U.S. Patent 11151558 was awarded to AMERICAN EXPRESS TRAVEL RELATED SERVICES COMPANY, INC. on October 19, 2021 and is entitled “Zero-knowledge proof payments using blockchain.” The first named inventor is Andras L. Ferenczi of Peoria, AZ. The abstract contains an overview of the patent disclosure:

A zero-knowledge proof purchase system and process using blockchain is disclosed. The system may comprise a customer device, a merchant system, an issuer system, and a blockchain network having a zero-knowledge proof (ZKP) smart contract. The system may implement a zero-knowledge proof algorithm having a key generator function, a proof function, and a validate function. Each function may be configured to perform various tasks in the system to support and enable zero-knowledge proof purchases. Link to Full Patent

This blockchain patent was originally filed on December 12, 2018  as U.S. Patent Application 16/217734 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 11151558. The primary examiner was James D Nigh.

AMERICAN EXPRESS TRAVEL RELATED SERVICES COMPANY, INC., who is the original assignee of this patent, has at least 1156 total granted patents in the United States as of the date of this article. This blockchain patent has been cited 0 times by other U.S. patents according to our law firm research, and can be considered an innovative patent in the field of cryptocurrency and blockchain.

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