Design of Blockchain Traceability Mechanism for Data Privacy Protection

As the importance of data privacy protection continues to grow, blockchain technology has emerged as a new avenue for safeguarding data privacy due to its immutable and decentralized characteristics. This paper proposes a blockchain-based provenance mechanism designed for data privacy protection, leveraging blockchain technology to ensure data integrity and traceability while securing personal privacy. First, the limitations of existing data protection mechanisms are analyzed, and the application of blockchain in various scenarios for data provenance is elaborated. Next, the critical role of smart contracts in the automatic execution of data processing and access control rules is explored, along with how blockchain's transparency and anonymity protect user privacy. Additionally, a novel blockchain architecture combining zero-knowledge proof technology is proposed to enable encrypted processing and verification of sensitive data without exposing the actual content. Finally, a series of experiments validate the effectiveness and efficiency of this mechanism. This research not only provides a new technical approach for data privacy protection but also lays a theoretical foundation for the application of blockchain in the field of data security.