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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
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

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

Impulse (Connect social causes with Crypto)

Impulse was born from a simple idea: anyone should be able to change the world with a single tap. Our mobile app connects people with social causes they care about and allows them to support those initiatives using crypto — instantly, transparently, and without intermediaries. Whether it's helping families, rescuing animals, protecting the environment, or improving local communities, Impulse gives everyone the power to take action and create real impact. Because small contributions, when combined, can transform entire communities.

Tech StackSolidity, Flutter, Firebase
Builder
JJulioce98
SocialFi

FLIBBER

Flibber is the world’s first scam-resistant DeFi ecosystem that fixes three massive pain points in decentralized finance: inefficient bridging, scam-heavy fiat on/off-ramps, and low-quality NFT floods

Tech StackReact, Web3, Solidity, Rust
Builder
XXBT
InfraDeFiAINFT

PingPay

PingPay: AI-native money app on Arbitrum. Pay, Sweep, or Invest — all from chat.

Tech StackNext, Node, Solidity, Python, React, Ethers, SQLite
Builder
BBanks
DeFiAISocialFi

ChainCraft

An AI multiplayer game builder and creator economy.

Tech StackReact, Web3, Next, Node, Solidity
Builder
BBucho - Ryan
GamingAISocialFi

Payrium Wallet

Payrium is building a utility-first wallet with token-gated governance (DAO), designed for everyday users and long-term community ownership.

Tech StackWeb3, Solidity, React, Ethers, DAO backend, Voting, Encryption
Builder
Hhq_1770803199
DeFiDAO

Payo

Send crypto to Telegram users who've never touched a wallet.

Tech StackReact, Next, Web3, Ethers, Node, Rust
Builder
RRama
SocialFiDeFi

life-vault

LifeVault is a non-custodial inheritance and savings protocol built on Arbitrum Sepolia using Arbitrum Stylus (Rust).

Tech StackReact, Next, Rust, Web3, arbitrum stylus
Builder
OOpe Ayeni
DeFi

StylusArena

StylusArena gamifies DeFi education. Players train AI agents through gameplay—no coding required. Agents deploy as Stylus contracts on Arbitrum, ready to execute real trading strategies autonomously.

Tech StackReact, Next, web3, Solidity, Rust
Builder
IIrham
DeFiGamingAI

Wrap-Up-Arbitrum

Wrap-Up: The verifiable web's intelligence layer. Curate articles with AI, access smart summaries, and earn rewards for building a transparent, community-owned news ecosystem.

Tech StackReact, Web3, Ethers, Node, Solidity
Builder
DDaksh Thakran
SocialFiRWAAI

perpX

perpX is a decentralized leveraged trading protocol that reimagines perpetual futures by introducing forced expiry and outcome-based settlement.

Tech StackReact, Next, Web3, Ethers, Rust, Arbitrum, Stylus, Node
Builder
AAman Jha
DeFi

Seturan FI

A permissionless cross-chain lending protocol powered by LayerZero and built for composability on Arbitrum

Tech StackSolidity, Web3, Next, Ponder, LayerZero, Cross-chain, Arbitrum, Foundry
Builder
Rruina ventura
DeFi

stylus-ide

Build, Test, AI Integrated and Deploy Smarter with "npm i create-stylus-ide". Create New Files or Load from GitHub or Interact with On-Chain Contracts.

Tech StackNext, Web3, Rust, Node
Builder
AAaditya Srivastava
Infra
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