def validate_timestamp_and_nonce(self, client_key, timestamp, nonce,
                                     request, request_token=None,
                                     access_token=None):
        log.debug('Validate timestamp and nonce %r', client_key)
        nonce_exists = self._noncegetter(
            client_key=client_key, timestamp=timestamp,
            nonce=nonce, request_token=request_token,
            access_token=access_token
        )
        if nonce_exists:
            return False
        self._noncesetter(
            client_key=client_key, timestamp=timestamp,
            nonce=nonce, request_token=request_token,
            access_token=access_token
        )
        return True
Takes in a base 58 check string and returns: the version byte, the
dataset/ETHPy150Open lepture/flask-oauthlib/flask_oauthlib/provider/oauth1.py/OAuth1RequestValidator.validate_timestamp_and_nonce--crossover with--dataset/ETHPy150Open blockstack/pybitcoin/pybitcoin/b58check.py/b58check_unpack