointFor</a></li><li data-type='method' style='display: none;'><a href="Participant.html#receivePolynomialPoint">receivePolynomialPoint</a></li><li data-type='method' style='display: none;'><a href="Participant.html#setBlindingShare">setBlindingShare</a></li><li data-type='method' style='display: none;'><a href="Participant.html#storeEphemeralKey">storeEphemeralKey</a></li><li data-type='method' style='display: none;'><a href="Participant.html#verifyPolynomialPoint">verifyPolynomialPoint</a></li></ul></li><li><a href="ParticipantError.html">ParticipantError</a></li><li><a href="ParticipantShare.html">ParticipantShare</a></li><li><a href="Polynomial.html">Polynomial</a><ul class='methods'><li data-type='method' style='display: none;'><a href="Polynomial.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#evaluate">evaluate</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#generateShares">generateShares</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#getCoefficients">getCoefficients</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#getSecret">getSecret</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#.interpolate">interpolate</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#.lagrangeCoefficient">lagrangeCoefficient</a></li><li data-type='method' style='display: none;'><a href="Polynomial.html#.reconstructSecret">reconstructSecret</a></li></ul></li><li><a href="PolynomialError.html">PolynomialError</a></li><li><a href="Schnorr.html">Schnorr</a><ul class='methods'><li data-type='method' style='display: none;'><a href="Schnorr.html#sign">sign</a></li></ul></li><li><a href="SchnorrError.html">SchnorrError</a></li><li></li><li><a href="ScriptBuilder.html">ScriptBuilder</a><ul class='methods'><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#addOp">addOp</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#build">build</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#pushData">pushData</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#pushNumber">pushNumber</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#reset">reset</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createCLTV">createCLTV</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createCSV">createCSV</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createMultisig">createMultisig</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createOpReturn">createOpReturn</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2PKH">createP2PKH</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2PKHFromPubkey">createP2PKHFromPubkey</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2PKHScriptSig">createP2PKHScriptSig</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2SH">createP2SH</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2SHScriptSig">createP2SHScriptSig</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2TR">createP2TR</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2WPKH">createP2WPKH</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2WPKHFromPubkey">createP2WPKHFromPubkey</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.createP2WSH">createP2WSH</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.detectType">detectType</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.disassemble">disassemble</a></li><li data-type='method' style='display: none;'><a href="ScriptBuilder.html#.parse">parse</a></li></ul></li><li><a href="ScriptError.html">ScriptError</a></li><li><a href="SighashCalculator.html">SighashCalculator</a><ul class='methods'><li data-type='method' style='display: none;'><a href="SighashCalculator.html#.calculate">calculate</a></li></ul></li><li><a href="SighashError.html">SighashError</a></li><li><a href="TaggedHash.html">TaggedHash</a><ul class='methods'><li data-type='method' style='display: none;'><a href="TaggedHash.html#.create">create</a></li></ul></li><li><a href="ThresholdSignatureError.html">ThresholdSignatureError</a></li><li><a href="ThresholdSignatureScheme.html">ThresholdSignatureScheme</a><ul