Optimizing Blockchain Integration for Secure and Scalable Internet of Medical Things in Healthcare Applications

Abstract

The integration of Blockchain technology with the Internet of Medical Things (IoMT) presents transformative potential for healthcare, enhancing data security, privacy, and transparency. As IoMT devices collect and transmit sensitive health data, ensuring privacy and preventing unauthorized access become critical concerns. Blockchain offers a decentralized, immutable ledger that can address these challenges by providing secure transaction recording and audit trails. However, limitations related to scalability and efficiency remain obstacles to broad adoption. This research explores various optimization strategies such as consensus algorithm improvements (e.g., Proof of Stake over Proof of Work), hybrid Blockchain models, and off-chain storage to enhance performance in IoMT environments. Lightweight cryptographic protocols are also proposed to reduce device overhead. Through simulations and real-world case studies, we evaluate these strategies in terms of latency, energy efficiency, security, and compliance. Results indicate that Blockchain, when optimized, significantly enhances trust, interoperability, and usability in healthcare IoMT applications.