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.

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.

This encrypted data would then be propagated to a second blockchain node which would allow a smart device to decrypt this, sharing the information with a secondary smart device and triggering the correct payment to take place.

The concept was developed with the objective of providing a stronger quality of payment evidence for merchants and customers that goes beyond what is offered on a standard receipt. This blockchain solution would have the potential to offer an extended look into the details of each transaction, covering such elements as contract and transaction data.

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