ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,743,682, issued on Sept. 22, was assigned to NATIONAL CURRENCY TECHNOLOGIES INC. (Ashburn, Va.).

"Blockchain-based transaction mechanisms" was invented by Joshua Mitchell Povsner (Ashburn, Va.), Christopher Michael Carthy (Carmel, Calif.) and John Ellis Stafira (Dallas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes obtaining a first set of digital tokens of the single type and a second set of digital tokens of the single type from a pool; individually, separately and uniquely marking a record for each of the first set of digital tokens of the single type with a first identifiable characteristic by adding data with the first identifiab...