Privacy preservation of EHR using blockchain

Abstract

An electronic health record (EHR) stores health related data of a patient digitally. These days, this information is tampered with, leading to numerous medical mishaps. Privacy is also violated when these data are accessed by unidentified individuals. Blockchain, which offers a decentralized, immutable, and verifiable ledger, has recently gained popularity and is employed in a variety of businesses. Using off-chain storage of the record, this technology architecture also addresses scalability challenges and allows for the secure storage of EHR with granular authentication tokens. Therefore, the data and doctor's diagnosis cannot be changed or withdrawn in order to avoid medical conflicts. Secondly, there is a problem with insurance claims involving privacy security. Thus, a way is shown here in which security with regard to the patient's illness is likewise resolved. Thirdly, secure transfer of medical records to non-registered parties.