U.S. Patent 11080665 was awarded to Blockstream Corporation on August 03, 2021 and is entitled “Cryptographically concealing amounts and asset types for independently verifiable transactions.” The first named inventor is Adam Back of San Francisco, CA. The abstract contains an overview of the patent disclosure:

Systems and methods are described for encrypting amounts and asset types of a verifiable transaction on a blockchain ledger. For each asset, an asset tag is blinded, multiplied by the amount of the asset, and the product is blinded again to create an encrypted amount of the asset. Both encrypted amount of the asset and a corresponding generated output value are within a value range, and the sum of the encrypted input value and the encrypted output value equals zero. Rangeproofs for each of the encrypted output values are associated with a different public key. Each public key is signed with a ring signature based on a public key of a recipient. A second ring signature is used to verify each asset tag, where the private key of the second ring signature for each asset is a difference between a first blinding value and an output coefficient. Link to Full Patent

This blockchain patent was originally filed on February 12, 2018  as U.S. Patent Application 15/894793 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 11080665. The primary examiner was James D Nigh.

Blockstream Corporation, 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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