class='methods'><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#clear">clear</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#generateEphemeralKeys">generateEphemeralKeys</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#generateSharedPrivateKey">generateSharedPrivateKey</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#getConfig">getConfig</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#getNextEphemeralKey">getNextEphemeralKey</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#getPublicKey">getPublicKey</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#sign">sign</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#signMessage">signMessage</a></li><li data-type='method' style='display: none;'><a href="ThresholdSignatureScheme.html#verify">verify</a></li></ul></li><li><a href="TransactionBuilder.html">TransactionBuilder</a><ul class='methods'><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#addInput">addInput</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#addOpReturn">addOpReturn</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#addOutput">addOutput</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#addWitness">addWitness</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#build">build</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#calculateFee">calculateFee</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#clone">clone</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#enableRBF">enableRBF</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#getTxid">getTxid</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#getVirtualSize">getVirtualSize</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#getWeight">getWeight</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#getWtxid">getWtxid</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#isFullySigned">isFullySigned</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#reset">reset</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#serialize">serialize</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#setInputSequence">setInputSequence</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#setLocktime">setLocktime</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#setVersion">setVersion</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#signAllInputs">signAllInputs</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#signInput">signInput</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#signInputs">signInputs</a></li><li data-type='method' style='display: none;'><a href="TransactionBuilder.html#toHex">toHex</a></li></ul></li><li></li><li><a href="TransactionBuilderError.html">TransactionBuilderError</a></li><li><a href="TransactionParseError.html">TransactionParseError</a></li><li><a href="TransactionParser.html">TransactionParser</a><ul class='methods'><li data-type='method' style='display: none;'><a href="TransactionParser.html#.fromBuffer">fromBuffer</a></li><li data-type='method' style='display: none;'><a href="TransactionParser.html#.fromHex">fromHex</a></li><li data-type='method' style='display: none;'><a href="TransactionParser.html#.getTxid">getTxid</a></li><li data-type='method' style='display: none;'><a href="TransactionParser.html#.serializeWithoutWitness">serializeWithoutWitness</a></li></ul></li><li><a href="ValidationError.html">ValidationError</a></li><li><a href="WitnessBuilder.html">WitnessBuilder</a><ul class='methods'><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildControlBlock">buildControlBlock</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2TRKeyPath">buildP2TRKeyPath</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2TRScriptPath">buildP2TRScriptPath</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2WPKH">buildP2WPKH</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2WSH">buildP2WSH</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.buildP2WSHMultisig">buildP2WSHMultisig</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.calculateTapbranchHash">calculateTapbranchHash</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.calculateTapleafHash">calculateTapleafHash</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.calculateTaptweak">calculateTaptweak</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.parse">parse</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.serialize">serialize</a></li><li