American Express Files Patent for Blockchain-Powered Proof-of-Payment System

The travel arm of financial services giant American Express has filed a patent for a blockchain-based proof-of-payment system. Financial services giant American Express (Amex) has filed a patent for a blockchain-based proof-of-payment system, according to filing published by the U.S. Patent and Trademark Office (USPTO) Thursday, July 12. The patent’s applicant is listed as American […]

The following blog post American Express Files Patent for Blockchain-Powered Proof-of-Payment System is courtesy of: https://www.justbitcoinnews.com

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