Blockchains (smart contracts, distributed ledgers) and rights management broadly construed are the themes of today's Spotlight Patents. Assigned to NEC (JP), the first patent addresses techniques for securing smart contracts in blockchains. assigned to Advanced New Technologies (KY), the second patent addresses techniques for copyright allocation for blockchain-based work.
11,144,893, "Method and system for securing smart contracts in blockchains," assigned to NEC (JP).
A method for securing smart contracts in a blockchain includes receiving in the blockchain a contract creation transaction having a control flow graph (CFG) and contract code for a smart contract to be created. The contract creation transaction is verified by checking a signature of a creator of the smart contract and determining that the CFG is correct based on the contract code. The verified contract creation transaction is included as a block in a distributed ledger of the blockchain.
11,144,618, "Methods and apparatuses for copyright allocation for blockchain-based work," assigned to Advanced New Technologies Co., Ltd. (KY)
One or more embodiments of the present specification provide methods and apparatuses for copyright allocation for a blockchain-based work, which are applied to a blockchain network that includes an original author client device, a co-creation participating user client device, and a first node device. The method includes the following: obtaining, by the first node device, a first target transaction from a distributed database of the blockchain, where the first target transaction includes co-creation participating behavior data of the co-creation participating user for a target work, and the target work is originally created by the original author; and invoking a smart contract corresponding to copyright allocation for the target work, executing logic declared in the smart contract for allocating a copyright share to the co-creation participating user based on the co-creation participating behavior data, and allocating a copyright share of the target work to the