Medical health data privacy preservation using smart contract

This paper describes a blockchain-based privacy preservation scheme for medical health records. IoT, e-health, and cloud-based hospital management systems have all become important components of our healthcare system. Hospital patient data is extremely sensitive and preserving patient data privacy appears to be difficult. The current method for data storage is to use a cloud storage system. All of this is done through a centralized system, and some management people control everything, which increases the risk of a data breach. We propose a smart contract-based blockchain architecture for the privacy of medical health data. The key features of blockchain are immutability and user confidentiality. We use IoT applications to take advantage of blockchain technology and eliminate its disadvantages, such as low throughput, high overhead, and latency. To that end, we’re clustering the BC miners and sending data to the nearest patient cluster with various keywords and multi-functionality, it supports secure data management.