ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,755,283, issued on Oct. 6, was assigned to Ant Blockchain Technology (Shanghai) Co. Ltd. (Shanghai).

"Blockchain-based user element authorization methods and apparatuses" was invented by Jiawei Liu (Hangzhou, China), Chenkan Shen (Hangzhou, China), Ge Jin (Hangzhou, China), Chifei Zhang (Hangzhou, China) and Fansheng Kong (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Example blockchain-based user element authentication methods, apparatuses, systems and computer-readable media are provided. In an example, a node device in a blockchain receives a smart contract invocation transaction, where the smart contract invocation transaction includ...