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
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.
Unified Agentic Quant intelligence across Crypto, Liquidity Pools, & Tokenized assets
On-chain funds of tokenized stocks on Robinhood chain Rico OTF is the on-chain equivalent of ETFs (Exchange Traded Funds) funds. Rico introduces funds which can be managed by expert financial advisors, portfolio managers or even ai agents with financial knowledge.
AgentGuard enables AI agents to earn on-chain credentials, build reputation through performance, and autonomously create treasury spend requests subject to human governance approval.
GhostShard is a privacy protocol for the EVM that brings UTXO-level privacy to account-based blockchains. By combining EIP-7702 account abstraction with ERC-5564 stealth addressing, GhostShard enables confidential transfers, hidden balances, and unlinkable transaction flows while remaining fully compatible with existing EVM assets and applications. Its novel architecture separates transaction validation from execution, delivering scalable privacy without sacrificing composability or user experience.
The prime brokerage layer for AI agents. PrimeAgent gives one agent a single margin account spanning off-chain Robinhood MCP and on-chain Robinhood Chain, with cross-domain netting in a Stylus engine.