data-type='method' style='display: none;'><a href="WitnessBuilder.html#.validate">validate</a></li></ul></li><li><a href="WitnessError.html">WitnessError</a></li></ul><h3>Namespaces</h3><ul><li><a href="BECH32.html">BECH32</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BECH32.html#.decode">decode</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.getAddressType">getAddressType</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.getPrefix">getPrefix</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.to_P2TR">to_P2TR</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.to_P2WPKH">to_P2WPKH</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.to_P2WSH">to_P2WSH</a></li><li data-type='method' style='display: none;'><a href="BECH32.html#.validate">validate</a></li></ul></li><li><a href="BIP39.html">BIP39</a><ul class='methods'><li data-type='method' style='display: none;'><a href="BIP39.html#.deriveSeed">deriveSeed</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.generateMnemonic">generateMnemonic</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.getWordList">getWordList</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.mnemonicToEntropy">mnemonicToEntropy</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.validateChecksum">validateChecksum</a></li><li data-type='method' style='display: none;'><a href="BIP39.html#.validateMnemonic">validateMnemonic</a></li></ul></li><li><a href="ECDSA.html">ECDSA</a><ul class='methods'><li data-type='method' style='display: none;'><a href="ECDSA.html#.getPublicKey">getPublicKey</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.recoverPublicKey">recoverPublicKey</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.sign">sign</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.signMessage">signMessage</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.verify">verify</a></li><li data-type='method' style='display: none;'><a href="ECDSA.html#.verifyMessage">verifyMessage</a></li></ul></li></ul><h3>Global</h3><ul><li><a href="global.html#ADDRESS_FORMATS">ADDRESS_FORMATS</a></li><li><a href="global.html#ADDRESS_TYPE_PURPOSE">ADDRESS_TYPE_PURPOSE</a></li><li><a href="global.html#ADDSS">ADDSS</a></li><li><a href="global.html#BECH32_PREFIXES">BECH32_PREFIXES</a></li><li><a href="global.html#BIP322_CONSTANTS">BIP322_CONSTANTS</a></li><li><a href="global.html#BIP32_CONSTANTS">BIP32_CONSTANTS</a></li><li><a href="global.html#BIP340_CONSTANTS">BIP340_CONSTANTS</a></li><li><a href="global.html#BIP39_CONSTANTS">BIP39_CONSTANTS</a></li><li><a href="global.html#BIP44_CONSTANTS">BIP44_CONSTANTS</a></li><li><a href="global.html#BIP49_CONSTANTS">BIP49_CONSTANTS</a></li><li><a href="global.html#BIP_COMPLIANCE">BIP_COMPLIANCE</a></li><li><a href="global.html#BIP_PURPOSES">BIP_PURPOSES</a></li><li><a href="global.html#CRYPTO_CONSTANTS">CRYPTO_CONSTANTS</a></li><li><a href="global.html#CURVE_ORDER">CURVE_ORDER</a></li><li><a href="global.html#ENCODING_CONSTANTS">ENCODING_CONSTANTS</a></li><li><a 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<div id="main">
<h1 class="page-title">src/transaction/builder.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* @fileoverview Transaction builder with signing support
* @description Build and sign Bitcoin transactions (Legacy, SegWit, Taproot)
* @version 1.0.0
* @author yfbsei
* @license ISC
*/
import { createHash } from 'node:crypto';
import { getScriptPubKey, decodeAddress, hash160 } from '../utils/address-helpers.js';
import { SighashCalculator, BIP143, BIP341, LegacySighash, SIGHASH } from './sighash.js';
import { ScriptBuilder } from './script-builder.js';
import { WitnessBuilder } from './witness-builder.js';
import { ECDSA } from '../core/crypto/signatures/ecdsa.js';
import { Schnorr } from '../core/crypto/signatures/schnorr-BIP340.js';
