A Blockchain-Driven Framework for Auditable and Tamper-Proof PHR Data Management

Abstract

This paper proposes a permissioned blockchain framework to enable secure sharing of electronic medical records between healthcare institutions. Encryption mechanisms grant access control to authorized users while ensuring data integrity. The system leverages blockchain properties like decentralization and immutability to mitigate security risks of cloud-based storage. A detailed architecture illustrates member authentication, transaction protocols, and interconnected blockchain components. By decentralizing medical data, the system aims to facilitate trustless sharing and prevent unauthorized data modification. We can create a distributed database that offers functions such as data storage, backup, and restore for medical information. This involves transmitting and saving medical information in each existing base medical institution. This design aims to enable secure data sharing using an extensible and lightweight blockchain, ensuring privacy by comparing it to shared data pools and blockchain networks. Through this approach, the Blockchain Server in each participating base of the Blockchain Network can function as an interface for utilizing medical information, in addition to storing medical data securely.