ALEXANDRIA, Va., July 9 -- United States Patent no. 12,354,084, issued on July 8, was assigned to MasterCard International Inc. (Purchase, N.Y.).
"Offline coin protocol" was invented by Erick Andrew (New York), Issidor Iliev (White Plains, N.Y.) and Naveen Garg (Chappaqua, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, apparatus and systems for verifying coin ownership are disclosed. In an embodiment, a coin service provider identifies an online session initiated by a wallet application and a next coin to verify, receives information associated with the next coin from a wallet application, determines that ownership of the next coin was transferred out of the wallet application since the last ti...