Medical Record Aggregation Using Blockchain Technology

Abstract

Healthcare domain and a reliable method to store every patient’s data record securely by keeping protection of privacy in mind are considered to be one of the major concerns in the field of study and implementation. An efficient decentralized system for control accessed interoperability of transactions or data between the owner (patient) and the healthcare practitioner is required. This would also ensure a complete and accurate medical history of the patient and allow the full use of it by the health organization as well. The rise in blockchain technology has enabled to build the needs to bridge the gap between the patient and practitioner to securely store and utilize personal data digitally. This paper is a study on proposed implementations and a scope of those medical health aggregation methods have been discussed along with an idea to improve the existing system. A two-level access-controlled mechanism of the patient’s private medical record and granting the requested access or transfer of ownership properties to the practitioner in any chain of a hospital is proposed. Hence, a decentralized, automatically verifiable, transparent and immutable smart e-healthcare card medical records aggregation system could be designed using the Hyperledger Sawtooth framework built on the blockchain technology platform. Three algorithms are being proposed to ensure an atomic transaction - Proof of Work (PoW), Byzantine Fault Tolerance (BFT) and Asymmetric Cryptography (like RSA) algorithm. The aim is to implement the proposed model and strive towards the scope of betterment in the field of healthcare. The health data is planned to be stored in a format like Electronic Health Records (EHR).