U.S. Patent 11121870 was awarded to MASTERCARD INTERNATIONAL INCORPORATED on September 14, 2021 and is entitled “Method and system for interacting public and private blockchains with controlled participation.” The first named inventor is Shuvam Sengupta of Haryana, . The abstract contains an overview of the patent disclosure:

A method for controlling participation in a blockchain based on time includes: storing participant profiles, each including a public key of a cryptographic key pair and a period of time; storing a blockchain comprised of a plurality of blocks, each including at a block header and data values; receiving a block submission from a specific computing system including a digital signature and a new data value; verifying the digital signature based on the public key stored in a specific participant profile related to the specific computing system; verifying that the specific computing system is eligible for participation in the blockchain based on the period of time included in the specific participant profile and a present time; generating a new block comprised of a block header and the new data value; and transmitting the generated new block to nodes associated with the blockchain. Link to Full Patent

This blockchain patent was originally filed on October 12, 2017  as U.S. Patent Application 15/782416 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 11121870. The primary examiner was John W Hayes.

MASTERCARD INTERNATIONAL INCORPORATED, who is the original assignee of this patent, has at least 1445 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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