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
DHRUV PANCHOLI
Capacitr is an idea launchpad where creators launch concepts with a prompt, AI agents and experts do the work, and everyone earns compounding ownership as it grows.
Cryptographic digital twins for physical assets. NFC chips + on-chain lifecycle tracking make counterfeits impossible. Verify any product with a tap. Built on Arbitrum.
An AI-driven onchain interactive confession quest where self-exploration is the core mechanic.Out of Jail 808347 is a narrative Web3 quest built at the intersection of AI, music, and blockchain — designed for a worldwide audience
AI DeFi bot on Arbitrum that grows USDC treasuries and lets agents spend rewards via API, user‑custodied.
Autopilot for crypto and tokenized RWA portfolios.
The credit layer for the agentic economy.
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!
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.
Escrow API for secure payments and fraud prevention using stablecoins
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.
ArbiLoop is an Arbitrum-native DeFi app for lending, borrowing, and loop strategies.It is non-custodial, automation-first, and focused on safer, more efficient DeFi management.
Numo is an onchain repo market for tokenized treasuries for which traders can borrow at a fixed rate against in FX stablecoins. This a first step to build an onchain fixed income markets for global FX.