Blockchains (smart contracts, distributed ledgers) and rights management broadly construed are the themes of today's Spotlight Applications. Assigned to CapOne, the first application discloses techniques for building blockchains for verifying assets for smart contracts. Assigned to R3 Ltd (GB), the second application discloses techniques for a sealed distributed ledger system ensuring privacy of transactions.
20210390549, "Systems and methods for building blockchains for verifying assets for smart contracts," assigned to Capital One.
Systems and methods build blockchains and verify assets for smart contracts. A system includes a memory, a blockchain, a set of nodes, a set of verifiers, a set of miners, and a consensus protocol. The memory can have a block data structure representing a transaction for an asset having an identifier and at least one verifiable characteristic. The consensus protocol can include rules for: receiving the stake at risk from the verifiers, providing the reputational score to the verifiers, verifying the verifiable characteristic of the asset by the verifiers, cryptographic verification by the miners, adding the new block to the blockchain by the miners, providing the reward to the miners, and distributing the copy of the blockchain to each node.
20210391979, "Sealed distributed ledger system," assigned to R3 Ltd. (GB)
A system for ensuring privacy of transactions is provided. The system may be performed by a computing system during execution of trusted code within a secure enclave of the computing system. The system receives an indication of a transaction. The system validates the transaction. The system encrypts the validated transaction using an encryption key of the trusted code. The system requests untrusted code of the computing system to store the encrypted validated transaction in a portion of a data store. The untrusted code cannot decrypt the encrypted validated transaction that is stored in the data store. Rather, only the trusted code can decrypt the encrypted validated transaction.