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
Manobendra Mandal
Vivek Sahu
simp1e
Manjeet Sharma
Rick
DHRUV PANCHOLI
African Trade Finance on Arbitrum Built on Arbitrum Powered by Pyth Lending by Silo Testnet Live Closing Africa's $120B trade finance gap through tokenized agricultural invoices on Arbitrum
HoodGap is a 24/7 portfolio insurance for the weekend gap. We protect your stock positions against the volatility that happens while the market is closed. Buy a policy before Friday's close, set your risk threshold, and if the stock gaps down on Monday, you get an instant 100% binary payout. No claims, no waitin, just automated peace of mind.
AI agents discover, negotiate, and pay each other for services using HTTP 402 micropayments on Arbitrum with real USDC settlements.
One of the best visuals and tools for managing your own folders. All your movies presented better than netflix. And hey... its 100% Free for wallet users.
Voux solves the lack of professional documentation in Web3. It’s a signature-less platform that generates PDF invoices and reports for stablecoins, ETH, and NFTs. By using user-side tech, it provides secure, instant financial records for accounting without ever needing wallet signatures.
Numbers Over Addresses.
The decentralized execution layer for Web3 gigs. Merge Protocol replaces middlemen with smart contract escrow on Arbitrum, UI-assisted GitHub PR verification, and encrypted XMTP wallet chat. (191 char
ChainWard provides on-chain incident detection for Orbit. It records silent failures immutably, enabling auto-pausing bridges, enforced SLAs, and verifiable forensic proof of downtime.
Fhenix Escrow is a private escrow platform for Web3. Clients and developers agree on encrypted terms and milestones; both sign; the client funds escrow. Work is tracked by milestones, and payouts or refunds are enforced on-chain—without exposing amounts or details to the chain. We use Fhenix’s fully homomorphic encryption (FHE) so payment and milestone values stay encrypted on-chain while the contract still verifies and releases funds. Live on Arbitrum Sepolia https://fhenixescrow.netlify.app
ArbiTrace is a focused debugging tool for Arbitrum developers that explains exactly why retryable transactions and Stylus/WASM contracts fail, with permanent onchain telemetry anchors.
A Uniswap v4 hook that dynamically adjusts swap fees based on live prediction market signals. When the probability of an adverse ETH price event rises, the hook increases fees or blocks swaps entirely — protecting LPs and swappers in real time.
Inkwell is a gas static analyzer and runtime gas profiler that generates ink reports, identifying "dry nib" and "gas spills" bugs. It provides the gas benchmarks required for stylus contracts for unoptimized stylus smart contracts.