Looking for react Web3 blockchain project ideas? Our library of 89+ Web3 hackathon projects offers real-world implementations, code samples, and detailed case studies.
Nyaya is a blockchain-based FIR system ensuring transparency and security. Users file anonymous complaints via World ID, stored immutably on the blockchain. Police verify cases, and if valid, register the FIR. Corruption-proof, the system guarantees tamper-free records.
A fun & competitive step tracker game where you can walk, use items or bribe other players to win.
A payment system enabling EOAs and smart accounts to make ERC20 payments using a typedData signature, with flexible gas options and operator-executed transactions. It’s adaptable for any use case, including NFT exchanges, and more.
Increase crypto adoption by creating a CrossChain Identity for crypto donations. I'll use EAS to collect identities. Users can generate wallets (EVM, BTC, Solana, TON) and save their profiles. The profile can receive tips on my page and will also be public for other dapps.
A crypto-based microloan platform allows friends to lend and borrow small amounts of cryptocurrency securely and transparently. Using blockchain technology, it ensures trust, transparency, and automation.
Mobile-optimized decentralized marketplace allowing users to browse, buy, and sell items
RepoRewards is a cool blockchain-based platform designed to make rewarding open-source contributions on GitHub super easy and transparent.
We aim to deploy a Layer 2 blockchain using the OP Stack to enhance scalability and user experience. It will support decentralized applications (dApps) with seamless login via WorldID, fostering a robust ecosystem that simplifies blockchain access and encourages innovation.
Cookie Jar is a smart contract that contains a small amount of tokens in it that anyone in a DAO can withdraw from. The withdrawer must leave a note saying what the tokens are going to be used for, and DAO members can upvote/downvote those notes.
Seamlessly authenticate, verify your unique identity, and delve into comprehensive blockchain data with user-friendly tools and intuitive interfaces
An L3 blockchain on Base Mainnet built using OP Stack and op-reth for the consensus layer while allowing creators to make merit-based contributions while helping project owners.
loyalty rewards and e commerce via web3 for baseball stadium and a professional baseball team