/**
* Custom error class for transaction building
* @class TransactionBuilderError
* @extends Error
*/
class TransactionBuilderError extends Error {
constructor(message, code, details = {}) {
super(message);
this.name = 'TransactionBuilderError';
this.code = code;
this.details = details;
}
}
/**
* Transaction building constants
* @constant {Object}
*/
const TX_CONSTANTS = {
VERSION: 2,
DEFAULT_SEQUENCE: 0xffffffff,
RBF_SEQUENCE: 0xfffffffd,
DEFAULT_LOCKTIME: 0,
DUST_LIMIT: 546,
SIGHASH_ALL: 0x01,
SIGHASH_NONE: 0x02,
SIGHASH_SINGLE: 0x03,
SIGHASH_ANYONECANPAY: 0x80,
SIGHASH_DEFAULT: 0x00 // Taproot
};
/**
* Bitcoin transaction builder with SegWit/Taproot signing support
* @class TransactionBuilder
*/
class TransactionBuilder {
/**
* Create a transaction builder
* @param {string} [network='main'] - Network type
* @param {Object} [options={}] - Builder options
*/
constructor(network = 'main', options = {}) {
this.network = network;
this.version = options.version || TX_CONSTANTS.VERSION;
this.locktime = options.locktime || TX_CONSTANTS.DEFAULT_LOCKTIME;
this.inputs = [];
this.outputs = [];
this.witnesses = [];
this.schnorr = new Schnorr();
}
/**
* Add a transaction input
* @param {Object} input - Input details
* @param {string} input.txid - Previous transaction ID
* @param {number} input.vout - Output index
* @param {number} [input.value] - UTXO value in satoshis (required for signing)
* @param {Buffer|string} [input.scriptPubKey] - Previous output script
* @param {string} [input.address] - Previous output address
* @param {string} [input.type] - Address type (p2pkh, p2wpkh, p2tr)
* @returns {TransactionBuilder} this
*/
addInput(input) {
if (!input.txid || typeof input.txid !== 'string') {
throw new TransactionBuilderError('Invalid txid', 'INVALID_TXID');
}
if (typeof input.vout !== 'number' || input.vout < 0) {
throw new TransactionBuilderError('Invalid vout', 'INVALID_VOUT');
}
// Determine type from address if not provided
let type = input.type || input.addressType;
let scriptPubKey = input.scriptPubKey;
if (input.address && !type) {
const decoded = decodeAddress(input.address);
type = decoded.type;
}
if (input.address && !scriptPubKey) {
scriptPubKey = getScriptPubKey(input.address);
}
this.inputs.push({
txid: input.txid,
vout: input.vout,
sequence: input.sequence ?? TX_CONSTANTS.DEFAULT_SEQUENCE,
value: input.value,
scriptPubKey: scriptPubKey,
address: input.address,
type: type || 'p2wpkh',
scriptSig: Buffer.alloc(0),
signed: false
});
// Initialize witness slot
this.witnesses.push([]);
return this;
}
/**
* Add a transaction output
* @param {Object} output - Output details
* @param {string} [output.address] - Destination address
* @param {number} output.value - Amount in satoshis
* @param {Buffer} [output.scriptPubKey] - Custom scriptPubKey
* @returns {TransactionBuilder} this
*/
addOutput(output) {
if (!output.address && !output.scriptPubKey) {
throw new TransactionBuilderError('Address or scriptPubKey required', 'MISSING_OUTPUT');
}
if (typeof output.value !== 'number' || output.value < 0) {
throw new TransactionBuilderError('Invalid output value', 'INVALID_VALUE');
}
// Allow 0 value for OP_RETURN
const isOpReturn = output.scriptPubKey && output.scriptPubKey[0] === 0x6a;
if (output.value < TX_CONSTANTS.DUST_LIMIT && output.value !== 0 && !isOpReturn) {
throw new TransactionBuilderError('Output below dust limit', 'DUST_OUTPUT');
}
let scriptPubKey = output.scriptPubKey;
if (!scriptPubKey && output.address) {
scriptPubKey = getScriptPubKey(output.address);
}
this.outputs.push({
value: output.value,
scriptPubKey,
address: output.address
});
return this;
}
/**
* Add an OP_RETURN output
* @param {Buffer|string} data - Data to embed (max 80 bytes)
* @returns {TransactionBuilder} this
*/
addOpReturn(data) {
const script = ScriptBuilder.createOpReturn(data);
return this.addOutput({ value: 0, scriptPubKey: script });
}
/**
* Set locktime
* @param {number} locktime - Locktime value
* @returns {TransactionBuilder} this
*/
setLocktime(locktime) {
this.locktime = locktime;
return this;
}
/**
* Set version
