Created
June 10, 2020 07:11
-
-
Save dlarchikov/fe463c260d527f8d505a9379ad3505b2 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import coinSelect from 'coinselect' | |
import { address as Address, Network, networks, payments, Psbt, Transaction, ECPair } from 'bitcoinjs-lib' | |
const sigwitInputs = [ | |
{ | |
tx_hash: '2e1bc58c73574bd57a3155b1118cf942b43dc8dd9fe7786f6c8110b59c298f5d', | |
block_height: 632654, | |
tx_input_n: -1, | |
tx_output_n: 0, | |
value: 98320, | |
ref_balance: 98320, | |
spent: false, | |
confirmations: 134, | |
confirmed: '2020-06-01T21:41:00Z', | |
double_spend: false, | |
script: '76a91468cc0558fb58119c005bf89f320a243bc580d19988ac', | |
}, | |
] | |
const utxos = sigwitInputs.map(i => { | |
return { | |
txId: i.tx_hash, | |
vout: i.tx_output_n, | |
value: i.value, | |
scriptPubKey: i.script, | |
// redeemScript: i.redeemScript, | |
// nonWitnessUtxo: Buffer.from(i.hash, 'hex'), | |
witnessUtxo: { | |
script: Buffer.from(i.script, 'hex'), | |
value: i.value, | |
}, | |
} | |
}) | |
const utxosSum = utxos.reduce((sum, i) => sum + i.value, 0) | |
const targets = [ | |
{ | |
address: '3Qg2QXYAtjrKJj7fE5j9tGfRsLSVUoSGs8', | |
value: 95440, | |
}, | |
] | |
let { inputs, outputs, fee } = coinSelect(utxos, targets, 15) | |
console.log({ fee, utxosSum, max: utxosSum - fee }) | |
outputs = outputs.map(i => { | |
if (!i.address) { | |
i.address = '1AZ7ga5K2taigmTHrHFngb5UDj5Ej4jUgL' | |
} | |
return i | |
}) | |
const keyPair = ECPair.fromWIF('KxzypGRWQA6CqAAwCh6R4YpPE2DHaRbLwTiaPz1RnMLZRj3mdX76', networks.bitcoin) | |
const a = payments.p2wpkh({ pubkey: keyPair.publicKey, network: networks.bitcoin }) | |
const b = payments.p2sh({ redeem: a, network: networks.bitcoin }) | |
const redeemScript = b.redeem.output.toString('hex') | |
console.log(b.address.toString()) | |
console.log({ utxosSum, inputs, outputs, fee, utxos, redeemScript }) | |
const psbt = new Psbt({ network: networks.bitcoin }) | |
inputs.forEach(input => | |
psbt.addInput({ | |
hash: input.txId, | |
index: input.vout, | |
redeemScript: Buffer.from(redeemScript, 'hex'), | |
witnessUtxo: input.witnessUtxo, | |
}) | |
) | |
outputs.forEach(output => { | |
psbt.addOutput({ | |
address: output.address, | |
value: output.value, | |
}) | |
}) | |
// for (let i = 0; i < psbt.inputCount; i++) { | |
// psbt.signInput(i, keyPair) | |
// } | |
psbt.signAllInputs(keyPair) | |
psbt.finalizeAllInputs() | |
console.log(psbt.extractTransaction().toHex()) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment