ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,737,446, issued on Sept. 15, was assigned to AMERICAN EXPRESS TRAVEL RELATED SERVICES Co. Inc. (New York).

"Relationship and attribute management using decentralized identifiers" was invented by Andrew Lei (Brooklyn, N.Y.), Mukund Shankar SimhaRaghu (Glendale, Ariz.), Emery Schoenly (Salisbury, Conn.) and Steven Todd Johnson (Tempe, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are various approaches for relationship and attribute management are described. In some examples, a verifier service performs a verification process using a relationship decentralized identifier (DID) that provides proof of a relationship between the holder and ...