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  • Patent number: 11558178
    Abstract: Systems, methods, and computer-readable storage media for receiving, from an issuer, an electronic prescription for a patient, then fulfilling that prescription using a blockchain/distributed ledger verification system. The system receives multiple public keys, combines them, then performs a hash function (or other encryption) on that combination. The resulting output is then transmitted to a pharmacy for prescription fulfillment.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: January 17, 2023
    Assignee: Walmart Apollo, LLC
    Inventors: John J. O'brien, David M. Nelms