Empowering healthcare with BIEH - blockchain inter-operable electronic health record scheme

The transition from an Electronic Medical Record (EMR) to an Electronic Health Record (EHR) based system has allowed for resource savings and effective data transactions between patients and doctors. However, this transition poses threats to security, privacy, and validation. The proposed research explores integrating Aadhaar and blockchain technology to create an interoperable EHR system that ensures patient data’s secure preservation and transmission, prioritizing data integrity, privacy, and accessibility. Implementing the proposed system in solidity has allowed to incorporate of the two-factor authentication based on unique key generation, empowering patients to control access and distribution of their health records over time. The Aadhaar acts as an infallible verifier, ensuring precise record linkage through Verifiable Credentials within the blockchain-based EHR structure tested over Ethereum. Through the synergy of cryptography and blockchain, our vision aims for a future where healthcare data is decentralized and impenetrable, providing individuals and healthcare providers with tools to enhance data authority and work without any middleware or third parties, thus directly linking doctors and patients. This seamless connection between doctors and patients offers a promising vision for the future of healthcare information management.