Documentation Index
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Add a pre-computed signature to a transparent input
function append_signature(
pczt: WasmPczt,
input_index: number,
pubkey: string,
signature: string
): WasmPczt
func AppendSignature(
pczt *Pczt,
inputIndex uint32,
pubkey []byte,
signature []byte,
) (*Pczt, error)
fun appendSignature(
pczt: Pczt,
inputIndex: UInt,
pubkey: ByteArray,
signature: ByteArray
): Pczt
[DER signature (70-72 bytes)] + [0x01]
import { secp256k1 } from '@noble/curves/secp256k1';
// Get sighash
const sighash = t2z.get_sighash(pczt, 0);
// Sign
const sig = secp256k1.sign(hexToBytes(sighash), privateKey);
const derSig = sig.toDERRawBytes();
// Append sighash type
const sigWithType = new Uint8Array([...derSig, 0x01]);
// Add to PCZT
pczt = t2z.append_signature(pczt, 0, pubkeyHex, bytesToHex(sigWithType));
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