Metamedica: A Blockchain-Based Platform for Secure and Interoperable Electronic Health Records

Abstract – The management of personal medical records presents a global challenge, especially in ensuring privacy, interoperability, and secure access. Traditional electronic health record systems are centralized, lacking transparency and efficient communication between healthcare entities. Metamedica is a decentralized web-based platform designed using Ethereum blockchain, MetaMask, IPFS, and smart contracts to empower patients with full control over their health data. The system enables secure uploading, sharing, and retrieval of records, while also allowing doctors and diagnostic centers to interact seamlessly through role-based permissions. By incorporating blockchain technology, Metamedica ensures data integrity, traceability, and protection against unauthorized access. The integration of IPFS for decentralized storage further strengthens the system’s efficiency and reliability. The use of smart contracts automates access control, enhancing trust and eliminating redundant processes in the healthcare workflow. Metamedica not only addresses the limitations of conventional EHR systems but also paves the way for a patient-centered, secure, and interoperable future in healthcare.