code: async def verify(self, message: bytes, signature: bytes, verkey: str = None) -> bool:
          
  
          LOGGER.debug('Wallet.verify >>> message: %s, signature: %s, verkey: %s', message, signature, verkey)
  
          if not message:
              LOGGER.debug('Wallet.verify <!< No message to verify')
              raise AbsentMessage('No message to verify')
  
          if not signature:
              LOGGER.debug('Wallet.verify <!< No signature to verify')
              raise AbsentMessage('No signature to verify')
  
          if not self.handle:
              LOGGER.debug('Wallet.verify <!< Wallet %s is closed', self.name)
              raise WalletState('Wallet {} is closed'.format(self.name))
  
          rv = await crypto.crypto_verify(verkey or self.verkey, message, signature)
  
          LOGGER.debug('Wallet.verify <<< %s', rv)
          return rv
docs: Verify signature against input signer verification key (default anchor's own).
          Raise AbsentMessage for missing message or signature, or WalletState if wallet is closed.
  
          :param message: Content to sign, as bytes
          :param signature: signature, as bytes
          :param verkey: signer verification key (default for anchor's own)
          :return: whether signature is valid