U.S. Patent 10607032 was awarded to Blockchain ASICs Inc. on March 31, 2020 and is entitled “Cryptographic ASIC for key hierarchy enforcement.” The first named inventor is Edward L. Rodriguez De Castro of San Francisco, CA. The abstract contains an overview of the patent disclosure:

A cryptographic ASIC and method for enforcing a derivative key hierarchy for managing an information stream. A programming user provides a user passphrase that is used to generate a transform key and is then deleted. The transform key is inaccessibly, invisibly, and indelibly generated and stored in a one-time programmable memory with externally generated programming pulses during or after manufacture, without being reported out to the user who provided the user passphrase. A transform-enabled cryptographic circuit or method customized with the transform key processes a predetermined input message to obtain a predetermined output message indicating an identity of a particular information stream. Other input messages may also be processed, such as for verifying a blockchain, but replication requires knowledge of the transform key. Only a programming user with knowledge of the user passphrase is capable of creating an information stream, such as a blockchain. Link to Full Patent

This blockchain patent was originally filed on March 04, 2019  as U.S. Patent Application 16/292142 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 10607032. The primary examiner was Evans Desrosiers.

Blockchain ASICs Inc., who is the original assignee of this patent, has at least 18 total granted patents in the United States as of the date of this article. This blockchain patent has been cited 6 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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