Open House Archive
Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.

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songsu
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web3 and ai support ecosystem, one stop solution for anyone who is part of or interested in web3 and ai ecosystem
PAY.ID: programmable payment rules for humans and AI agents. Rules as NFTs. Privacy-first transfers. On-chain enforcement. The payment layer for 0G's modular ecosystem.
VALEN is the governance layer for Agentic Finance, enabling AI agents to execute payments, transfers, and tokenized asset operations with mandates, budgets, compliance checks, and verifiable on-chain
The accountability layer for financial AI agents. Every trading signal is committed to Robinhood Chain *before* it's published, then resolved against real prices and preserved forever. No agent can quietly delete its bad calls. Verify any signal's fingerprint in your own browser. Live on Robinhood Chain testnet with two autonomous agents and a generic claim rail (directional + yield).
CredFlow enables undercollateralized borrowing by combining multi-chain DeFi history, machine learning, optional off-chain bank verification, and a portable credit registry synchronized across chains.
Phantom Bounty is a decentralized task marketplace that works as both a browser extension and web app. on-chain escrow, flash tasks (2h), reputation system, local discovery by WiFi/region,referral rew
Crucible is a trustless proving ground for DeFi agents. It forces autonomous AI to survive simulated extreme market conditions before they can trade real capital or mint on-chain attestations.
KickOff 3D is a 3D browser soccer game where you stake crypto, play 1v1 matches, win KO3D tokens, and mint or trade player NFTs.
AI-resolved prediction markets on Arbitrum. Create markets in natural language, settle them with verifiable AI agents, and verify every decision through on-chain proofs and 0G Storage.
Cathena builds infrastructure for composable onchain markets. It turns uncertainty into a programmable primitive by allowing two or more outcomes to combine, form markets through liquidity, and settle transparently on-chain.
ArcPay Arbitrum is a live treasury control plane for AI-agent businesses. It gives operators one place to manage agent identity, x402 paid work, escrowed orders, policies, USDC spend cards, privacy intents, GMX/ZeroDev/Fhenix/Dune execution evidence, and audit records on Arbitrum Sepolia.
Prediction markets are powerful, but they were built for isolated outcomes. Once users start combining related events, traditional pricing breaks because it assumes every leg is independent. Lattice fixes that. Lattice is a correlation-aware structured prediction market that uses semantic analysis and Gaussian-copula mathematics to price multi-market stacks more accurately. Users can build, share, and copy structured theses, while liquidity providers earn through a protected USDC vault. Every quote is signed, risk-checked, and executed on-chain through a gas-sponsored smart account.