Hi I am a Software Engineering Student with a good foundation in blockchain and web development

github

Huzaifa Aslam  • Peerlist

<h3>Project Description</h3>Overview A decentralized food marketplace built using the MERN stack, bridging traditional e-commerce with Web3 security and decentralization.Key Technical Achievements<ul><li>Blockchain Settlement: Deployed and integrated Solidity smart contracts on the Base Sepolia Testnet using Ethers.js to handle secure, automated food orders.</li><li>Immutable Receipts (IPFS): Every transaction generates a digital receipt stored on IPFS. The unique IPFS Hash (CID) serves as a permanent, decentralized proof of purchase stored alongside the order data.</li><li>Cryptographic Security: Implemented a custom Node.js middleware for HMAC-SHA256 signature verification. This ensures the backend only accepts verified, authentic payment updates from Alchemy webhooks.</li><li>System Architecture: Designed a hybrid sync-engine that ensures data consistency between a MongoDB catalog and real-time on-chain events. Development Tools &amp; Environment<ul><li>Smart Contract Dev: Hardhat, Solidity</li><li>Provider: Alchemy (Webhooks &amp; RPC)</li><li>Frontend: React.js, Tailwind CSS</li><li>Backend: Node.js, Express.js</li><li>Database: MongoDB</li><li>Wallet Interaction: MetaMask</li></ul></li></ul>