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
Edy Cu
chubbyzroxas
Yayan Fauzi
zorzalcripto
Amaan Sayyad
Aaditya Rawat
Stock-linked contractor bonuses with onchain escrow: the employer funds it, the contract holds it, and the contractor can claim after the deadline if it isn't released.
Invoice financing for African exporters on Robinhood Chain and Arbitrum. Investors fund verified invoices in USDG; the exporter is paid when funding completes; a Rust Stylus engine prices the risk.
On-chain payroll where anyone can verify how much was set aside and how much was actually paid out, while individual salaries stay committed as salted hashes instead of published.
Metaverse with focus on business networking
Tend is a defined-risk BTC/ETH/MON trading app on Robinhood Chain testnet: choose UP/DOWN, expiry and a fixed 1.5×–3× winning payout; maximum loss is the premium.
It's a trust and accountability protocol for autonomous AI agents on Arbitrum, built for a world where agents execute trades, manage liquidity, and control on-chain capital with no human in the loop.
Moeazi is building a path from guided investing to user-directed AI trading without forcing everyone to become an expert, and without holding back those who want to go deeper.
Setryn is the private fixed-expiry exchange on Arbitrum, where users trade future prices, rates, yield, and complete strategies through public markets or private RFQs with collateral-backed settlement.
A receipt your agent can spend once. Nota binds an x402 payment to the line items the seller signed, and makes that receipt redeemable — exactly once, only by the wallet that paid.
Healthcare Capacity, Connected. Clinova is a decentralized healthcare infrastructure network that connects healthcare businesses with verified diagnostic providers and available capacity. We make it easier to discover, reserve, verify, and pay for healthcare services across a distributed provider network—using blockchain for transparent escrow, proof of service, settlement, and reputation. Clinova turns fragmented healthcare capacity into programmable infrastructure that businesses can rely on.
EggFarm Legend is a creature-breeding game on Arbitrum where care beats cash: feed your NFT creatures, hatch rarer eggs, battle, and trade for ARB. A well-fed Common can beat a neglected Legendary.
Weekly options vaults for Robinhood Chain stock tokens, paid in USDG. An AI agent picks each week's strike; the contract enforces its mandate and slashes its bond to depositors if it breaks the rules.