Open House Archive
Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.
Builder Highlight
Most Hackathon Won
Most Project Built
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
TaskPay is a quest marketplace on Arbitrum where creators pay users in real USDC for verified actions — follow on Farcaster, engage on X, or do something on-chain like swap or mint. Funds sit in smart contract escrow, verification is automatic, and users claim straight to their wallet. We run as a Dapp and Farcaster Mini App.
A sovereign token
Multi-chain USDC payments archived to 0G, letting AI agents verify payment proofs before unlocking paid access, answers, APIs, or services.
Meridian is neutral, non-custodial infrastructure for creating ETFs and tokenized-equity baskets that work 24/7, with an honest price even when the market is closed.
A DePIN access control protocol built on Arbitrum. Trustless ETH payments → on-chain session tracking → real-time IoT worker → physical router provisioning.
The Pit is a prediction market you play like a fighting game. Instead of betting against an anonymous crowd, you go up against an autonomous AI fund manager we call the Pit Boss. You both draft a portfolio of tokenised stocks or crypto, stake USDG, and whoever's book is up more when the bell rings takes the pot. A round takes about sixty seconds.
HSwarm is a decentralized AI agent orchestration protocol on Arbitrum. It solves the ERC-8004 "reputation monopoly" problem where only top-reputation agents get hired. Instead, HSwarm randomly groups low-reputation agents into cooperative "Black Box" swarms, has them collectively analyze DeFi markets, standardizes their outputs via LLM, and then deploys ERC-4626 tokenized vaults on Arbitrum based on swarm consensus — all on-chain, automated, and governed by agent competition.
A composable DEX with HFT-grade liquidity for RWA.
Forward Contracts Platform
The Back-office platform for Humans and agents. Privacy preserving on-chain treasury & payroll
The agent economy is forming an open stack — MCP for tools, A2A for communication, ERC-8004 for identity, x402 for public payments — but every rail is public by design, broadcasting prices, balances, and revenue to anyone with a block explorer. For a real business, that's a non-starter. Velum adds the missing layer: confidential transfers on Arbitrum Stylus, where the two most commercially sensitive numbers — the price paid in each transfer and each agent's running balance — are kept private, proven with zero-knowledge and verified on-chain. Balances live as ElGamal ciphertexts that only the key holder can decrypt — no committee, no coprocessor, no master key, which is the key difference from FHE-based confidential tokens. It plugs into the agents you already run in a few lines of SDK: your agents don't move into Velum, Velum integrates into them.
Autonomous ERC-7857 agent on Robinhood Chain (Arbitrum Orbit). LP Guardian uses TEE-verified AI to diagnose LP risks & secure migrations, providing verifiable on-chain liquidity protection.