A Novel Decentralized Product Verification using Blockchain Technology

Abstract

A blockchain is a distributed database that serves as a public ledger of all digital events and transactions executed and shared among participating parties. Consensus from a majority of system participants verifies each transaction in the public ledger, and once recorded, the information cannot be erased. The blockchain contains a verifiable record of every transaction ever made, making it similar to a cookie jar in a crowded marketplace compared to a secluded location. The product verification system utilizes the Ethereum blockchain to deploy smart contracts in blocks. There are two users: manufacturers and customers. Manufacturers can save product information, including product price, name, manufacturing date, location, and expiry date, in the blockchain as a smart contract. This information can be saved in QR codes and NFC tags that act as digital invoices for the product. Customers can confirm product details by scanning the QR code or NFC tag. Smart contracts are built using Solidity, and the deployment is completed using the Truffle blockchain deployment tool. Firebase handles authentication capabilities, allowing analytics on the number of authenticated customers.