Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

@article{189585,
        author = {D K Kalai Vani and K Gopal Ram and C Brintha and Rakhesh I P},
        title = {Blockchain for Healthcare: Secure, Transparent, and Interoperable Health Information Systems},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {12},
        number = {7},
        pages = {6348-6355},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=189585},
        abstract = {Blockchain has become a game-changing technology that can address important issues in healthcare, such as security, interoperability, and data privacy. Conventional healthcare systems rely on centralised architectures that are vulnerable to fragmented data storage, inefficiencies, and cyberattacks. New models for patient data ownership, secure data exchange, supply chain integrity, and reliable healthcare procedures are made possible by blockchain's decentralised, cryptographically secure, and tamper-resistant characteristics. This paper offers a thorough examination of blockchain applications in the healthcare industry, including data management models, consensus processes, architectural frameworks, and privacy-preserving strategies. Critical analysis is done on use cases such insurance processing, telemedicine, medical IoT, pharmaceutical supply chains, clinical trial management, and electronic health records (EHRs). There is discussion of issues like integration obstacles, scalability, regulatory compliance, and quantum-security threats. Future research directions including hybrid architectures, AI-blockchain integration, and global health data interoperability are discussed in the paper's conclusion.},
        keywords = {Blockchain, healthcare, EHR, interoperability, decentralization, privacy, smart contracts.},
        month = {December},
        }