A Review on Blockchain-Based Electronic Health Record (EHR) System for Secure Data Storage

Blockchain technology ensures an efficient and cost-effective solution that strengthens different industrial sectors and procedures to ascertain proper identification. For the health system, which has numerous stakeholders, a decentralized management system is required. Blockchain technology has the potential to be that decentralized health management system in which all parties involved have controlled access to the same health records without the need for a centralized authority. Because the information cannot be corrupted once it has been saved to the blockchain, the unchangeable nature of the blockchain significantly improves the security and privacy of the health information contained on it. The paper discusses the blockchain-based Electronic Health Record (EHR) system for secure data storage through a detailed review enlisting the main contribution and limitations of blockchain-based EHR systems. We also check the various EHR schemes on the scale of security and privacy attacks and present the benefits of using blockchain in EHR.