ABSTRACT In centralized systems prone to data breaches and single points of failure, issues about security, privacy, scalability, and real‐time sharing of electronic health records (EHRs) have arisen in the context of healthcare digitization. To tackle these problems, this paper proposes blockEHR, a decentralized EHR sharing system that uses blockchain technology and protects users' privacy. To communicate health data securely in real time, the suggested method employs Internet of Medical Things (IoMT) devices, edge computing, and a permissioned private Ethereum blockchain. Data collected by IoMT sensors is confirmed at the edge by means of digital signatures, identity cross‐referencing, and GPS‐based verification. Data on blockchains is protected by smart contracts and access controls based on roles. Both AES‐256 encryption and SHA‐256 hashing ensure the security of the data. In real time, the system can handle 1850 records/second with minimal latency and great throughput, according to the experiments. The findings demonstrate that blockEHR maintains patient privacy and allows practical healthcare applications while being a secure, scalable and effective decentralized method for managing electronic health records.
Rajakarthik et al. (Thu,) studied this question.