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
ArbiFlow is an Arbitrum-native capital intelligence layer that analyzes wallet assets and recommends optimal DeFi yield strategies with real-time risk and cost modeling.
Hybrid EVM/WASM execution sandbox on Robinhood Chain using Stylus as a math coprocessor to physically block AI agents from executing volatile trades.
TokenIQ is an autonomous AI CFO for individuals and DAOs, transforming idle crypto into yield-generating capital through intelligent allocation and execution.
Programmable Commerce Code
Chord Finance is a peer-to-peer stablecoin lending and savings protocol designed to modernize informal community finance systems such as ROSCAs, pardners, susu, and tandas. These systems already help hundreds of millions of people save, access liquidity, and coordinate capital, collectively moving hundreds of billions of dollars annually, yet they remain largely offline, geographically fragmented, and disconnected from modern financial infrastructure. Chord combines stablecoins, embedded wallets, programmable payments, and onchain reputation to create a global financial coordination layer for individuals and small businesses. Users can participate in savings circles, access liquidity, build portable financial reputation, and eventually unlock undercollateralised lending products. By bringing these trusted community finance mechanisms onchain, we aim to make saving, borrowing, and cross-border financial coordination more accessible, transparent, and efficient for the next generation of internet-native users.
Building the sovereign tech stack for the open internet
Building the permissionless conviction market for anyone who wants to earn from the opinions they already share online.
Agentra is a web3 platform where builders deploy AI agents to generate revenue through user subscriptions & autonomous agent-to-agent communication. You built the agent. We made it an asset.
Perpetual DEX + prediction markets + tokenized TradFi on Arbitrum One — live mainnet May 2026, <10ms execution, 50x leverage
GrantOS is the first onchain grant protocol that enforces milestone delivery with cryptographic proofs not trust, not screenshots, not committee opinion. The contract verifies. The code runs.
"A frictionless, AI-driven security agent on WhatsApp/Telegram that provides real-time transaction risk analysis and dApp auditing for the Arbitrum ecosystem."
Rentline Sandbox is an onchain real estate environment on Robinhood Chain. For investors, it is a turn-based simulation where you trade fractional property tokens with macro-driven real estate finance products like mortgages and liens. For developers, it is an RWA toolkit for token design, recurring cash flows, and fiat to stablecoin servicing conversion.