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.
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.
"Make Arbitrum the default execution layer for institutional capital by providing programmable, composable policy controls that enforce compliance on every on-chain transfer. FortiLayer turns Arbitrum
The credit layer for the agentic economy.
Summarizes any youtube video by pasting the video URL
Summarizes any youtube video by pasting the video URL
Providus is an institutional-grade risk engine that runs directly on-chain using Arbitrum Stylus. It computes Value at Risk (VaR) and Expected Shortfall (ES) — the same metrics banks use to evaluate portfolio risk without relying on a centralized server or a trusted oracle. The core breakthrough is a Log-Space Optimization that removes computationally expensive exponential functions from the Monte Carlo simulation loop. This makes 10,000-path simulations viable on-chain for the first time — something impossible on standard EVM due to gas constraints. Arbitrum Stylus (Rust → WASM) is the only execution environment where this works. The full product ships with: a live Protocol Stress Test Simulator (Aave V3, Maker, Compound presets), cryptographic on-chain proof generation, PDF report export, a developer API with tiered billing, API key management, webhooks, and a TypeScript SDK.
Most Hackathon Won
Most Project Built
Manobendra Mandal
Vivek Sahu
simp1e
zorzalcripto
zcy22606
David Barasa