OmniPHR: A distributed architecture model to integrate personal health records.

•We propose OmniPHR, a P22/Blockchain based architecture for Personal Health Records.•The proposal allows a unified view, integrating patients’ scattered health records.•OmniPHR promotes interoperability among different providers to access health record.•The evaluation showed the feasibility of OmniPHR in terms of elasticity/scalability.•The scientific contribution is a proposal of a distributed and interoperable PHR.