code: def verify_signature(self, address, signature, hexdata):
          
          try:
              address = deserialize.address(self.testnet, address)
              data = deserialize.binary(hexdata)
              signature = deserialize.signature(signature)
              return control.verify_signature(self.testnet, address,
                                              signature, data)
          except exceptions.InvalidAddress:
              return False
docs: Verify <signature> of <hexdata> by <address>.