Advanced New Technologies Co., Ltd. (Grand Cayman, KY)

Systems, methods, and computer programs and computer programs, which are encoded on computer storage media for blockchain-based data authentication as described in this. One method involves receiving, from a blockchain node a transaction to acquire data that the user makes to acquire target data owned by a user, determining by the blockchain notde that the user has authorized the target data and then performing a smart contract invoked in response to the data acquisition transaction , to issue an authorisation token to the user. The authorization token is then transmitted to a privacy computing platforms.

Blockchain technology (also referred to as distributed ledger technology) is a decentralized , distributed database technology, and is distinguished by its transparency, decentralization, openness as well as tamper-resistant, trustworthiness, etc. Therefore, it is suitable for a variety of applications that require high data reliability.

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