American Express Plans to Use Blockchain to Prove When a Transaction Occurs

American Express plans to use blockchain to prove when a transaction occurs, as it explains in its patent application¬†released by the U.S. Patent and Trademark Office last week, reported Coindesk on June 16. The filing explains a method using a¬†"proof-of-payment system" that would "receive a payment confirmation including a transaction amount and a merchant identifier." … Continue reading American Express Plans to Use Blockchain to Prove When a Transaction Occurs