Design And Development Of A Blockchain-Enabled Secure Electronic Health Record Sharing Framework Using Distributed Ledger Technology

Abstract

Healthcare data security has become a major concern in modern medical information systems due to the rapid growth of digital health records, cloud-based storage, and interconnected hospital networks. Conventional Electronic Health Record (EHR) systems suffer from limitations such as centralized data storage, unauthorized access, poor interoperability, data tampering, and insufficient patient privacy protection. Existing studies on healthcare information management mainly focus on centralized databases and traditional cryptographic mechanisms, which often fail to provide complete confidentiality, integrity, transparency, and trustworthiness during medical data exchange among hospitals, laboratories, insurance agencies, and healthcare professionals. Furthermore, cyberattacks, ransomware threats, and unauthorized modification of patient records create significant risks to healthcare infrastructure and patient safety.

To overcome these challenges, this research proposes the Design and Development of a Blockchain-Enabled Secure Electronic Health Record Sharing Framework Using Distributed Ledger Technology. The proposed system utilizes blockchain technology integrated with distributed ledger architecture, cryptographic hashing, smart contracts, and decentralized access control mechanisms to ensure secure and transparent medical record sharing. The framework is designed to provide confidentiality for patient medical records, maintain patient information secrecy, and strengthen trust between doctors and patients by protecting sensitive healthcare data from unauthorized disclosure and manipulation. Advanced encryption algorithms and consensus protocols are incorporated to improve authentication, secure data transactions, and immutable storage of medical information across distributed healthcare nodes.

The proposed model is expected to achieve enhanced healthcare data security, tamper-resistant medical record management, efficient interoperability among healthcare institutions, and improved patient-centric privacy control. Performance analysis parameters such as transaction security, access authentication accuracy, data integrity rate, latency, scalability, and storage efficiency are considered for system evaluation. Experimental analysis is expected to demonstrate significant improvements in confidentiality protection, reduction in unauthorized access risks, secure real-time health record sharing, and reliable distributed data management compared to conventional healthcare database systems. The proposed blockchain-enabled framework can provide a scalable, transparent, and trustworthy solution for next-generation smart healthcare ecosystems.