* @param {number} version - Transaction version
* @returns {TransactionBuilder} this
*/
setVersion(version) {
this.version = version;
return this;
}
/**
* Enable Replace-by-Fee for an input
* @param {number} [inputIndex=null] - Specific input index, or all if null
* @returns {TransactionBuilder} this
*/
enableRBF(inputIndex = null) {
if (inputIndex !== null) {
if (inputIndex < 0 || inputIndex >= this.inputs.length) {
throw new TransactionBuilderError('Invalid input index', 'INVALID_INDEX');
}
this.inputs[inputIndex].sequence = TX_CONSTANTS.RBF_SEQUENCE;
} else {
for (const input of this.inputs) {
input.sequence = TX_CONSTANTS.RBF_SEQUENCE;
}
}
return this;
}
/**
* Set custom sequence for an input (for CSV/CLTV)
* @param {number} inputIndex - Input index
* @param {number} sequence - Sequence value
* @returns {TransactionBuilder} this
*/
setInputSequence(inputIndex, sequence) {
if (inputIndex < 0 || inputIndex >= this.inputs.length) {
throw new TransactionBuilderError('Invalid input index', 'INVALID_INDEX');
}
this.inputs[inputIndex].sequence = sequence;
return this;
}
/**
* Sign a single input
* @param {number} inputIndex - Index of input to sign
* @param {Buffer|string} privateKey - Private key (32 bytes)
* @param {number} [sighashType=0x01] - Sighash type
* @returns {Promise<TransactionBuilder>} this
*/
async signInput(inputIndex, privateKey, sighashType = TX_CONSTANTS.SIGHASH_ALL) {
if (inputIndex < 0 || inputIndex >= this.inputs.length) {
throw new TransactionBuilderError('Invalid input index', 'INVALID_INDEX');
}
const input = this.inputs[inputIndex];
if (input.value === undefined) {
throw new TransactionBuilderError(
'Input value required for signing',
'MISSING_VALUE',
{ inputIndex }
);
}
// Normalize private key
const keyBuffer = Buffer.isBuffer(privateKey)
? privateKey
: Buffer.from(privateKey, 'hex');
// Get public key
const publicKey = ECDSA.getPublicKey(keyBuffer, true);
// Build transaction object for sighash
const tx = this._buildForSigning();
// Get prevout info
const prevout = {
value: input.value,
scriptPubKey: input.scriptPubKey,
type: input.type
};
const inputType = input.type || 'p2wpkh';
switch (inputType) {
case 'p2tr': {
// Taproot key-path signing
const allPrevouts = this.inputs.map((inp, i) => ({
value: inp.value,
scriptPubKey: inp.scriptPubKey
}));
const taprootSighashType = sighashType === TX_CONSTANTS.SIGHASH_ALL
? TX_CONSTANTS.SIGHASH_DEFAULT
: sighashType;
const sighash = BIP341.calculate(tx, inputIndex, allPrevouts, taprootSighashType);
// Sign with Schnorr
const sigResult = await this.schnorr.sign(keyBuffer, sighash);
let signature = sigResult.signature;
// Append sighash type if not DEFAULT
if (taprootSighashType !== TX_CONSTANTS.SIGHASH_DEFAULT) {
signature = Buffer.concat([signature, Buffer.from([taprootSighashType])]);
}
// Build P2TR key-path witness
this.witnesses[inputIndex] = WitnessBuilder.buildP2TRKeyPath(signature);
break;
}
case 'p2wpkh': {
// SegWit P2WPKH signing
const pubkeyHash = hash160(publicKey);
const sighash = BIP143.forP2WPKH(tx, inputIndex, pubkeyHash, input.value, sighashType);
// Sign with ECDSA
const sigResult = ECDSA.sign(keyBuffer, sighash);
// Append sighash type to DER signature
const signature = Buffer.concat([sigResult.der, Buffer.from([sighashType])]);
// Build P2WPKH witness
this.witnesses[inputIndex] = WitnessBuilder.buildP2WPKH(signature, publicKey);
break;
}
case 'p2wsh': {
// SegWit P2WSH signing (requires witnessScript)
if (!input.witnessScript) {
throw new TransactionBuilderError(
'P2WSH requires witnessScript',
'MISSING_WITNESS_SCRIPT',
{ inputIndex }
);
}
const witnessScript = Buffer.isBuffer(input.witnessScript)
? input.witnessScript
: Buffer.from(input.witnessScript, 'hex');
// Calculate script code with length prefix
const scriptCode = Buffer.concat([
this._encodeVarInt(witnessScript.length),
witnessScript
]);
const sighash = BIP143.calculate(tx, inputIndex, scriptCode, input.value, sighashType);
// Sign with ECDSA
const sigResult = ECDSA.sign(keyBuffer, sighash);
const signature = Buffer.concat([sigResult.der, Buffer.from([sighashType])]);
