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.
Natural language DCA platform on Farcaster with yield-generating vaults
GuardChain AI reimagines insurance for gig workers, daily wage earners, and community groups like Kudumbashree by fusing AI-powered claim verification with blockchain transparency and democratic governance. Every claim, vote, and surplus decision is immutably recorded on-chain, turning traditional insurance’s delays and opacity into a fast, fair, and community-owned system — the world’s first digital cooperative insurer built for the people it protects.
ArBi Freelance is a decentralized freelancing platform built on Arbitrum that transforms how freelancers and clients interact in the gig economy. Traditional freelancing platforms suffer from high fees, payment delays, and lack of transparency, often taking 10-20% commission while holding funds in escrow for weeks. This platform provides Arbitrum's fast and cost-effective infrastructure to create a trustless environment where smart contracts automatically handle payments, dispute resolution, and milestone tracking, ensuring freelancers get paid instantly upon work completion while clients enjoy complete transparency and reduced platform fees. The platform addresses critical pain points in the current freelancing ecosystem by implementing automated escrow systems, reputation-based smart contracts, and instant cryptocurrency payments. Freelancers can showcase their skills, bid on projects, and receive immediate payment without waiting for traditional banking processes, while clients benefit from secure milestone-based payments and automated dispute resolution. By utilizing Arbitrum's Layer 2 capabilities, ArBi Freelance eliminates the high transaction costs that plague other blockchain-based solutions, making micro-payments viable for small gigs and enabling a truly global, borderless freelancing economy where talent meets opportunity without geographical or financial barriers.
Turn Your Customer Base Into Your Brand's Marketing Team! BrandHero is a loyalty rewards platform that uses AI for creating RELEVANT bounties and ARBITRUM as the loyalty programs' trust layer!
Shinobi Cash: Cross-Chain Privacy Pools for the Multi-Chain World Shinobi Cash revolutionizes blockchain privacy by enabling users to deposit from any EVM chain and withdraw privately on any other chain. Shinobi Cash is built to meet users where they are, i.e, CrossChain. Key Features: - Built on Account Abstraction and OIF standards - Cross-chain deposits and withdrawals - 50-80% lower withdrawal costs using Paymaster and AA infra - Regulatory compliant with Association Set Provider - Single deployment serves all EVM chains - No custom relayer dependency
ZYURA makes flight delay insurance simple and instant using Arbitrum. Travelers pay a small premium, and if their flight is delayed, payouts are triggered automatically through smart contracts. No paperwork, no claims, and no waiting, just fast, reliable coverage. We make travel insurance transparent, affordable, and accessible to everyone.
ArbiRupee is a Rupee-backed stablecoin on Arbitrum, enabling INR deposits via Razorpay and 1:1 arbINR minting for seamless DeFi access.
Zynqtra is a gamified networking platform that makes events more engaging through QR scans, interest-based matches, and interactive challenges with live leaderboards.
A Stylus-powered recurring payments protocol on Arbitrum One, enabling automated subscriptions and payouts with Gelato.
A comprehensive DeFi platform on the Mantle chain providing secure transfers, group payments, and smart savings features
A payment solution that lets users pay via stablecoins directly from their crypto wallets, while merchants receive instant INR through UPI, bridging the gap between crypto and everyday payments.
We’re building Unwallet, a new payment infrastructure designed for the agent-driven future. It enables agents, people, and businesses to transact seamlessly on Arbitrum Sepolia with USDC, supporting micro-payments, stealth P2P transfers, and plug-and-play business integrations.
Most Hackathon Won
Most Project Built
Manobendra Mandal
Vivek Sahu
simp1e
zorzalcripto
zcy22606
David Barasa