Blockchain for EHR: an off-chain based approach
Anshika Gupta, Rhea Rodrigues, Ankita Harishchandra Tripathi, Reuben Coutinho, Joanne Gomes · 2022 IEEE Region 10 Symposium (TENSYMP) · 2022
Electronic health records (EHR) are digital versions of the traditional paper-based medical records. Blockchain is a type of distributed database that can be updated and is shared across multiple computers. The existing EHRs suffer from data manipulation, delayed communication, and trustless cooperation in data collection, storage, and distribution, making it arduous to achieve the ACID principles- atomicity, consistency, integrity and durability. The project proposes a blockchain-based mobile app with an integrated wallet for performing transactions to store and retrieve data on the blockchain network. The project demonstrates the use of a secondary off-chain system using IPFS. Further, the project observes integration of role-based access control for the entities that interact with the contract having the hospital as the default admin. The project finds application at sectors requiring intense levels of data privacy and integrity like healthcare, finance, public records, etc.