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
T-BillFlow is an Arbitrum-native execution layer for autonomous AI agents managing tokenized Treasury/RWA positions. It combines cryptographically enforced agent mandates with on-chain RWA eligibility checks through an execution gate. Its core principle is “Authorization ≠ Eligibility”: an agent can have permission to act, but execution only proceeds when both the mandate and asset state satisfy protocol rules.
ETHBid is a discovery market on Arbitrum.
Say what you believe about the world. Watch it play out. SuperView turns a one-sentence view into a researched basket of Robinhood Chain stock tokens, then keeps score against the S&P 500 in public.
Parametric stablecoin cover on Arbitrum. If USDG depegs, a keeper fires the payout and USDG lands in the holder's wallet automatically, with no claim form. Underwriters back it via 1inch Aqua.
An onchain carry-trade agent for Arbitrum One and Robinhood Chain. It finds, sizes, guards and executes carry trades across Aave, Compound, GMX, Uniswap and tokenized stocks, and tells any wallet the yield it is missing.
Your agent is about to act,but it is blind. GroundTruth gives it eyes: fresh physical evidence, AI-assisted verification, and auditable Arbitrum receipts.
Xorv lets anyone rent out the idle quota on the AI subscription they already pay for (Claude, Codex, Grok) and get paid per job in Paxos USDG on Arbitrum. A provider runs one command, xorv start. Thei
Forwards on Robinhood Stock Tokens, priced on-chain from interest-rate parity instead of quoted by a dealer. RFQ, two-sided margin, liquidation, bad-debt waterfall and cash settlement.
AfterHours is a lending protocol on Robinhood Chain that lets you borrow USDG against tokenized stocks like NVIDIA, Apple, Tesla and the S&P 500, any time of day. Unlike generic crypto lending, it follows the stock market clock. Borrow limits are higher during market hours and tighter overnight. A small after-hours fee funds a reserve that protects lenders from opening-bell crashes. Liquidations only happen on real post-open prices after a short grace period. Dividends automatically pay down loans, and stock splits never affect a loan's safety. It's a hackathon prototype running on testnet with test tokens and has not been audited.
Thenar pays people in dollars to teach robots. Funders post tasks ("put the apple in the basket") with a bounty in Paxos USDG, held in escrow on Arbitrum and funded with one gasless signature. Operato
AI agents should agree on what counts as completed work before money moves. Agent3 Deal connects negotiated terms, escrowed USDC payment, delivery checks, and outcome-backed reputation.
Multilateral clearing and liquidity layer for autonomous machine payments. NORN eliminates 91% of transfer overhead by collapsing circular debt loops across AI agents before onchain settlement.