@arklabs/wallet-sdk/dist/esm/forfeit.js

Bitcoin wallet SDK with Taproot and Ark integration

import { SigHash, Transaction } from "@scure/btc-signer";
export function buildForfeitTx({ connectorInput, vtxoInput, vtxoAmount, connectorAmount, feeAmount, vtxoPkScript, connectorPkScript, serverPkScript, txLocktime, }) {
    const tx = new Transaction({
        version: 2,
        lockTime: txLocktime,
    });
    // Add connector input
    tx.addInput({
        txid: connectorInput.txid,
        index: connectorInput.vout,
        witnessUtxo: {
            script: connectorPkScript,
            amount: connectorAmount,
        },
        sequence: 0xffffffff,
    });
    // Add VTXO input
    tx.addInput({
        txid: vtxoInput.txid,
        index: vtxoInput.vout,
        witnessUtxo: {
            script: vtxoPkScript,
            amount: vtxoAmount,
        },
        sequence: txLocktime ? 0xfffffffe : 0xffffffff, // MAX_SEQUENCE - 1 if locktime is set
        sighashType: SigHash.DEFAULT,
    });
    const amount = BigInt(vtxoAmount) + BigInt(connectorAmount) - BigInt(feeAmount);
    // Add main output to server
    tx.addOutput({
        script: serverPkScript,
        amount,
    });
    return tx;
}