Abstract

Rapid Response (QR) codes have emerged as a useful weapon in the battle against fake products, which are a significant issue for several businesses. By combining blockchain technology with QR codes, manufacturers and consumers can get a dependable way to verify products. Every genuine goods, in accordance with this system, is assigned a unique QR code that links to a blockchain-based database. The blockchain serves as a decentralised, immutable ledger, guaranteeing the accuracy and transparency of product information. The system reads the relevant data from the blockchain and compares it with the data included in the QR code when a customer scans it with the right scanner or smartphone app.Secure storage and retrieval of product details, such as manufacture data, serial numbers, and other pertinent information, are made possible by this system. As blockchain technology is unchangeable, any effort to alter or duplicate the product's information would result in immediately apparent flaws. The technology prompts users to enter the unique code or authentication key that corresponds with a scanned QR code. subsequently, there is a cross-reference between this code and the blockchain database records. The system verifies the legitimacy of the product if the code entered matches the data that is currently on file. The consumer is informed that the goods could be fake, though, if the code is not present in the database. Manufacturers and merchants may give customers a dependable way to confirm the validity of their transactions by putting this QR code-based system into place. This boosts customer trust while guarding against the negative impacts of counterfeiting and safeguarding income streams and brand reputation.