U.S. Patent 11005665 was awarded to ONE CONNECT SMART TECHNOLOGY CO., LTD. (SHENZHEN) on May 11, 2021 and is entitled “Blockchain-based secure transaction method, electronic device, system and storage medium.” The first named inventor is Yu Zhang of Hangzhou, . The abstract contains an overview of the patent disclosure:

A method includes: a supervisor writes a digital certificate and a corresponding first public key into an intelligent contract of a blockchain corresponding to an asset type to be supervised, so that all institutions with asset accounts under the asset type can obtain the first public key of the supervisor through the digital certificate, so as to generate an additive homomorphic key for homomorphic encryption of the balance of an asset account; when checking the balance of a new account of a transactor, the supervisor obtains a public key in a public-private key pair corresponding to the new account, generates an additive homomorphic key based on a supervision private key corresponding to the supervisor and a predetermined key exchange protocol and the public key in the public-private key pair according to the key exchange protocol, and decrypts the encrypted balance of the new account, using the generated additive homomorphic key. Link to Full Patent

This blockchain patent was originally filed on June 30, 2017  as U.S. Patent Application 16/305073 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 11005665. The primary examiner was Syed A Zaidi.

ONE CONNECT SMART TECHNOLOGY CO., LTD. (SHENZHEN), who is the original assignee of this patent, has at least 3 total granted patents in the United States as of the date of this article. This blockchain patent has been cited 0 times by other U.S. patents according to our law firm research, and can be considered an innovative patent in the field of cryptocurrency and blockchain.

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