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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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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
59
No.1
R

Rick

California
Champion
44
No.2
A

Amaan Sayyad

Navi Mumbai, India
Champion
33
No.3

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

Stylus-English-Auction

English Auction is a decentralized NFT auction platform where sellers can list their NFTs and participants compete by placing progressively higher bids in ETH over a 7-day period. At the end of the auction, the highest bidder wins ownership of the NFT, while the seller securely receives the winning bid amount, with refunds available for non-winning participants.

Tech StackNext, Web3, Ethers, Node, Rust
Builder
KKrish Modi
NFT

Pharos Test

The goal of the Pharos Testnet is to build a robust and reliable foundation for the upcoming Pharos Mainnet, ensuring a seamless and secure user experience upon launch.

Tech StackReact, Web3, Ethers, Move, Rust, Node, Go, Python
Builder
MMan Nguyet
SocialFiDeFiDAO

Alloc8 Camelot Hedge

Alloc8 is an agentic asset allocation protocol that lets you programmatically delegate funds using smart accounts.

Tech StackSolidity, Next, Web3
Builder
SShivam Kalra
DeFiAI

tixets

we are excited to present a decentralized event ticketing platform built on EduChain Blockchain.

Tech StackReact, Next, Web3, Node, Ethers, Solidity
Builder
AAjey Awasthi
SocialFiInfra

Safe Work Pay

SafeWorkPay is a freelancing platform for IT projects and coding tasks. It uses Blockchain and AI technology to make sure clients and freelancers have a secure and fair experience.

Tech StackReact, Web3, Ethers, Node, Solidity, Arbitrum One, AI Agent, Hardhat
Builder
CCipher Hex
DeFi

MEGHA NETWORK

Recycle your OLD MOBILE DEVICES into AI AGENT HOSTS and earn $USDC. Join the DePIN Revolution!

Tech StackNext, Solidity, Web3
Builder
SSam Felix
AIInfraOther

QuikPay

QuikPay makes crypto payments instant, gasless, and as easy as scanning a QR code.

Tech StackSolidity, Next, React, Web3, Ethers
Builder
NNnenna Okoye
DeFi

Aristhrottle

Content sharing platform powered by Blockchain and AI to reward user attention through Attention Reward Token - $ART. Anonymous voting mechanism which rewards voter with 0.1 $ART and creator with 1 $ART. Leaderboard and milestones to add gamification. It is a movement to build the PLAN - Peoples' Language and Art Network.

Tech StackSolidity, Ethers, Python, Next
Builder
Aagent zero
SocialFiDeFiAI

NeuroX

Name: NeuroX Category: AI Integration + DeFi Excellence Tagline: "Smart contract auditing using neural networks in collaboration with staking for decentralized audits via manual auditing "

Tech StackNext, React, TypeScript, Tailwind CSS, Python, Node, Solidity, Ethers
Builder
AAkshat
AIDAODeFi

Chain Crush

ChainCrush is a Candy Crush-style puzzle game built as a Farcaster mini app, where every move can earn NFTs and crypto rewards. Already in Season 5 with thousands of users, it blends casual gaming with Web3 incentives on Arbitrum.

Tech StackNext, Ethers, Web3, Solidity, Move
Builder
AAnas Ali
Gaming

flabitrum

Flabitrum is not just another dApp — it’s a playground. We’re bringing back the raw fun of simple, addictive games and mixing it with the power of on-chain rewards. No confusing jargon, no boring dashboards — just instant fun, friendly competition, and provably fair outcomes secured by crypto rails. Whether you’re here to play, stake, or flex your streaks, Flabitrum gives you a reason to come back every day. Every tap, every choice, every move is on-chain — meaning your wins are yours to keep, trade, or show off.

Tech StackReact, Next, Web3, Solidity, Node, Ethers
Builder
HHarsh Shukla
Gaming

StableUPI

A payment solution that lets users pay via stablecoins directly from their crypto wallets, while merchants receive instant INR through UPI, bridging the gap between crypto and everyday payments.

Tech StackNext, Solidity, Web3, Ethers, Node, Express, REST APIs
Builder
Kkaushal desai
SocialFiOtherDeFi
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