PHARMACHAIN: A BLOCKCHAIN-BASED PHARMACEUTICAL SUPPLY CHAIN MANAGEMENT SYSTEM WITH QR VERIFICATION AND MOBILE AUTHENTICATION
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The World Health Organization estimates that counterfeit medications cause almost 200,000 deaths annually, posing a major threat to public health globally. It is challenging to confirm drug authenticity at any stage of the distribution process because traditional supply chain systems are opaque and vulnerable to data manipulation. This paper introduces PharmaChain, a decentralized system for managing the pharmaceutical supply chain. It uses Ethereum smart contracts along with an off-chain PostgreSQL database to ensure complete drug traceability. The system has a role-based access control model. This is enforced both on-chain through Solidity modifiers and off-chain using JWT authenticated API routes. It supports four roles: Manufacturer, Distributor, Wholesaler, and Admin. The four stages of a drug's lifecycle are manufacturing, distribution, wholesale, and sale. Every change is permanently documented on the blockchain. An auto-generated QR hash system allows consumers to check drug authenticity through a mobile app based on React. This app retrieves real time on-chain verification results by scanning QR codes. Next.js 16 and React 19 are used in the development of the web application. Ethers.js 6 is used to integrate MetaMask for wallet based authentication. Experimental results show that the system effectively prevents unauthorized stage transitions, detects expired and rejected drugs, and provides a complete ownership history for any registered pharmaceutical product.
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Dhumal, O., Jagtap, S., Nagare, R. & Khairnar, A. (2026). PharmaChain: A Blockchain-Based Pharmaceutical Supply Chain Management System with QR Verification and Mobile Authentication. International Journal of Science, Strategic Management and Technology, 02(04). https://doi.org/10.55041/ijsmt.v2i4.186
Dhumal, Om, et al.. "PharmaChain: A Blockchain-Based Pharmaceutical Supply Chain Management System with QR Verification and Mobile Authentication." International Journal of Science, Strategic Management and Technology, vol. 02, no. 04, 2026, pp. . doi:https://doi.org/10.55041/ijsmt.v2i4.186.
Dhumal, Om,Siddhant Jagtap,Rohan Nagare, and Ankush Khairnar. "PharmaChain: A Blockchain-Based Pharmaceutical Supply Chain Management System with QR Verification and Mobile Authentication." International Journal of Science, Strategic Management and Technology 02, no. 04 (2026). https://doi.org/https://doi.org/10.55041/ijsmt.v2i4.186.
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