Check out the projects created at past events



A treasure hunt game based on geolocation, using zk-proofs to hide the location.

Secure whistleblower identity manage tool using ZK for compliance to european directive and spanish Law




A conversational wallet Manager that processes securly all user crypto needs

A Circuit Breakers as a Service platform. It's a constructor for circuit breakers that triggers pre-set risk management functions based on specified asset price fluctuations within a defined time period.

Automatic hedging against impermanent loss using V4 hooks and options



VoiceSence leverages the power of AI voice recognition to make web3 more inclusive.


Chainstalker - is a plugin that unveils onchain reputation (data) of other users / wallets while you browsing your socials, news, art or gaming platforms.



Creation of onchain condition-gated discussion & threads-like channels.

NFT integration and community rewards of a card gaming app. Card NFT gift for first-time users, incorporating a sybil-resistant login mechanism with Sismo. No-fee NFT minting on ImmutableX.

blockchain platform fueling sustainable philanthropy in emerging markets. Enables traceable donations, promoting transparency, and cultivating direct donor-project interactions.

Allow anyone to access your IoT-based information by just paying you. Want to know how hot it is at ETHParis? Go to hotparis.eth.link and find out!


The project "Segment" is an NFT indexer developed on the Consensys layer 2 platform called Linea. The indexer is written in Golang and is highly portable, requiring only an Infura API key and a PostgreSQL database to index the entire blockchain.

Biconomy Social Login is a starter template for Next.js 13, facilitating seamless integration of social login and gasless transactions in dApps, streamlining blockchain interactions.

A NFT based Rentable Game Account utilising EIP4907 and EIP6551

Send and receive crypto through a cross platform mobile application!

Dive into Trevi Fountain, a blockchain revolution where wishes transform into unique NFTs. Toss a coin into our pool for a chance to win big and see your desires immortalized in digital art!

This project aims to develop an AI-based system for predicting the price of cryptocurrencies. Using historical data and machine learning algorithms, the system will analyze market trends and provide accurate price predictions to assist investors in making informed decisions.



A no-code platform for organizations to build, customize, and deploy smart contract accounts (ERC4337) on behalf of their employees and vendors to facilitate privacy-preserving payments on-chain - all with a seamless web2 experience.

A public good marketplace contracts with full onchain data to trade NFTs without platform fees nor API key

ADDEX is one of Dex built in some evm blockchain. User doesn't have to pay for that, because advertisement merchant pay for the gas.




An NFT based game that uses session keys to change how users are interacting to blockchain


Our solution allows patients to keep their medical information in self custody and helps clinical research institutions with the recruitment of study participants.





Aggregate all web3 messaging app into S3nd! 🌐 Your one-stop hub for all Web3 messaging apps. Easy single sign-on, Human verification with Worldcoin ✔️ , & native on-chain messaging support. No bots, only genuine convos!

We built a NFT auction house to enable people to mint NFTs for their real-world assets to auction them. In that way, we add more utility to real-world assets like gold coins, historical money, stamps and paintings..

Socrates is the credibility quantification protocol. User votes and their calculation allows to go from feelings to maths, when it comes to define whether a piece of information is true or false.



2FA for self-custodied Ethereum wallets. Users can set their own daily transaction limit & add a security key (like YubiKey) to authenticate high-value transactions. TxAuthenticator is an extra security layer for web and mobile-based wallets.



Social relationships for your NFTs that are not tied to your personal identities! Discover your counterparts based on your preferences by staying anonymous using zkProofs! ⚡


Hybrid indexer capable of indexing both on and off-chain data in an effcient and decoupled manner. Powered by Envio.

DelegAI is a AI based delegation tool that reflects the forum community's opinion on this proposals by using the delegators voting power.

Facilitating networks of intersubjective co-creation with on-chain Contribution Graphs of derived works


The purpose of this app is to demonstrate a use-case that integrates Vehicles, Web3 Digital Identity and Web3 messaging. We wanted to take events from a connected vehicle (diagnotics, postiion, etc.) and orchestrate the data one-chain when a critical event occured. We explored:


Uniswap Fee Calculator is a tool for you to get the approximated fee APR from every trading pair on Uniswap. Currently it supports Ethereum, Polygon, Optimism, and Arbitrum. Users can easily expand the supported trading pairs and chains by editing the config file.

Multi-chain derivative strategy platform using account abstraction (ERP4337) to deliver seamless trading