19+ React NFT Web3 Hackathon Projects

Open sourcing DeSci R&D pipelines in applied chemistry via an experimental data marketplace and tokenized reactions

Kosma is a decentralized social media platform that empowers content creators with true ownership through NFTs, ad-free privacy, and innovative monetization using background soft mining—all built on blockchain to ensure user data remains private and secure.

A decentralized NFT real estate marketplace on Ethereum and Polygon. Users can buy, sell, and transfer property tokens with metadata on IPFS. Features escrow services, multi-party interactions (buyers, sellers, lenders), and low gas fees on Polygon.

Salus is the first Web3 protocol that incentivizes health data sharing for discounts on medical and term insurance. By sharing data from apps like Apple Health, users can earn cash rewards and premium reductions.

Terraflow is a DeFi AgriTech platform that tokenizes farmland and enables consumers to stake funds to support local farmers. Using blockchain, smart contracts, and NFTs, users can invest in fractional ownership, receive rewards, and help farmers access sustainable funding.

Alpha Scorpion is a multi-chain NFT project powered by LayerZero, offering seamless cross-chain minting, IP management, and immersive storytelling. Mint on Holesky, protect IP on Story Protocol, and unlock interactive experiences across blockchain networks. #NFT #Web3 #CrossChain

HonorDAO distributes ‘Honor Token’ for every good transaction you do, and ‘Dishonor Token’ if you do a bad transaction. It allows users on Ethereum to rate the integrity of a transaction on whether the counter party held up their side of the deal.

connect via ens by bumping phones with verifiable irl connections

We built the first DEX on Essential Blockchain, powered by a declarative framework. Users can seamlessly add/remove liquidity, swap tokens, and earn LP tokens. Plus, we open-sourced a JS framework to make Essential development accessible to all developers.

We built a React app that connects to user authentication via Alchemy’s Accounts UI Widget. We're creating a composite Ethereum token of two crypto carbon credits on Celo using Toucan Protocol. A subgraph listens to wallet events and broadcasts via XMTP to a Telegram bot.

TerraTracker: Harnessing blockchain and AI for hyper-local disaster predictions. Empower communities with real-time insights, engage users through staking rewards, and support relief efforts with a portion of profits. Predict. Prepare. Protect.

An educational app for learning Web3 protocols with interactive lessons, on-chain actions, and attestations. Users earn XP, complete quizzes, and validate achievements on Polygon while seamlessly engaging with blockchain tech like Coinbase AA and Sign Attestation Protocol.