verify method
Implementation
@override
bool verify(String signature, String message) {
final compressedPubKey =
EcdaSignature.privateKeyToPublicKey(privateKey).toStr();
final signedMessage = Signature.fromCompactBytes(signature.toUint8List());
final pubKey = PublicKey.fromHex(compressedPubKey);
return pubKey.verify(signedMessage, message.toUint8List());
}