Abstract

As IoT devices become increasingly ubiquitous in healthcare settings, the necessity for effective cybersecurity safeguards to secure patient data has risen. This article describes a blockchain-based architecture for protecting private and sensitive medical data inside IoT healthcare networks. We tackle the tough task of preventing hackers from obtaining massive volumes of confidential healthcare data while keeping the system operational. Despite the technology's inherent scaling issues, our research focuses on using blockchain to safeguard IoT healthcare systems from unauthorised access and to retain accurate and secure data. The blockchain network's purpose is to ensure the integrity of the ledger's data throughout its lifespan while also fostering more efficient corporate operations and enhanced security through the use of smart contracts. Only keeping transaction hashes in the storage system alleviates scalability problems, and the user interface includes strong authentication methods to limit who has access to the data. The proposed methodological algorithm, "Medical Data Management," is meant to handle healthcare data on the blockchain in accordance with ethical and regulatory criteria. As extra tools for handling safe data, we propose the "Advanced Patient Service Smart Contract" and the "Advanced Healthcare Smart Contract with Encryption and Authentication". This has the potential to improve patient privacy, data integrity, and scalability. Extensive testing proves the viability of the proposed architecture for IoT healthcare security by demonstrating the system's ability to satisfy users, safeguard against common cyber threats, and fulfil real-time application demands.