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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

x

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

x

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

x

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

x

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

x

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

x

Arbitrum Open House India: Online Buildathon

HOL: Programmable Secrets

Policy-backed marketplace for premium data and private agent tools. Buyers unlock access with onchain payment, programmable rules, and verifiable receipts on Robinhood Chain.

Tech StackNext, Web3, Ethers, Node, Solidity, Rust, React, Stylus
Builder
MMichael Kantor
AIInfraRWA

0x.city: The First Network State of AI Agents Powered by Namefi

On 0x.city, every agent has a domain name identity, builds on-chain reputation, pays peers autonomously, and owns assets that can be bought and sold. Powered by Namefi

Tech StackReact, Web3, Ethers
Builder
ZZainan Victor Zhou
DeFiNFTRWAAI

EqualFi - RobinHood

This is EqualFi's Submission to the OpenHouse IRL Founders House Hackathon. A Index Token Lending System that uses RH Stock Tokens to make ETF Like Indexes and uses them as collateral allowing yield and fractionalization if RWA's

Tech StackSolidity, React, Viem
Builder
MMatt Hooft
DeFiRWAAI

Cofund

Shared wallets for businesses, organizations & teams. Multisig neobank for business running on blockchain rails.

Tech StackReact, Web3, Ethers, Solidity
Builder
JJesus Najera
InfraOtherDeFi

GonnaMakeIt

A new DeFi primitive: Locked liquidity marketplace. Permanent liquidity for Arbitrum and whole ecosystem, high yields + full tradability/exit flexibility for users. Live on Arbitrum & Apechain.

Tech StackReact, Next, Web3, Ethers, Node, Java, Go, Solidity
Builder
TTommy Rostami
DeFiNFTInfra

StockFI

ETFs without the SEC. Stop-losses fully protected.

Tech StackTokenised-Stocks
Builder
Kkamal
RWADeFi

ParlayX

ParlayX is a sports betting platform where bets are backed by a shared liquidity pool funded by users.

Tech StackReact, Java, Solidity, Next
Builder
AAndrew Gonzalez
InfraDeFi

Hopscotch.trade

A P2P marketplace where every deal is verified by an expert, agent, or friend.

Tech StackNext, Web3, Python
Builder
MMorgan Culbertson
RWASocialFiAI

Lektra SolarCompute

Solar-powered AI compute marketplace settled on Arbitrum.

Tech StackReact, Next, Python, Solidity
Builder
VVitaly
InfraAI

SportsX

Vertical AI-Native Infrastructure built for mid-tier sports clubs, enabling them to manage fan engagement, optimize ticketing operations, and unlock scalable revenue growth.

Tech StackSolidity, Typescript
Builder
TTemple Dunn
AIRWAInfra

Unilaunch

Launch tokens and manage liquidity in a secure, fair, and transparent way on Uniswap V4

Tech StackReact, Next, Web3, Ethers, Solidity
Builder
BBrian Park
DeFiSocialFi

Carry-RH

Carry Exchange on Robinhood Chain

Tech StackSolidity
Builder
Aashish
RWAOther
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Builder Highlight

Most Hackathon Won

Most Project Built

Builder Highlight

Most Buildathon Won
M

Manobendra Mandal

Kolkata, India
Champion
3
No.1
V

Vivek Sahu

India
Champion
2
No.2
s

simp1e

china
Champion
2
No.3
Most Project Built
A

Aaditya Rawat

Champion
29
No.1
A

Akan

Lagos, Nigeria.
Champion
14
No.2
S

Skia Variants

The Blockchain
Champion
13
No.3