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
Escrow API for secure payments and fraud prevention using stablecoins
BlockOps - A no-code AI-powered platform for building and deploying blockchain agents on Arbitrum. Users can create workflows via drag-and-drop or natural language (using AI) and automate transfers using Arbitrum Stylus smart contracts.
PingPay: AI-native money app on Arbitrum. Pay, Sweep, or Invest — all from chat.
Numo is an onchain repo market for tokenized treasuries for which traders can borrow at a fixed rate against in FX stablecoins. This is a first step to building an onchain fixed income markets for global FX.
imagine what the biggest Uniswap pool could be
Runera turns real effort into on-chain reputation
An AI multiplayer game builder and creator economy.
PrimeVaults is an on-chain savings protocol built for stable yield. It features real-time, verifiable on-chain proof-of-reserves to protect principal, implemented as an upgraded ERC-4626 vault. Our Unified Yield Model optimizes risk-adjusted strategy allocation across chains, targeting base returns benchmarked above Aave V3 supply rates.
A regional stablecoin pegged to the Ghana cedi built to power the next era of payments, remittance, cross-border payments and onchain finance in Ghana!
Payrium is building a utility-first wallet with token-gated governance (DAO), designed for everyday users and long-term community ownership.
REBEKA is an institutional-grade RWA infrastructure designed to bridge traditional real estate with on-chain liquidity, solving the two biggest barriers for institutional capital: legal certainty and financial privacy. By leveraging Arbitrum’s high-performance network, we provide a secure framework backed by Mexican Irrevocable Trusts (Fideicomisos). Our protocol introduces two core technological breakthroughs: * The Sovereign Permissioned Layer: A native compliance engine built directly into our Arbitrum smart contracts. Token transfers are strictly restricted to KYC/AML-verified wallets. If a wallet lacks legal authorization, the smart contract automatically reverts the transaction. * Institutional Privacy (Confidential-by-Design): To meet traditional banking privacy standards, we integrated Fully Homomorphic Encryption (FHE) via Fhenix. Investor balances and transaction amounts remain mathematically encrypted (as ciphertext) on the public block explorer, ensuring total confidentiality. Finally, REBEKA is future-proofed for global liquidity. In our next phase, we are integrating LayerZero’s cross-chain messaging to evolve into an omnichain protocol, attracting capital from any network while maintaining Arbitrum as our definitive source of legal truth.
QSTN is a Web3 survey platform where businesses reward feedback with on-chain incentives. Users participate with just an email and optionally connect a wallet to claim crypto rewards.