HealthGuard: A Blockchain-Based Framework for Secure EHR Management
Vandit Jaiswal, Roshan Singh, B V Srinivas, S. Manoj Kumar · 2025
Traditional Electronic Health Record (EHR) systems experience centralized vulnerabilities which explain how healthcare data breaches reach about 45% of cases. Operability requirements reveal patient data to multiple entities which creates breakable data structures that compromise security. Blockchain technology gives patients an alternative system that operates with decentralized security while maintaining transparency. HealthGuard exists to provide medical patients complete control over their healthcare records with built-in privacy features and educational decision solutions. The authentication security comes from Ethereum combined with Metamask services while decentralized storage solutions create revolutionary methods to protect sensitive information. The system operates more efficiently because smart contracts simplify connections between patients and their healthcare providers including lab technicians. Healthcare facilities can achieve advanced data protection through blockchain storage which improves patient care interconnectivity with individualized care plans. The combination of smart contracts together with decentralized applications helps reduce healthcare administration costs which leads to efficiency growth. Through blockchain technology the healthcare system develops better security and changes toward patient-centered care which enables people to manage their health information actively.