AmEx Applies For Patent To Put Proof Of Payment On Blockchain



On Thursday, the US Patent and Trademark Office (USPTO) published a blockchain-related patent application that was filed in January 2017 by American Express Travel Related Services Company Inc., which is a travel-based subsidiary of the American Express Company.

from https://www.ethnews.com/amex-applies-for-patent-to-put-proof-of-payment-on-blockchain
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