Research on Blockchain Privacy Preservation in Healthcare Systems

Medical information is of great significance in people's daily lives, being closely related to aspects such as insurance, drug records, and driving licenses. To address the issue of medical data leakage, this paper presents a decentralized zero-knowledge proof mechanism based on blockchain technology for privacy preservation in healthcare systems. This mechanism offers a viable solution for secure data storage and application. Additionally, this paper conducts an in-depth literature review of current research, analyzes the advantages and disadvantages of existing blockchain-based zero-knowledge proof mechanisms, and elaborates and summarizes previous solutions by comparing the proposed mechanism with traditional ones. Experimental results demonstrate that the proposed mechanism has lower time and space complexity compared to traditional methods and functions effectively in a decentralized network.