67+ React Web3 Hackathon Projects

A DApp you can use to be married on-chain. Use it during a wedding ceremony, interact with your guests, and get an AES attestion as Proof-of-Marriage.

Data4.builders provides massive user behavior data for developers without sacrificing users’ privacy. We are building a composable, universal user profile data layer that is high efficiency, privacy-preserving, and fits web3 paradigm.

Integrating PETALS, a system for efficient fine-tuning or inference of large AI models, with Gnosis Chain/Polygon/ZkSync or Filecoin for improved incentives, privacy, and security. Blockchain-based incentives, zk-proofs for data privacy, smart contracts for security.

NoxFi, an innovative on-chain private double auction DEX, uses ZKP to enable private, large-scale trades with zero market impact. Unlike existing DEXs, NoxFi minimizes slippage, prevents front-running, and is ideal for low liquidity pools and institutional investors.

ChampDuel1999 is a strategic, turn-based blockchain game where players battle using their NFTs. Players deposit and lock their NFTs to enter the game, with the ultimate victor claiming all NFTs.

In-browser smart contract accounts generation with Lit protocol social logins, where gas is subsidized by dApps

Batchminting of nft where user makes multiple transactions signing only once

SwapChat: A smart DeFi app that uses GPT-based AI for seamless crypto swaps. Connect MetaMask, chat about your trading intent, confirm, and trade. Powered by OpenAI, 1inch Fusion SDK, Metamask and React.

A social wallet that allows users to log-in with well-known providers (i.e. Google, Github, etc) and sign transactions with the credentials from these providers.

Voulez-Vous Auth is a single-sign on solution for organisations by using account abstraction and zkProofs

Humane AI is crowdsourced dataset powering future AGI for humanity.

Attestation of originality of source code using EAS and IPFS