U.S. Patent 10985917 was awarded to Ballet Global Inc. on April 20, 2021 and is entitled “Physical, tamper-evident cryptocurrency card.” The first named inventor is Bobby Christopher Lee of Las Vegas, NV. The abstract contains an overview of the patent disclosure:

A physical currency card (in some cases without any on-board source of power or computing capabilities) is configured to maintain access information for digital bearer assets. Public access information, like a cryptographic hash address operable to receive digital bearer assets or a public key operable to derive a cryptographic hash address operable to receive digital bearer access, may be visible upon inspection of the card such digital bearer assets may be transferred to the card in one or more transactions on a decentralized computing platform, like a blockchain-based decentralized computing platform. Private access information, like a secret, private key that corresponds to the public key (e.g., a public-private key-pair) or a representation of the private key (like a ciphertext thereof) and corresponding encryption key, is physically concealed with tamper-evident components such that a user can readily determine whether the private access information was divulged. Link to Full Patent

This blockchain patent was originally filed on September 11, 2019  as U.S. Patent Application 16/568182 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 10985917. The primary examiner was Gary C Hoge.

Ballet Global Inc., who is the original assignee of this patent, has at least 4 total granted patents in the United States as of the date of this article. This blockchain patent has been cited 1 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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