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
As TCG collectors ourselves, we’re building Prisms to gamify Pokémon TCG collecting.
Milestone-gated disaster relief & donation protocol powered by Arbitrum Stylus (Rust WASM). Transparent fund releases enforced through verifiable on-chain audits.
Open-source privacy protocol on Ethereum. Prove a transaction happened to one chosen auditor — without giving them spending power. Independently verifiable. 27 automated tests, 0 failures.
RedCarpetHQ is a regulated RWA marketplace that turns film profit participation rights into liquid, tradeable securities on Robinhood Chain. Producers tokenize future film revenue through SPV structures and raise capital at 0% platform fee. Investors buy in, trade peer-to-peer on an order-book market, and borrow against their holdings through ERC-4626 lending vaults. We capture 2.5% on every secondary trade. The protocol is built ground-up for agentic trading: no AMM, no matching engine. Bots read the order book and execute trades themselves. We ship a Claude MCP server so any AI agent can trade, lend, and manage positions through natural language, plus an agentic powered market making system that runs trading strategies autonomously. Our lending vaults run on USDG on Robinhood Chain. USDG depositors supply liquidity and earn yield from borrower interest, paid at dynamic rates set by our RiskOracle.
One call returns eight named blocking conditions as reason bits, plus an unreadable bit. A stateless, deny-by-default view contract for tokenised real-world assets on Arbitrum and Robinhood Chain.
Zyron is a smart contract security platform that combines deep static analysis with expert human review and cryptographically verifiable on-chain attestations. We help teams ship safer contracts by detecting vulnerabilities early, enabling structured auditor workflows, and issuing immutable certificates of review that live onchain.
A spherical AMM engine that enables multi-token pools like Curve while providing higher-dimensional concentrated liquidity inspired by Uniswap v3. Implemented as a Uniswap v4 hook, with the AMM mthematics fully derived and implemented from Paradigm’s Orbital paper.
Risk intelligence for Robinhood Stock Tokens. Parity monitors on-chain prices against reference values and detects abnormal, persistent deviations using historical baselines.
Equity Perps on Robinhood Chain. The Equity Perps market stays open after the cash session closes, priced from the last real print. You can also earn yields from your equity tokens by providing liquidity. Try now at: https://ace-fe.vercel.app
CrossSign is a trustless cross-wallet verification layer that proves a user's wallet ownership through live cryptographic signatures and anchors verifications onchain.
Community infrastructure for regenerative work. Record what you did, have your community verify it, and connect that record to funding. Offline-first app, passkey sign-in, public records on Arbitrum, and the people doing the work own the proof of it.
Roundtrip measures whether tokenised stocks on Robinhood Chain can actually be sold, and makes every published round recomputable.