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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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All Projects

By ProjectBy Buildathon
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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
R

Rick

California
Champion
16
No.1
D

DHRUV PANCHOLI

jaipur
Champion
15
No.2
H

Hendrix Iphonk

Surabaya, Indonesia
Champion
15
No.3

AquaFlow

One-Click Unified Liquidity: Flow Seamlessly Across Arbitrum's Universe

Tech StackSolidity, Next, React, Web3, Ethers, Node
Builder
AAaditya Rawat
InfraDeFiAI

Crowdfunding-dApp-Demo

End-to-End Crowdfunding dApp Demo

Tech StackNode, Vue
Builder
Hhq_1759148490
SocialFiDeFi

tetris.rs

A Tetris demo written in Rust under 500 lines of code

Tech StackRust
Builder
YYuze Hao
Gaming

Funmoney

A Rock, Paper, Scissors game to onboard newbies to web3

Tech StackReact, Next, Node, Web3, Ethers, Solidity
Builder
OOpeyemi Afolabi
DeFiGamingSocialFi

StylusForge

A complete Arbitrum Stylus ecosystem: browser IDE for zero-setup development, interactive tutorials with NFT badges and Onchain voting marketplace where developers showcase projects to attract funding

Tech StackReact, Next, Node, Web3, Ethers, Rust, Solidity, Python
Builder
KKamwanga Raheem
InfraDeFiAI

Arbitrum-Gas-Music

A demo to transform real gas prices on the Arbitrum blockchain into music + spectrum visualization + NFT metadata.

Tech StackReact, Web3
Builder
4466105869
NFTInfra

TangoH

TangoH gives students a direct channel to report school issues, ensuring every complaint gets tracked and resolved.

Tech StackReact, Rust, Solidity, Ethers, Vite, Web3
Builder
BBello Bambo
DAODeFi

Pundle

Option-based Collateral protection

Tech StackReact, Web3, Ethers, Stylus, Solidity, Rust, Node
Builder
Hhq_1756008157
DeFi

Service Ledger

Decentralized voucher marketplace connecting local businesses with customers

Tech StackNext, Web3, Ethers, Solidity
Builder
Aabhishek Singh
DeFiNFTRWA

ArbitPy

The first Python-to-blockchain compiler. Write familiar Python, compile to Solidity or Rust, deploy smart contracts instantly

Tech StackReact, Web3, Ethers, Python, Rust, Solidity, Node, Core
Builder
RRohan Kumar
InfraDeFiAI

Chrono Valley

A Stardew Valley-inspired gamified social journaling DApp on Arbitrum. We combine pixel-art RPG aesthetics with SocialFi mechanics, allowing users to plant on-chain memories and tip others with ETH.

Tech StackReact, Web3, Ethers, Solidity
Builder
Cclaim
SocialFiGaming

proplex

Proplex is a decentralized RWA platform on U2U Network enabling secure, compliant fractional ownership of real-world assets with sub-second finality and low fees.

Tech StackReact, Web3, Ethers, Solidity, Node, Next
Builder
GGaurav Kumar
RWADeFi
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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