International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 13 Issue: 02 | Feb 2026
p-ISSN: 2395-0072
www.irjet.net
COUNTERFEIT PRODUCT IDENTIFICATION SYSTEM USING BLOCKCHAIN Mrs. M. Sushma1, M.Chandu2, M. Naga Harish Babu3, M. Ajay4, P. Praveen 5 1Assistant Professor, Department of IT, TKR College of Engineering and Technology, Telangana, India 2,3,4,5B.Tech Students, Department of IT, TKR College of Engineering and Technology, Telangana, India
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Abstract - The increasing prevalence of counterfeit
verification and displays the complete supply chain history. Furthermore, verify Chain incorporates a Gemini 2.5 Flash– powered AI chatbot to assist customers by answering product-related queries and clarifying supply chain details. This integration not only enhances user interaction but also promotes transparency and consumer confidence. The proposed system, leveraging blockchain’s immutability and AI’s contextual intelligence, offers a scalable and tamperproof solution for mitigating counterfeiting and enhancing supply chain trustworthiness.
products in supply chains poses significant risks to consumers and manufacturers alike. This paper presents verify Chain, a block chain-powered product verification system designed to ensure authenticity and traceability throughout the supply chain The system allows manufacturers to register products with unique QR codes and SHA-256 hash keys, which are recorded in a blockchain ledger as immutable blocks. Distributors and retailers verify and transfer product ownership via hash based authentication, maintaining a tamper-proof supply chain history. Customers can scan the product QR code to verify authenticity and access detailed supply chain information, augmented by an AI-driven assistant that answers product-related queries. Verify Chain leverages the transparency and immutability of blockchain, combined with real-time AI guidance, to combat counterfeiting effectively and enhance consumer trust. Experimental deployment demonstrates accurate product verification and real-time traceability across multiple supply chain stages
1.1 Challenges of Counterfeit Products Counterfeit products are a major issue affecting industries worldwide, causing enormous financial losses and posing health and safety risks, especially in sectors like pharmaceuticals and electronics. Traditional methods of verifying authenticity, such as barcodes and serial numbers, are often easy to forge, while manual inspections are timeconsuming and prone to error. Tracking counterfeit items throughout the supply chain is extremely difficult due to a lack of transparency among suppliers. Consumers often cannot differentiate between real and fake products, which reduces trust and damages brand value. Companies spend significant resources on anti-counterfeiting campaigns, while governments and regulatory bodies struggle to enforce product authenticity. E-commerce platforms also face challenges detecting fake products online, and cross-border trade adds complexity to tracking genuine goods. These challenges highlight the urgent need for a secure, reliable, and transparent system to ensure product authenticity. Blockchain technology emerges as a potential solution, offering a way to efficiently overcome these issues and protect both businesses and consumers.
Key words : Block chain, Product Verification, Counterfeit Detection, Supply Chain Traceability, QR Code Authentication
1. INTRODUCTION In recent years, the rapid growth of global trade and ecommerce has significantly increased the circulation of counterfeit products across multiple industries. These fake products not only damage the reputation and revenue of legitimate manufacturers but also pose serious risks to consumer safety. Traditional product tracking systems that rely on centralized databases are often vulnerable to manipulation, data loss, and lack of transparency. Hence, there is a pressing need for a secure, decentralized, and reliable mechanism to verify product authenticity throughout its lifecycle. To address these challenges, this work proposes verify Chain, a block chain-based system that integrates cryptographic hashing, QR code verification, and artificial intelligence for real time product authentication. The system enables manufacturers to register products with a unique SHA-256 hash and QR code, forming the genesis block in a transparent supply chain ledger. Distributors and retailers further validate and transfer ownership through verified blockchain transactions, ensuring end-to-end traceability. At the consumer level, a QR code scan provides authenticity
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Fig -1: Blockchain verification for product authenticity
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