Trusted identity model based on block chain smart contract

The invention discloses a trusted identity model based on a block chain smart contract, wherein the model comprises the following steps: releasing a trusted identity smart contract, and registering an identity by a CA node to obtain a block chain digital certificate; registering the identity by a user to the CA node to obtain the block chain digital certificate; completing, by the service providermm, user identity authentication to the CA node through the user block chain digital certificate. According to the invention, the PKI system is introduced into the block chain, the block chain digital certificate and the CA-related smart contract are designed, the trusted identity based on the smart contract is realized, the identity is ensured to be trusted, the transaction is safe, and the law compliance is satisfied. 本发明公开了一种基于区块链智能合约的可信身份模型，包括以下步骤：可信身份智能合约发布，CA节点注册身份获得区块链数字证书：用户向CA节点注册身份获得区块链数字证书；服务商通过用户区块链数字证书，向CA节点完成用户身份认证。本发明将PKI体系引入区块链，设计了区块链数字证书及CA相关智能合约，实现了基于智能合约的可信身份，确保身份可信、交易安全且满足法律合规性。