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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
M

Manjeet Sharma

india
Champion
16
No.1
R

Rick

California
Champion
16
No.2
D

DHRUV PANCHOLI

jaipur
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

ChainWard

ChainWard provides on-chain incident detection for Orbit. It records silent failures immutably, enabling auto-pausing bridges, enforced SLAs, and verifiable forensic proof of downtime.

Tech StackSolidity, Web3, Ethers, Node, Next, React
Builder
PPaschal Anierobi
InfraDeFiDAOOther

Hush

Brings private DeFi UX to Aave: shield funds, supply USDC, borrow WETH, repay, and withdraw back to private balance without exposing your strategy

Tech StackReact, Ethers, Node, Solidity, Vite, Foundry, Web3
Builder
MMike Krupin
DeFiOtherInfra

ETour

100% On-chain gaming. ETH only. Self-sustaining. Impossible to grief. Skill based. No tokens, no servers, no nonesense. https://etour.games/whitepaper

Tech StackSolidity, React, Web3, Ethers
Builder
EETour Games
GamingInfra

Apollos Finance

The Autonomous Hedge Fund System that Implement the Cross-Chain, LVR-Protected, & Linearized Yield Protocol.

Tech StackReact, Next, Web3, Ethers, Node, Solidity, Gemini AI, Chainlink
Builder
BBagas Rizki Gunardi
DeFiAIOther

ETour

I built the first 100% on-chain, ETH-in ETH-out (no new token), skill based competitive gaming platform. No tokens, no servers, no nonesense. https://etour.games/whitepaper

Tech StackSolidity, React, Web3, Ethers
Builder
EETour Games
GamingInfra

Snap'nInvest

Snap’nInvest lets users snap products and invest in tokenized stocks on Robinhood Chain.

Tech StackReact
Builder
TTekrox.eth /
SocialFiDeFi

DARX - ZK Dark Pool

Private Trading, Powered by Zero-Knowledge Proofs. Trade any token in size with zero price impact with crypto's first decentralized crossing network. Live today on Arbitrum Ecosystem.

Tech StackNext, Web3, Solidity, Circom , Groth16, SnarkJS, Express JS, Supabase
Builder
ZZaky Irsyad Rais
DeFi

Aurion Protocol

Aurion is a non-custodial credit layer that aggregates DeFi positions across Aave and Compound, enabling higher leverage through delegated credit guarantees.

Tech StackReact, Ethers, Solidity, Java
Builder
AAliyu Aliyu
DeFi

MERGE PROTOCOL

The decentralized execution layer for Web3 gigs. Merge Protocol replaces middlemen with smart contract escrow on Arbitrum, UI-assisted GitHub PR verification, and encrypted XMTP wallet chat. (191 char

Tech StackNext, React, Solidity, Ethers, Node
Builder
AAyanfeoluwa Grandeur
Infra

Formicarium

Formicarium is a decentralized platform where an AI agent coordinates a fleet of autonomous machines and robots to manufacture customized products.

Tech StackWeb3, Python, Solidity
Builder
NNejc Rožman
AIOther

GainJar

GainJar is a decentralized payroll streaming protocol that transforms salary from a monthly event into a continuous, real-time stream on the blockchain. Employees earn second by second and

Tech StackNext, Solidity
Builder
Ssyafiqsan
DeFi

Zeva

Zeva is an intelligent agentic system that manages your wealth on Arbitrum. We wanted to make DeFi as easy as sending a DM. With Zeva, you don't need to be a crypto expert to earn yield. You just tell Zeva what you want to do, and it executes the strategy for you. It’s secured by ZK-Email and your phone's biometrics, so you get the ease of a bank with the security of a hardware wallet.

Tech StackSolidity, React, Next, Web3, Node
Builder
SSeun Victor
InfraDeFiAI
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