Blockchain-based Secure Health Record Management

The increasing digitization of healthcare systems has led to the widespread adoption of electronic health records (EHRs), raising concerns about data security, privacy, and interop-erability. This paper proposes a blockchain-based secure health record management system designed to ensure the confidentiality, integrity, and accessibility of patient data. By lever-aging the decentralized and tamper-resistant nature of blockchain technology, the system enables secure storage and sharing of medical records among authorized stakeholders such as hospitals, doctors, and patients. Smart contracts are utilized to enforce access control policies and automate data-sharing permissions. Additionally, cryptographic techniques are integrated to protect sensitive information from unauthorized access and cyber threats. The proposed framework enhances transparency, reduces the risk of data breaches, and elimi-nates the need for a centralized authority. Experimental analysis demonstrates improved data security and efficient record management compared to traditional systems. This ap-proach offers a reliable and scalable solution for modern healthcare environments.