As digitalization penetrates all aspects of human life, data security and privacy protection have become increasingly important. The centralized model of Web2 makes user data prone to misuse and theft, highlighting the drawbacks of this structure. The emergence of Web3 addresses the need for higher data security and stronger privacy protection. By leveraging the decentralized nature of blockchain, Web3 enables transparent processing and secure storage of user data, allowing users to truly own and control their data.