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Healthcare institutions around the world become an organised and user-centred structures. Managing vast volumes of data, such as IoT device data or medical records of each person, however, contributes to an increase in human resources and security threats. To solve these challenges, healthcare IoT increases the quality of patient care and lowers costs by efficiently allocating medical services. Via blockchain technology, we have a safety mechanism for healthcare data through creating the SHA256 hash algorithm of each data such that every modification or alteration of data confirmed with improved simulation results that due to blockchain methodology give the security. Our proposed algorithm based on SHA256 hash algorithm to every block which are verified by every node, data cannot be altered by nefarious source. In this research work, we proposed a blockchain-based model with consensus …