Blockchain across Oracle

Multiple participants and permissions

As the healthcare system involves a plethora of different actors, identity management and access to data needs to be implemented by design. Using Hyperledger Composer, the MedicalChain platform implements a dynamic system that identifies actors and gives them the appropriate scope over a health record, while at the same time taking the patient's permission into account.

There are three main participants in the healthcare system:

• A practitioner, for example, can read or write on permissioned records (EHRs), or they can request permission for other practitioners/institutions to have access.   
• A patient can read their EHR, giving or revoking the permission of a practitioner or institution to read or ...