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
Amaan Sayyad
Powers Protocol allows startups to create bespoke on-chain governance flows: separate powers in org, create checks and balances between roles, encode nested relationships between orgs and RBAC for deliberation channels. Create an org in 30 minutes using claude skill (+ RAG & MCP); AI agent compatible, native support for Account Abstraction.
The competitive allocation layer for the programmable economy.
EdenFi is a global money app connecting Africa and the diaspora to easy finance.
Agentic Growth for Brands and Creators
Clearstone is the permissioning layer for institutional DeFi. We turn battle-tested lending protocols like Morpho, Euler and Kamino into KYC-gated, non-custodial markets that meet AML, FINMA and MiCA requirements. Winner of StableHacks ($100k + pilot with AMINA Bank), hosted by Tenity, the Swiss fintech VC backed by SIX and UBS, and now shipping on Robinhood Chain.
Pinaivu is private, verifiable AI for healthcare and medical R&D, built on Arbitrum. Independent GPU operators compete in a real-time auction to serve each prompt, prompts are encrypted end-to-end so no one not even the operator can read patient or research data, and every response produces a cryptographically signed, on-chain-auditable receipt. Payments settle trustlessly on Arbitrum and records are archived to IPFS confidential and provable AI, delivered via a chat app and an enterprise API.
Verus provides the BEST possible execution for perp trades across 100+ markets
Personalized agents to run delta-neutral basis trade strategies
Hero Network is the audit and verification layer for AI agents and physical AI. As autonomous agents and robots take on consequential work, the record of what they actually did is missing. Our Proof of Action primitive turns every material action an AI takes, an agent decision or a robot movement, into a tamper-evident, per-action record that any customer, insurer, auditor or regulator can verify independently, for a fraction of a cent, while the AI's rules stay sealed. Every record climbs a four-level trust ladder, from a signed log, to hardware-attested execution, to on-chain anchoring on Arbitrum, to zero-knowledge proofs. The protocol has no token and no admin keys, with roots on-chain. This opens a USD 265 billion market. Today, testing, inspection and certification firms such as SGS, Bureau Veritas, DNV, TÜV and BSI verify that a system meets safety and quality standards, then issue a certificate: a stamp valid at a single point in time that cannot cover how the system behaves once it is deployed. Yet the EU AI Act and the incoming EU Machinery Regulation now require in-service logging and human oversight for AI-enabled systems, which a one-time certificate cannot satisfy. Hero is the continuous, in-service evidence layer those firms resell, and the deployers they certify buy directly. We anchor the world's AI actions on Arbitrum.
Strats is an engine that turns trading strategies into instruments. Multi-leg, multi-venue, multi-asset positions, executed as one asset, governed by on-chain policy, with a signed receipt at every settlement. This weekend we plugged both Arbitrum and Robinhood Chain venues into it.. Our target audience is: creators such as pro traders and quants, consumers such as sophisticated holders of vault instruments and long term allocators such as treasuries and family offices.
Vitalik Buterin Landed on Our Thesis Crypto is the riskiest major asset class in history. And yet — it has almost zero infrastructure for managing that risk. In traditional finance, risk transfer products are an $18 trillion market. In crypto? Essentially zero. That is a critical infrastructure gap. If crypto risk follows the same evolutionary arc as TradFi — and it will, because institutions will demand it — the on-chain risk market is a $350 billion opportunity. This isn't just our thesis. In February 2026, Vitalik Buterin challenged DeFi builders to stop iterating on stablecoins and "dig a layer deeper" into the real underlying problem — risk management and hedging. Then in June, he went further, publishing a research post proposing a new primitive for risk transfer and price stability: split an underlying asset into two halves that swap risk using synthetic options, instead of relying on debt and liquidations. That is, almost line for line, the architecture we've been building. So when the most credible architect in crypto independently lands on the same thesis as you, this stops being a bet on a thesis. It becomes a question of who builds it first. That's us. We're building the missing risk layer of crypto — we tokenize risk and make it tradeable.
Regulated home-currency settlement for AI-agent payments We give a small business a simple, non-custodial way to turn the stablecoins it receives into ordinary money in its bank account — in minutes, and without an exchange.