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@article{191731,
        author = {Kumari Kanchan Priya},
        title = {Blockchain-Based Secure Patient Data Management in Healthcare Systems},
        journal = {International Journal of Innovative Research in Technology},
        year = {},
        volume = {12},
        number = {no},
        pages = {78-80},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=191731},
        abstract = {The rapid digitization of healthcare systems has increased the demand for secure, transparent, and efficient patient data management solutions. Traditional electronic health record (EHR) systems continue to face challenges such as data breaches, unauthorized access, lack of patient control, and poor interoperability among heterogeneous platforms. Blockchain technology, with its decentralized architecture, immutability, distributed ledger features, and cryptographic assurances, has emerged as a potential solution for overcoming these limitations. This paper explores a privacy-preserving, scalable, and practical blockchain-based framework designed specifically for secure patient data management in healthcare settings. The study reviews current challenges, evaluates recent innovations, and proposes a hybrid blockchain architecture integrating permissioned ledgers, off-chain encrypted repositories, smart contracts, and HL7-FHIR interoperability mechanisms. A comprehensive discussion is presented on security threats, governance frameworks, metadata privacy, key management complexities, and regulatory compliance challenges including HIPAA and GDPR. Furthermore, the paper outlines an evaluation strategy supported by performance indicators such as latency, throughput, access control efficiency, and metadata leakage analysis. Future research directions highlight the integration of artificial intelligence, verifiable credentials, zero-knowledge proofs, and national-level digital health networks.},
        keywords = {Blockchain, Electronic Health Records, Healthcare Security, Interoperability, Patient Privacy, Smart Contracts},
        month = {},
        }