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
The private P2P execution environment for trading desks and market makers on Robinhood Chain. Trade tokenized stocks and crypto at scale, with private, atomic, and compliant settlement.
https://tortuga.estate/ Our data room that includes detailed project description and products that are live in the traditional finance world, ready to be brought on-chain: https://drive.google.com/drive/folders/1klWlssiytxiGvrKxemNBNsMhH-q3JXpw Tortuga brings institutional real estate bonds on-chain — existing, regulated, cash-flowing securities. We are a Luxembourg-incorporated platform connecting on-chain capital with institutional real-world investments, combining TradFi structuring discipline with crypto-native distribution. We convert ISIN-coded, bankruptcy-remote real estate debt instruments (RELINCs) into permissioned on-chain tokens, wrapped through ring-fenced Luxembourg securitisation compartments. These are bankable assets previously accessible only to HNWIs through private banks and wealth advisors — now available to on-chain treasuries, vaults, and sophisticated crypto-native allocators. Our pipeline is powered by Estating: our Luxembourg-based origination partner — operating since 2018, PwC–audited, with $60M+ structured across 20+ deals, zero principal losses, and 5–28% IRR.
AlphaYields is the yield layer of DeFi — diversified onchain yield through a single liquid asset. We issue ayTokens: one liquid, yield-bearing token per asset, but where most yield tokens earn from a single source, an ayToken holds a diversified portfolio of verified DeFi strategies — for any asset you hold (ETH, BTC, FLOW, USD). Deposit once and hold the ayToken; underneath, we discover, verify, allocate, and rebalance across strategies, with every figure computed from chain and verifiable at any block.
CollateralRails is a trust and protection layer for AI agent payments. As AI agents begin making autonomous purchases, existing payment protocols can authorize and execute transactions, but they do not fully answer one critical question: can the seller be trusted to deliver? For high-value commerce, escrow, arbitration, and human dispute resolution may work. But for small agentic payments, such as API calls, tool usage, data access, or micro-services, those models are too slow and too expensive. A $0.03 transaction cannot support a manual dispute process. CollateralRails solves this by shifting protection from buyer-side escrow to seller-side accountability. Sellers register on-chain and post a performance bond. AI agents can then pay sellers directly, but only if they satisfy predefined policy rules. After payment, the seller must provide a valid delivery receipt. A watcher verifies the receipt and updates the seller’s reputation. If delivery succeeds, the seller’s reputation improves. If delivery fails, or no valid receipt is provided, the buyer is automatically refunded from the seller’s bond. The seller is slashed, reputation is reduced, and repeated failures can lead to delisting. Buyer funds are never escrowed. Payments remain fast and direct. Trust comes from bonded sellers, automated verification, and programmable enforcement. CollateralRails makes agentic commerce safer by giving AI agents a simple trust rule: Pay only sellers who are bonded, verified, and within policy limits.
Denaria is a self-custodial perpetual DEX built for the next generation of traders. Denaria delivers a mobile-first trading experience designed to make perpetual trading accessible without sacrificing transparency. The protocol is powered by a custom dynamic virtual AMM that combines oracle-based pricing with virtual liquidity. This architecture enables leveraged trading with efficient execution and optimized slippage, while remaining fully on-chain.
Silicon-attested identity for RWA tokenization, cross-chain bridges, and M2M commerce. Live on Arbitrum, evolving into Arbitrum Orbit L3.
Carta rebuilt onchain for the programmable economy
DeFi primitive for fixed yield
Trade & hedge dollar index perpetuals.
Decentralized 'Forgot my password', to onboard the next billion users
AI agents that price and trade insurance on DeFi yield positions.
We stop agents from paying fake sellers. Confirmation of Payee, for the agent economy.