New pending patent applications are published by the USPTO on Thursdays. Both of today's Spotlight Applications continue the theme of blockchain (distributed ledger, smart contracts) and digital rights management broadly construed. Assigned to Cisco, the first application discloses techniques including an instruction that is received at a blockchain server from a first digital rights management (DRM) client, the instruction including an instruction to transfer a DRM license to an encrypted content item to a second DRM client. Assigned to Jeff Stollman, the second application discloses techniques for extending the utility of blockchains through use of related child blockchains.
20180322259, "Method and system for content and service sharing," assigned to CIsco.
In one embodiment, an instruction is received at a blockchain server from a first digital rights management (DRM) client, the instruction including an instruction to transfer a DRM license to an encrypted content item to a second DRM client. A block to be recorded in a blockchain, is created, the block including a content item ID of said encrypted content item, one of a device ID of a device including the second DRM client or a user ID of a user of the second DRM client, DRM license information for said DRM license, and a DRM decryption key for decrypting said encrypted content item. The block is recorded in the blockchain. A confirmation message is sent to the second DRM client confirming that the block was written to the blockchain. Related systems, methods, and apparatuses are also described.
20180323963, "Systems and methods for extending the utility of blockchains through use of related child blockchains," assigned to Jeff Stollman.
A system for extending the utility of blockchain environments when such environments become too large or complex, is disclosed. The system systematically creates a second generation, or child blockchain that can retain machine-readable links to the parent blockchain which, in turn, can be archived and referenced, when necessary, for historical reference. Accordingly, the system serves to reduce the size of the working blockchain thereby making it easier to store the blockchain, and further serves to increase the speed of queries to interrogate the current state of the blockchain. By reducing the size of the working blockchain, the present invention seeks to extend the utility of large blockchains by segregating and archiving historical or older transactions recorded in the blockchain. The system and process further includes methodologies to create links between the current blockchain and the archived sections of the blockchain to ensure the integrity of the full historical ledger.