69+ Solidity PRIVACY Web3 Hackathon Projects

AI wearable device that always listens and stores the proof of important conversation on-chain. Accompanied by a mobile app that helps to manage and visualize interactions.

Airdrop tokens to the verified stock owners using zero-knowledge proofs. Bridge traditional finance and crypto while preserving privacy. Prove stock ownership without revealing details, receive tokens on-chain. Empower stockholders with blockchain benefits confidentially.

A Telegram mini-app for Blackjack, with on chain game play and encrypted data.

zk-express is a system based on vLayer that automatically generates zero-knowledge proofs for emails and verifies them on-chain. It enables developers to quickly implement decentralized verification of web2 data in web3 applications.

FHE-enabled privacy preserving Uniswap v4 limit order hook, for top tier traders wanting to take advantage of the power of Uni V4 without revealing their secrets.

ZiBet is a next-gen Web3 gaming and betting platform built on the robust foundation of Zircuit. It seamlessly blends competitive games with secure betting mechanisms, offering a fair, engaging, and entertaining experience.

Lotto is a community-driven lottery built on Otto DAO, leveraging VRF, Automation, and CCIP. It enables lotteries where part of the prize funds public goods or chosen initiatives supported by Nouns DAO. Transparency and impact in every draw.

Tick3t: Seamless, privacy-first event ticketing for Web3. Gasless NFT tickets for crypto users, instant smart wallets for newcomers via Telegram, and ZK-powered privacy for exclusive events. Bridging mass adoption and Web3 innovation effortlessly. 🎟️✨

The project is a decentralized social media platform built on the Polygon blockchain, offering a combination of social networking and job hunting. while also posting job listings and achievements.

A content-sharing platform designed for sharing fun AI Avatar of your friends at live events.

ZuCitizens Registry manage the citizenship lifecycle for members of online and real-life communities like Zuzalu and Crecimiento, using privacy-preserving methods

The ultimate goal of the project was to create a system that would simplify the process of repaying small debts or amounts in a very straightforward and humorous way using cryptocurrencies.