getHash method

Implementation

String getHash() {
  if (txnSignature == null && (signers?.isEmpty ?? true)) {
    throw ArgumentError("Cannot get the hash from an unsigned Transaction.");
  }
  final encodeStr =
      "$_transactionHashPrefix${toBlob(forSigning: false)}".toUpperCase();
  final toDigest =
      bytesToHex(hash512(hexToBytes(encodeStr))).substring(0, 64);
  return toDigest.toUpperCase();
}