docs: def record_tx(self, origin, destination, amount,
                    outcome, destination_id=None):
          """Records a transaction in the database.
  
          Args:
            origin (str): user_id of the sender
            destination (str): coin address or user_id of the recipient
            amount (str, Decimal, number): amount to send
            outcome (str, bool): the transaction hash if this is a "sendfrom"
                                 transaction; for "move", True if successful,
                                 False otherwise
            destination_id (str): the destination account label ("move" only)
  
          Returns:
            str or bool: the outcome (input) argument
  
          """
          # "move" commands
          if destination_id:
              tx = db.Transaction(
                  txtype="move",
                  from_user_id=origin,
                  to_user_id=destination_id,
                  txdate=datetime.now(),
                  amount=amount,
                  currency=COINS[self.coin]["ticker"],
                  to_coin_address=destination,
              )
  
          # "sendfrom" commands
          else:
              self.logger.debug(self.gettransaction(outcome))
              confirmations = self.gettransaction(outcome)["confirmations"]
              last_confirmation = datetime.now() if confirmations else None
              tx = db.Transaction(
                  txtype="sendfrom",
                  from_user_id=origin,
                  txhash=outcome,
                  txdate=datetime.now(),
                  amount=amount,
                  currency=COINS[self.coin]["ticker"],
                  to_coin_address=destination,
                  confirmations=confirmations,
                  last_confirmation=last_confirmation
              )
          db.session.add(tx)
          db.session.commit()
          return outcome