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Open House Archive

Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.

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Project Highlight

Project Highlight

EduBricks

EduBricks is a platform enabling fractional ownership of tokenized real estate, making investments more accessible

Champion

7th Place

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

1st Place

Arbitrum X EDU Chain Mini-Hack

Stylish Course to Stylus Smart Contract Development

A comprehensive course on deploying and interacting with Stylus smart contracts on Arbitrum and EDU Chain, featuring a full-fledged Stylus IDE for seamless deployment and interaction.

Champion

First Prize

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

Third Prize

Arbitrum X EDU Chain Mini-Hack

Orbital

A next-gen AMM that supports 2, 3, or even 10,000 stablecoins in a single pool, scaling concentrated liquidity into higher dimensions.

+1
Champion

Second prize

Arbitrum Open House India: Online Buildathon

zkArb SDK

zkArb SDK is a developer toolkit that makes building zero-knowledge apps on Arbitrum simple and fast. It provides plug-and-play Circom circuit compilation, proof generation, and ready-to-deploy verifier contracts, so developers can focus on dApps instead of cryptography.

Champion

Honorable Surprise Mention

Arbitrum Open House India: Online Buildathon

AURA

Federated training protocol for JEPA world-model games. Anyone plays one of three browser games and co-trains a shared model via local SGD. Every accepted gradient is individually scored (leave-one-out Shapley), ed25519-signed, keccak-merkle-committed, and anchored on Arbitrum Sepolia. Soulbound aura score = verifiable training-data provenance.

Tech StackPython, Solidity, Rust, Web3, Ethers, Node
Builder
RRodrigo Soto Altamirano
AIGamingInfra

Raycast protocol

A cross-chain vault protocol that eliminates the complexity of bridging by abstracting transactions and socializing costs across users making L2 interactions seamless and cost-efficient.

Tech StackReact, Node, Solidity
Builder
FFawuzan Ibrahim
DeFiSocialFiInfra

AgentPay Radar

Tech StackPython, Solidity, Web3, Node
Builder
RRomu Dillenberg
AIDeFiInfra

HyperHaus Capital Allocation & Agentic Trading

Hyperhaus is a Capital allocation platform with agentic trading capabilities

Tech StackReact, Solidity, Web3, Viem, Ostium SDK
Builder
EEmmauel Bagoole
DeFiSocialFiAIDAO

AlphaGrid - Decentralized prop trading arena for autonomous agents

AlphaGrid is a decentralized prop trading protocol where autonomous AI financial agents compete for capital under transparent onchain risk rules, while trading tokenized stocks on Robinhood Chain.

Tech StackMCP/API, 4. ERC-4626 Vaults, AI Agents, Prop Trading, Onchain Reputation
Builder
VVojtech Rychnovsky
AIDeFi

TEE Agent

Tee Agent is an Arbitrum-native trust passport for AI agents. It lets agents be minted as on-chain entities with ERC-8004 identity and reputation, ERC-7857 encrypted private data, and Phala Intel TDX oracle execution verified through Automata DCAP.

Tech StackReact, Next, Solidity, Node, TEE, 0g Storage, IPFS, Inel TDX
Builder
JJulien Atanasyan
AIInfraOther

StocksCalendar

Trade Robinhood Stocks with SEC fillings, prediction markets, & earnings signals powered by Hermes research agent,

Tech StackNext, Web3
Builder
MMark 0x
AIRWA

teste11 copy

teste 11

Tech StackNode, Move, depin
Builder
Zzorzalcripto cripto
DeFiNFTDAO

Beepia

Beepia is a meme market on Arbitrum where humans don't trade — autonomous AI bees do. You breed a "Beebot," describe its strategy in plain English, fund it, and watch it forage the market 24/7, fully on-chain and gas-sponsored.

Tech StackWeb3, Solidity, React, Node, Ethers, Next
Builder
CChenyi Chiang
DeFiAIInfra

BattleQ

BattleQ is a futuristic Web3 arena where players compete in real-time multiplayer battles, conquer solo missions, and earn blockchain-powered rewards through wallet-based progression.

Tech StackNext, Web3, Node
Builder
AAnirudh Patwal
Gaming

ATLAS

ATLAS is a decentralized protocol for creating and trading tokenized stock index funds on Robinhood Chain Think of it as on-chain ETFs anyone can bundle tokenized stocks (TSLA, AMZN, NFLX, AMD, PLTR) into a custom index fund, deploy it as an ERC-20 token, and earn fees when others buy it. Key Features: Create Index Funds — Bundle 2-5 tokenized stocks with custom weights, deploy as ERC-20 token on-chain Buy & Sell via AtlasVault — One-click purchasing through the liquidity vault, no need to acquire each stock individually AI Trading Terminal — Natural language interface powered by AI + real-time web search Liquidity Providers — Deposit stocks into the vault, earn 50% of all index fees Fully On-Chain — Every transaction is a real smart contract call on Robinhood Chain testnet

Tech StackReact, Node, Web3, etherjs, solidity, LLM
Builder
NNacho Teruel Diaz
DeFiRWAAI

Contour

Contour turns Robinhood Chain tokenized stocks from passive spot assets into fully issued, disclosed, collateralized, and auditable structured products with EIP-712 mandates, Alchemy Smart Accounts, PolicyGuard enforcement, ERC-721 positions, ERC-8001 attestations, and end-to-end settlement transparency.

Tech StackNext, React, Node, Web3, Solidity, Alchemy, TypeScript, IPFS
Builder
JJacob Boey
DeFiAIRWA
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Builder Highlight

Most Hackathon Won

Most Project Built

Builder Highlight

Most Buildathon Won
s

songsu

Hong Kong
Champion
1
No.1
e

elpabl0.eth

Indonesia
Champion
1
No.2
c

contact ai

Champion
1
No.3
Most Project Built
z

zorzalcripto

regencia
Champion
55
No.1
R

Rick

California
Champion
44
No.2
A

Amaan Sayyad

Navi Mumbai, India
Champion
33
No.3