BLOCKCHAIN-ENABLED SECURE SMART HEALTHCARE ARCHITECTURE FOR DIGITAL HEALTH SYSTEMS IN PAKISTAN

Abstract

The increasing digitalization of healthcare systems has introduced significant challenges related to data security, interoperability, privacy preservation, and trust among distributed stakeholders. In countries such as Pakistan, these challenges are intensified by fragmented healthcare infrastructure, weak data governance mechanisms, and limited integration between healthcare providers. This study proposes a blockchain-enabled secure smart healthcare architecture designed to enhance data integrity, transparency, and interoperability within digital health systems in Pakistan. The proposed framework integrates permissioned blockchain technology with smart healthcare components, including electronic health records (EHRs), Internet of Medical Things (IoMT) devices, cloud-based systems, and hospital information systems. Smart contracts were employed to automate access control, patient consent management, and secure data exchange among healthcare stakeholders. The system was evaluated through simulation-based performance analysis, focusing on transaction throughput, latency, scalability, and security resilience. The findings demonstrate that the blockchain-based architecture significantly improves system performance compared to traditional centralized healthcare systems, with higher transaction throughput, reduced latency, enhanced data integrity, and improved resistance to unauthorized access. The results further indicate that blockchain integration strengthens trust, transparency, and interoperability across healthcare institutions. This study contributes to the development of a scalable and secure digital health infrastructure tailored to the needs of Pakistan and provides a foundational model for future adoption of blockchain technology in healthcare systems.