An efficient EHR sharing model using blockchain and decentralised storage technologies

Abstract: Due to issues with respect to security breaches and expensive storage capacity, the secure sharing and maintenance of Electronic Health Records (EHRs) remains a concern within the healthcare industry. To ensure mystery, versatility, and reliability in sharing information, this article gives an successful EHR sharing view based on blockchain and decentralized storage technologies. It includes smart contracts, proxy re-encryption, and a hybrid on-chain/off-chain architecture to the Blockchain-based Secure Access and Sharing (BCAS) system. This strategy integrates Filecoin as a decentralized, incentive-driven storage layer to ensure tough and verifiable data availability, in contrast to conventional IPFS-only solutions. Filecoin and IPFS manages the storage of encrypted medical data, whereas Blockchain handles identity verification, access control, and transaction auditing. Smart contracts ensure the transparency and confidential ownership of health data by automating access tracking and authorization administration. Security testing verified the system’s defenses against common threats like DDoS, spoofing and MITM attacks. When compared to current blockchain-based EHR systems, the performance evaluation demonstrates extraordinary throughput, low computational overhead, and faster recovery. The proposed approach provides an effective, secure, and patient-focused solution for EHR data management and sharing among healthcare centers using Filecoin's decentralized economy with immutability of blockchain. Keywords: InterPlanetary File System (IPFS), Filecoin, Secure Data Sharing, Smart Contracts, Electronic Health Records (EHR), Blockchain Technology. Title: An efficient EHR sharing model using blockchain and decentralised storage technologies Author: Mr. Nitish, Mr. Anuj Kumar Sharma, Mr. Kamal Kumar, Mr. Bharat Kumar, Mr. Kunal Yadav International Journal of Recent Research in Mathematics Computer Science and Information Technology ISSN 2350-1022 Vol. 12, Issue 2, October 2025 - March 2026 Page No: 38-44 Paper Publications Website: www.paperpublications.org Published Date: 21-February-2026 DOI: https://doi.org/10.5281/zenodo.18724447 Paper Download Link (Source) https://www.paperpublications.org/upload/book/An%20efficient%20EHR%20sharing%20model%20using%20blockchain-21022026-6.pdf