Smart contracts (blockchains, distributed ledgers) and rights management broadly construed are the themes of today's Spotlight Applications. Assigned to Jingdong, the first application discloses techniques for developing a smart contact. Assigned to nChain Holdings, the second application discloses techniques for encoding a digital contract between first and second parties of a blockchain network.
20220278860, "System, method and apparatus for developing smart contract," assigned to Jingdong Technology Information Technology Co., Ltd. (CN)
A system, a method and a device for developing a smart contract are provided. A particular embodiment of the system comprises a specification acquisition module configured to acquire specification of a target smart contract interface, a client development module configured to generate, on the basis of the specification of the target smart contract interface, a smart contract client side interface and a smart contract client side agent, the smart contract client side interface and the smart contract client side agent being used to construct a client smart contract application, and a server development module configured to generate, on the basis of the interface specification of the target smart contract, a smart contract server interface and a smart contract server skeleton, the smart contract server interface and the smart contract server skeleton being used to construct a server smart contract.
20220278859, "Digital contracts using blockchain transactions," assigned to nChain Holdings Limited (AG).
A computer-implemented method of encoding a digital contract between first and second parties of a blockchain network, the digital contract being for transferring an amount of a digital asset from the first to the second party based on a condition being fulfilled; the method comprising: obtaining a plurality of data elements, each representing a different contract condition, wherein at least one of the conditions is linked to the second party; generating a hash tree based on the data elements, wherein the hash tree comprises: i) first leaf hashes generated by hashing a respective data element, and second leaf hashes comprising at least one hash key generated by hashing a secret value known only to the trusted third party, ii) internal hashes, and iii) a root hash; and making the root hash available to the first party for inclusion in a transaction of the blockchain.