Ethereum Blockchain-Based Medicine Supply Chain

The medicine supply chain is a process of transferring medicine across various stakeholders. The manual process of the supply chain needs help to locate the source of the medicine accurately. In addition, many people consume the medicine without validating it, which generates a risk for patients. To address this, in this paper, we have designed an Ethereum-based smart contract for tracking medicine in real-time accurately. We have also developed a smart contract to verify the medicine and achieve medicine compliance. Initially, the BCN verifies the credentials of each stakeholder and adds them to the BCN. Afterward, Admin can assign the roles to each stakeholder. The supplier can initiate collecting raw forms and send them to the manufacturer with the raw form ID. The manufacturer can verify the raw forms of medicine with its ID and manufacture the medicine accordingly. Further, this medicine verifies by the medical authority nodes and added medicine in the BCN. Later on, this medicine was transferred across other stakeholders, and locate the source of the medicine accurately. We have also validated our smart contract with vulnerability analysis. We have used the Oyente tool to verify our smart contract validity. Thus, the proposed scheme achieves real-time traceability, transparency, immutability, and medicine compliance.