Open House Archive
Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.
Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.
Most Hackathon Won
Most Project Built
songsu
elpabl0.eth
contact ai
zorzalcripto
Rick
Amaan Sayyad
The coordination layer for Europe's official BAYC chapter. BAYC holders across Europe can't find, trust or help each other. We fix that: wallet-verified profiles, city map, noticeboard and AI-powered matching. Soulbound badges reward real contribution. Scales to any membership organisation globally.
An AI multiplayer game builder and creator economy.
Demo Blockchain + Cryptographie + Contrat Intelligent + Résilience éternelle + FastAPI backend pour Hackathons, développée en Python pour l’API et la cryptographie, Solidity pour les smart contracts,
ExecutionHub is a non-custodial DeFi hub that lets users connect their own wallet, create automated limit orders, swap tokens, and bridge assets across compatible networks. The goal is to keep DeFi user-controlled while improving execution clarity, route review, automation and cross-chain UX. For this Buildathon, I want to expand and refine ExecutionHub on Arbitrum, focusing on safer on-chain operations without custody.
Z0tz is a gasless confidential stablecoin wallet designed to make privacy the default user experience in Web3. Built with Fhenix CoFHE, ERC-4337 account abstraction, P-256 passkeys, stealth addresses, and a custom paymaster, Z0tz lets users hold, send, bridge, and use stablecoins without seed phrases, without ETH for gas, and without exposing their wallet identity or balances on-chain. Instead of treating privacy as an optional feature, Z0tz makes it architectural: encrypted balances, pseudonymous accounting, stealth-routed payments, and confidential DeFi flows are built directly into the wallet. Through Tezcatli vaults, users can access shielded Aave V3 yield, while the upcoming dApps tab extends the same privacy model to WalletConnect-enabled protocols such as Aave, Uniswap, and other permissionless applications. Z0tz is not just a private wallet. It is a privacy wallet layer for stablecoins, DeFi, and future Fhenix dApps. Fhenix encrypts computation. Z0tz encrypts the user. 🦇
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Pond3r is an AI-powered perpetuals trading terminal built on GMX that enables users to create, test, and execute both single-position and portfolio-level strategies. By combining AI-driven research, personalized screeners, backtesting, and one-click execution, Pond3r removes much of the complexity and manual effort associated with perpetual trading, allowing users to move seamlessly from investment ideas to live deployment while retaining full control of their assets.
a non-custodial subscription protocol for AI agents. Recurring, on-chain payment rails that let agents earn like SaaS, without a Stripe account or a custodian in the middle: https://daemonagents.com/
ByHuman is building a writing receipt protocol for the AI era. As AI-generated text floods the internet, readers, platforms, publishers, and online communities are losing reliable trust signals for authorship. Existing tools mostly analyze the final text and make probabilistic guesses. ByHuman solves this from the other side: we capture composition evidence at the point of writing, including what was typed, pasted, edited, and preserved, then generate a signed writing receipt. Receipt hashes are anchored on Arbitrum, while the original text stays off-chain, creating a public, tamper-evident verification layer for online writing.
AfreeKart is a programmable escrow infrastructure project for commerce, using smart contracts to enforce safer buyer-seller transactions and reduce trust friction in online trade.
Your AI portfolio manager for DeFi
Lucilla is the only mobile platform with an AI agent that drops multinational, stablecoin-funded rewards across thousands of locations in seconds. Users walk into those zones and claim cash directly to their wallets. Lucilla strength isn't just an ad network it's a social rewards platform. Users earn stablecoins from brands, then stake that cash against friends in step matches: daily walking competitions where the winner takes the pot.