Alibaba Group Holding Limited
Blockchain-based identity authentication method, apparatus, and device

Abstract:

Embodiments of the specification provide a blockchain-based identity authentication method, apparatus, and device. An exemplary method includes: obtaining a user identity authentication request, the user identity authentication request comprising first to-be-authenticated biometric feature information of a user and to-be-authenticated identity information of the user; querying, through a first smart contract in a blockchain, biometric feature information based on the to-be-authenticated identity information in a user identity data node in the blockchain; determining, through the first smart contract, whether the biometric feature information is consistent with the first to-be-authenticated biometric feature information; if yes, generating an authentication result; generating, through a second smart contract, a user identity authentication record comprising the first to-be-authenticated biometric feature information, the to-be-authenticated identity information, and the authentication result; and storing the user identity authentication record into the blockchain.