Rahees Ur Rehman, and Gurjit Singh Bhathal. “Design and Implementation of a Secure Interoperable EHR System Using Ethereum, Hyperledger Fabric, and Decentralized IPFS Storage”. International Journal of Computer Sciences and Engineering, vol. 13, no. 11, Nov. 2025, pp. 29-36, doi:10.26438/ijcse/v13i11.2936.