Patent ID: 11941627
Assignee: AMERICAN EXPRESS TRAVEL RELATED SERVICES COMPANY, INC.
Field: IT methods for management (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method, comprising:
requesting, by a merchant system in electronic communication with a merchant blockchain wallet, a merchant public key and a merchant private key from the merchant blockchain wallet;
generating, by the merchant system, a smart contract based at least in part on an input regarding a proposed good or service;
selecting, by the merchant system, the smart contract;
deploying, by the merchant system, the smart contract to a blockchain;
registering, by the merchant system, the deployed smart contract with an issuer system, wherein registering further comprises:
transmitting, by the merchant system in electronic communication with the issuer system, a merchant ID, the merchant public key, and the deployed smart contract to the issuer system to register a merchant-to-smart contract relationship, which links the deployed smart contract with the merchant ID; and
receiving, by the merchant system in electronic communication with the issuer system, a registration confirmation;

receiving, from a user device, a request for a transaction to purchase the good or service based on the deployed smart contract, the transaction request comprising a transaction account number;
transmitting, by the merchant system to the issuer system, a transaction authorization request comprising the merchant ID and the transaction account number; and
receiving, by the merchant system from the deployed smart contract via the issuer system, a payment receipt, the payment receipt comprising a status of the transaction.