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Abstract The integration of the Internet of Things (IoT) with blockchain technology has enabled a significant digital transformation in the areas of E‐health, supply chain, financial services, smart grid, and automated contracts. Many E‐health organizations take advantage of the game‐changing power of blockchain and IoT to improve patient outcomes and optimize internal operational activities. In particular, it proposes a decentralized and evolutive way to model and acknowledge trust and data validity in a peer‐to‐peer network. Blockchain promises transparent and secure systems to provide new business solutions, especially when combined with smart contracts. In this paper, we provide a comprehensive survey of the literature involving blockchain technology applied to E‐health. First, we present a brief background on blockchain and its fundamentals. Second, we review the opportunities and challenges of blockchain in the context of E‐health. We then discuss popular consensus algorithms and smart contracts in blockchain in conjunction with E‐health. Finally, blockchain platforms are evaluated for their suitability in the realm of IoT‐based E‐health, including electronic health records, electronic management records, and personal health records, from the perspective of remote patient monitoring.
Badri et al. (Tue,) studied this question.