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
Manobendra Mandal
Vivek Sahu
simp1e
Hendrix Iphonk
Minh SÆ¡n
Ricky
Plexi is a composable ERC-4626 vault on Arbitrum that lets users deposit USDC and automatically gain exposure to yield strategies with real-time transparency. Instead of leaving capital idle or manually chasing yields, Plexi aggregates deposits, allocates them into a strategy, tracks TVL, shares, and hedge ratios on-chain, and provides a clean dashboard to monitor performance. The current MVP focuses on core vault mechanics—deposit, withdraw, and live stats—serving as the foundation for future integrations with protocols like GMX (GLP) and Hyperliquid for real yield and automated hedging.
SmartCache is an automated caching-as-a-service system for Arbitrum Stylus contracts. It allows developers to optimize contract performance directly from their code, without needing to manually interact with the CacheManager through a GUI or CLI. Using a simple annotation such as #[auto_cache], developers can indicate which contracts or functions should be evaluated for caching. An off-chain service then handles the entire process: benchmarking gas usage, analyzing cost-efficiency, and submitting a bid through Arbitrum’s CacheManager if the caching decision is financially beneficial.
TriggerX is a decentralized automation protocol that enables smart contracts to execute tasks based on time, conditions, or external events in a fully automated and trustless manner. Built on EigenLayer’s Actively Validated Services (AVS), it provides shared security and decentralization to ensure reliable task execution across multiple blockchains.
SOMA is a blockchain-powered platform transforming cross-border transfers in Africa. Using offline-first USSD technology, it enables instant, low-cost transactions on any mobile phone.
ZapGift is a decentralized peer-to-peer micro-gifting platform on Arbitrum, enabling users to send ARB-based gifts with customizable messages stored on IPFS . It supports charitable donations also
Fylaro is a revolutionary invoice financing marketplace built on the principles of the Finternet, leveraging tokenization and the Unified Ledger to connect businesses seeking working capital with global investors.
ThinkEdge is a decentralized, AI-powered virtual classroom system designed to transform traditional online education into a more interactive, transparent, and learner-centric experience. Our platform integrates blockchain for trust and transparency, AI for personalized learning paths, and edge computing for low-latency, real-time interactions. By decentralizing control, ThinkEdge empowers educators and learners to connect without relying on centralized intermediaries, ensuring fair access, data ownership, and automated engagement tracking.
ChainYodha.Ai provides transparent wallet and project trust scores derived from onchain activity and optional offchain signals. It exposes an onchain oracle contract where dApps can query wallet trust
Swap 300+ Cryptos into any Native Ecosystem Tokens
A decentralized P2P energy marketplace on Arbitrum, enabling users to buy, sell, and trade renewable energy securely with smart contracts, real-time tracking, and wallet integration.
Metanexus is an all-in-one gaming hub that merges Web2 and Web3 gaming into a single ecosystem. Unlike fragmented platforms where gamers jump between Steam for games, Discord for chat, OpenSea for NFTs, and separate esports sites for tournaments, Metanexus brings everything together in one place.
SkillPays isn't just another learning platform. It's a platform focused on originality, producing students who acquire actual ready-for-market skills, not just abstract knowledge. The platform introduces leaderboards and hackathons for top students, allowing them to showcase their skills by building solutions and innovations to compete for a prize. Our platform also allows organizations to create and monetize bootcamps (optional). This makes it a win-win for everybody.