Abstract: An Electronic Health Record (EHR) data blockchain system configured to allow multiple entities (e.g., pharmacy industry entities and healthcare providers that can act as data, service, product and service providers, and consumers) to connect to an EHR patient transaction blockchain (e.g., EHR-DATA-BC) and an EHR Data Patient Portal (e.g., EHR-Data-PP) to provide a centralized location for messages and subsequent edits to ensure uniform message data is presented. The EHR data blockchain system can include an EHR Data API, an EHR patient transaction blockchain API, and an EHR patient transaction blockchain. The EHR data blockchain system can provide workflow on the blockchain that can utilize smart contracts to define workflow processes, expected outcomes, and financial costs. When a prescription transaction is complete, it will result in the settlement of each of the smart contracts that were added to the prescription workflow.