sigHash method
Implementation
Uint8List sigHash(Tx tx, int inputIndex, {int forkId = 0}) {
final pending = _inputs[inputIndex];
final hasher = ForkedHasher(forkId: forkId);
return hasher.hash(
tx,
inputIndex,
pending.hashType,
prevScript: pending.scriptPubKey,
amount: pending.value,
);
}