A medical implant can comprise a physical structure configured to secure the medical implant within a body of a patient, a proximity communication component physically coupled to the physical structure, and a memory operatively coupled to the proximity communication component. The memory can store a private key, wherein the memory is configured to provide the private key through the proximity communication component to an external device for enabling the external device to access one or more electronic medical records associated with a patient that is implanted with the implant from a distributed blockchain ledger of electronic medical records.