Medvault: A Decentralized Medical Record Storage System with Provenance Awareness

This report presents a decentralized medical record storage system with provenance awareness to address challenges in healthcare data management. Traditional centralized systems face data breaches and inefficiencies, limiting patient control. The proposed system leverages blockchain for secure, decentralized storage, eliminating single points of failure and enhancing privacy. A Directed Acyclic Graph (DAG) structure ensures transparency by tracking the complete history of each record. A dynamic access control mechanism grants permissions based on data lineage, improving efficiency. To prevent misuse, an auditing feature based on Nash equilibrium incentivizes proper reporting. Smart contracts automate key processes, reducing intermediaries and ensuring seamless transactions. This approach empowers patients with greater control over their health data while enabling secure and efficient sharing among healthcare providers. The system lays the foundation for improved data management and potential AI integration for future advancements.