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 Express Travel Related Services Co., Inc., Amex’s travel arm.
According to the patent filing, the encrypted data could then securely be propagated to a second blockchain node.
“ The patent then outlines various use cases for such a secured system, suggesting hotel reservations, real estate rental, and ticketless access to events and venues.
Back in October 2017, American Express Travel Related Services Co., Inc., filed an earlier patent for a personalized rewards system that would also harness blockchain technology to incentivize its customers.

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