American Express Latest Blockchain Patent Application to Provide Payment Evidence

An application released last week by the US Patent and Trademark Office shows that multinational financial services corporation American Express (AmEx) is seeking to patent a blockchain payment system.
Patent details
The application details a blockchain-based system to aid financial transactions, specifically in terms of confirming transaction totals and merchant identities. It would also encrypt the proof-of-payment details using the blockchain’s public key, maintaining this on a first blockchain node.

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