Design, Implementation, and Experimental Evaluation of a Blockchain-Based Electronic Health Records System for Secure Data Sharing among Healthcare Providers

Abstract

 The rapid digitalization of healthcare has accelerated the adoption of Electronic Health Records (EHRs) to improve clinical efficiency, continuity of care, and data-driven decision-making. Hence the objective of this study was to design, implement, and evaluate a Blockchain Technology-Based Electronic Health Records System for secure data sharing among healthcare providers. Using the Design Science Research Methodology (DSRM). Results showed transaction confirmation times between 1.9 and 3.4 seconds and a peak throughput of 42 transactions per second. Compared with a traditional centralized EHR model, the system achieved a 34% reduction in data validation time and a 28% improvement in cross-institutional data retrieval efficiency. Security testing recorded a 98.7% detection rate of simulated tampering attempts, while usability assessment produced a System Usability Scale score of 82%. The findings demonstrate that blockchain technology can significantly enhance security, transparency, interoperability, and trust in distributed healthcare ecosystems through an experimentally validated architecture