// Build P2WSH witness (caller should add other signatures for multisig)
if (!this.witnesses[inputIndex] || this.witnesses[inputIndex].length === 0) {
this.witnesses[inputIndex] = [Buffer.alloc(0)]; // OP_0 for CHECKMULTISIG bug
}
this.witnesses[inputIndex].push(signature);
// Store witnessScript for finalization
input._witnessScript = witnessScript;
break;
}
case 'p2sh':
case 'p2sh-p2pkh': {
// Legacy P2SH (requires redeemScript)
if (!input.redeemScript) {
throw new TransactionBuilderError(
'P2SH requires redeemScript',
'MISSING_REDEEM_SCRIPT',
{ inputIndex }
);
}
const redeemScript = Buffer.isBuffer(input.redeemScript)
? input.redeemScript
: Buffer.from(input.redeemScript, 'hex');
const sighash = LegacySighash.calculate(tx, inputIndex, redeemScript, sighashType);
// Sign with ECDSA
const sigResult = ECDSA.sign(keyBuffer, sighash);
const signature = Buffer.concat([sigResult.der, Buffer.from([sighashType])]);
// Build P2SH scriptSig: <sig> <pubkey> <redeemScript>
this.inputs[inputIndex].scriptSig = ScriptBuilder.createP2SHScriptSig(
[signature, publicKey],
redeemScript
);
break;
}
case 'p2sh-p2wpkh': {
// Wrapped SegWit (BIP49): P2SH containing P2WPKH
const pubkeyHash = hash160(publicKey);
// Create P2WPKH redeemScript: OP_0 <20 bytes>
const redeemScript = ScriptBuilder.createP2WPKH(pubkeyHash);
// BIP143 sighash for the inner P2WPKH
const sighash = BIP143.forP2WPKH(tx, inputIndex, pubkeyHash, input.value, sighashType);
// Sign with ECDSA
const sigResult = ECDSA.sign(keyBuffer, sighash);
const signature = Buffer.concat([sigResult.der, Buffer.from([sighashType])]);
// scriptSig contains only the redeemScript push
this.inputs[inputIndex].scriptSig = Buffer.concat([
Buffer.from([redeemScript.length]),
redeemScript
]);
// Witness contains signature and public key
this.witnesses[inputIndex] = WitnessBuilder.buildP2WPKH(signature, publicKey);
break;
}
case 'p2sh-p2wsh': {
// Wrapped SegWit P2SH-P2WSH
if (!input.witnessScript) {
throw new TransactionBuilderError(
'P2SH-P2WSH requires witnessScript',
'MISSING_WITNESS_SCRIPT',
{ inputIndex }
);
}
const witnessScript = Buffer.isBuffer(input.witnessScript)
? input.witnessScript
: Buffer.from(input.witnessScript, 'hex');
// Create P2WSH redeemScript: OP_0 <32-byte SHA256 of witnessScript>
const { createHash } = await import('node:crypto');
const scriptHash = createHash('sha256').update(witnessScript).digest();
const redeemScript = ScriptBuilder.createP2WSH(scriptHash);
// Calculate script code
const scriptCode = Buffer.concat([
this._encodeVarInt(witnessScript.length),
witnessScript
]);
const sighash = BIP143.calculate(tx, inputIndex, scriptCode, input.value, sighashType);
// Sign with ECDSA
const sigResult = ECDSA.sign(keyBuffer, sighash);
const signature = Buffer.concat([sigResult.der, Buffer.from([sighashType])]);
// scriptSig contains only the redeemScript push
this.inputs[inputIndex].scriptSig = Buffer.concat([
Buffer.from([redeemScript.length]),
redeemScript
]);
// Build witness
if (!this.witnesses[inputIndex] || this.witnesses[inputIndex].length === 0) {
this.witnesses[inputIndex] = [Buffer.alloc(0)];
}
this.witnesses[inputIndex].push(signature);
input._witnessScript = witnessScript;
break;
}
case 'p2pkh':
default: {
// Legacy P2PKH signing
const sighash = LegacySighash.calculate(tx, inputIndex, input.scriptPubKey, sighashType);
// Sign with ECDSA
const sigResult = ECDSA.sign(keyBuffer, sighash);
// Append sighash type
const signature = Buffer.concat([sigResult.der, Buffer.from([sighashType])]);
// Build P2PKH scriptSig
this.inputs[inputIndex].scriptSig = ScriptBuilder.createP2PKHScriptSig(signature, publicKey);
break;
}
}
this.inputs[inputIndex].signed = true;
return this;
}
/**
* Sign all inputs with the same private key
* @param {Buffer|string} privateKey - Private key
* @param {number} [sighashType=0x01] - Sighash type
* @returns {Promise<TransactionBuilder>} this
*/
async signAllInputs(privateKey, sighashType = TX_CONSTANTS.SIGHASH_ALL) {
for (let i = 0; i < this.inputs.length; i++) {
await this.signInput(i, privateKey, sighashType);
}
return this;
}
/**
* Sign inputs w