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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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By ProjectBy Buildathon
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Builder Highlight

Most Hackathon Won

Most Project Built

Project Highlight

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
z

zorzalcripto

regencia
Champion
51
No.1
z

zcy22606

chengdu
Champion
26
No.2
D

David Barasa

Kenya
Champion
19
No.3

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

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 Aʟɪ
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

dapps.co

Invest in communities like stocks (think reddit meets pump.fun)

Tech StackReact, Web3, Ethers, Node, Solidity, Python
Builder
MMohit Madan
SocialFiDAO

Lobstar

Good project

Tech StackReact, Ethers, Java, Solidity, Node
Builder
HHasn Khan
InfraDAORWA

Orbital

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

Tech StackSolidity, Rust, Next, Node
Builder
YYash Agrawal
InfraDeFi

Lobstar

Good project

Tech StackReact, Ethers, Java, Solidity, Node
Builder
MMamun Khan
InfraDAORWA

TempWallets

TempWallets are disposable temporary wallet technology. It allows Degens to connect to risky DApps or receive crypto anonymously. Users can generate temporary wallets deterministically from their Metamask signatures.

Tech StackEthers, React, Vue, Web3, Node, Next, Nestjs, TypeScript
Builder
RRahul Pandey
InfraDeFiOther

StreamPay

A Stylus-powered recurring payments protocol on Arbitrum One, enabling automated subscriptions and payouts with Gelato.

Tech StackRust, Web3, Typescript
Builder
VVipul Yadav
InfraDeFi
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