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.
WorkProof is a Web3-powered ERP module built on Arbitrum One that transforms professional credentials into verifiable on-chain assets. It enables talent to mint Soulbound Tokens (SBTs) as immutable proof of their work experience, monetize their profiles through paid access passes with automatic royalties, and execute freelance service contracts with full payment guarantees via on-chain escrow. Built with Rust, Vue 3, and Solidity, it connects talent, companies, and validators in a trustless ecosystem where reputation has real economic value.
SwiftRail is a gasless USDC checkout stack for Arbitrum Sepolia. Customers sign once with USDC permit and do not pay ETH gas. A relayer sponsors gas, takes a small fee, and settles net USDC to the me
The trust layer infrastructure for AI agents onchain identity, registry, and economic primitives for the open agentic web built on Arbitrum .
The Autonomous Hedge Fund System that Implement the Cross-Chain, LVR-Protected, & Linearized Yield Protocol.
Permissionless treasury control plane for stablecoin and tokenized-asset operations: policy-enforced intents, oracle-based risk routing, approvals, and immutable onchain receipts.
Zeva is an intelligent agentic system that manages your wealth on Arbitrum. We wanted to make DeFi as easy as sending a DM. With Zeva, you don't need to be a crypto expert to earn yield. You just tell Zeva what you want to do, and it executes the strategy for you. It’s secured by ZK-Email and your phone's biometrics, so you get the ease of a bank with the security of a hardware wallet.
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.
BlockOps - A no-code AI-powered platform for building and deploying blockchain agents on Arbitrum. Users can create workflows via drag-and-drop or natural language (using AI) and automate transfers using Arbitrum Stylus smart contracts.
Trustless DeFi trading agent verification using STARK proofs on Arbitrum Stylus. Generates browser-side STARK proofs of Sharpe ratio from real GMX V2 trades and verifies them on-chain — no trusted set
Instead of turning the blockchain into a fully opaque privacy layer (which undermines the transparency that made blockchains valuable in the first place), we built StealthPay—an opt-in privacy primitive for users who don’t want their on-chain activity easily trackable, while still preserving the public verifiability of transactions. StealthPay is built on ERC-5564 (Stealth Addresses) and ERC-6538 (Stealth Meta-Address Registry), using the stealth “announcer” flow to enable users to send and receive funds on-chain via one-time stealth addresses rather than their public wallet address. For this hackathon, we shipped an MVP focused on core stealth transfers. Post-hackathon, we plan to expand with features like P2P flows, ENS-based routing (we hit an ENS resolver issue on Arbitrum during implementation, which we also want to support as a first-class feature), a message/inbox experience, and other privacy-forward UX improvements.
A self-custodial payment platform that lets anyone accept crypto and fiat payments through a shareable QR code, powered by an autonomous AI agent wallet on Arbitrum.
TrainChain is a decentralized ticketing platform that transforms train travel through blockchain technology. By minting tickets as NFTs on Arbitrum, TrainChain eliminates counterfeiting, enables secur
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