U.S. Patent 10819523 was awarded to INTERNATIONAL BUSINESS MACHINES CORPORATION on October 27, 2020 and is entitled “Guarantee of ledger immutability.” The first named inventor is Jeronimo Irazabal of Buenos Aires, . The abstract contains an overview of the patent disclosure:

An example operation may include one or more of connecting, by an attester node, to a source blockchain network configured to store hashes of source blocks, collaboratively coupling, by the attester node, the source blockchain network with a target blockchain network configured to store hashes of target blocks, receiving, by the attester node, a request from the source blockchain network to store the hash of the source block on the target blockchain network, confirming, by the attester node, that the source network has a previously stored hash of the target block, in response to the confirmation that the source blockchain network has a previously stored hash of the target block, allowing, by the attester node, to store the hash of the source block on the target blockchain network, and continuing, by the attester node, a collaboration between the source blockchain network and the target blockchain network. Link to Full Patent

This blockchain patent was originally filed on August 30, 2018  as U.S. Patent Application 16/116957 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 10819523. The primary examiner was Sher A Khan.

INTERNATIONAL BUSINESS MACHINES CORPORATION, who is the original assignee of this patent, has at least 150818 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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