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
Akan
Skia Variants
Hafiidh Luqmanul Hakim
Autonomous AI agent monitoring Arbitrum DeFi (DeFiLlama, Uniswap v3, Aave v3), producing a 0-100 sentiment score and recording each report immutably on-chain via a Solidity contract.
X-platform Survival MMORPG w/ unique gameplay-mechanics & “inGame DeFi” (various payment methods & Yield Farm) to be “Self-Sustaining” economic, allowing players to earn through Player Supply & Demand
Kabon is an AI treasury copilot that helps users discover, evaluate, and allocate capital across fragmented DeFi and tokenized asset opportunities on Arbitrum.
Andromeda Core is a Verifiable Reputation Layer that transforms on-chain behavior into actionable TrustScores using the AVIP protocol. By utilizing Shannon Entropy for Sybil detection and asymmetric temporal decay, we provide the Arbitrum ecosystem with a tamper-proof infrastructure to audit contributor integrity and secure decentralized governance.
The BVCC Hook Analytics Dashboard — a full-stack Node.js + HTML application that scans all 4 networks (Arbitrum, BSC, Base, Ethereum) in real-time using eth_getLogs, discovers active pools
Private programmable finance for stablecoin cashflow, powering spending, credit, BNPL, and automated payments on PayFi rails.
Omniflow is an omnichain execution layer for DeFi. Today, cross-chain users must bridge assets, wait, switch networks, and manually interact with a destination protocol. Omniflow removes that friction by letting a user start from one source chain and trigger execution on a destination chain in a single flow. For the Arbitrum Open House Buildathon, Omniflow demonstrates a cross-chain liquidity launch flow powered by LayerZero V2 + compose. A user sends an OFT from a source chain, and the message triggers destination-side execution on Arbitrum, where liquidity can be created and seeded. This launchpad flow is a proof of execution, not the final product. The broader goal is to make cross-chain DeFi feel like one unified environment by turning cross-chain messages into protocol actions: liquidity launches, pool funding, vault deposits, and eventually AMM execution.
ANFT is a decentralized authorship-first digital painting marketplace where every artwork is painted within the platform and linked to the artist's Decentralized Identifier at the moment of creation where an attestation is registered on-chain, publicly and permanently recording who made the artwork, what it is, and when it was created, which placing verifiable, public authorship data on-chain so anyone can read and verify its authenticity without relying on any central authority.
CryptoMart is a Decentralized Amazon-like Platform but with crypto payments! 🚀
Autopay brings Stripe-level simplicity to crypto payments. Accept recurring or one-time crypto payments to gate digital products, services, memberships, or invoicing/ outbound payments. No custodial risk, No middlemen.
ClawLens is building the credit score for AI agents. Today, agents can use tools and make payments, but almost every action still requires upfront capital because there is no reliable way to assess agent risk. We solve this by creating a credit score and credit file for agents based on identity, behavior, and repayment history, helping lenders and infrastructure providers decide who to trust, how much credit to extend, and at what risk. Our first use case is enabling agents to access x402 endpoints on credit and settle later.
CardChase is a prediction market for trading card collectibles, enabling directional trading on future prices of cards & sealed product.