Blockchain as a Service for Electronic Health Records
Suraj Gupta, Frédéric Lang, Umar Ozeer, Gwen Salaün · 2025
EHRs or Electronic Health Records are digital medical records regarding the health of patients. They are sensitive in nature and their storage and management needs to adhere to strict guidelines. Multiple applications depend on this data for efficiently managing their healthcare requirements. This work proposes FaSTr, a solution based on blockchain that enables Fast, Secure and Transparent communication and collaboration between applications, by providing services. These services are accessible via defined protocols, such as APIs. FaSTr exposes secure API endpoints to provide functionality to manage and share EHRs. This is achieved with the help of several novel ideas: A compatibility layer that improves interoperability, an API server that exposes important endpoints for services and a private network of nodes for each service resulting in high availability and robustness. Finally, performance evaluations demonstrate the real-world usability and scalability of FaSTr.