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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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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

ArbiLink: Universal Cross-Chain Messaging Hub

A universal cross-chain messaging protocol that positions Arbitrum as the central hub for multi-chain communication, enabling developers to build once on Arbitrum and reach users on any blockchain.

Tech StackEthers, Solidity, Rust, WebAssembly (WASM), Arbitrum Stylus, Cross-chain messaging, viem, React
Builder
MMartins Oluwaseun Jojolola
InfraDeFi

Yield Pilot

Making DeFi yield accessible to the next billion — starting with Africa.

Tech StackReact, Solidity, Next, Python, Web3, Ethers, Node
Builder
GGodswill Idolor
DeFiAIInfra

Out of jail 808347

An AI-driven onchain interactive confession quest where self-exploration is the core mechanic.Out of Jail 808347 is a narrative Web3 quest built at the intersection of AI, music, and blockchain — designed for a worldwide audience

Tech StackWeb3, Ai, NFT, html, Ableton live, cj, ElevenLabs, Conversation Ai agent
Builder
MMike Freedom
GamingSocialFiAI

Yield Pilot

Making DeFi yield accessible to the next billion — starting with Africa.

Tech StackReact, Solidity, Next, Python, Web3, Ethers, Node
Builder
GGwill❤️‍🔥
DeFiAIInfra

SettlX

SettlX is a Web3 payment platform for global merchants in volatile markets like Nigeria. It lets them accept USDC and receive instant NGN settlements at a locked rate, eliminating FX risk completely.

Tech StackNext, Web3, Rust, Node
Builder
CChigozie Jacob
DeFi

ERC8004-SKILL

ERC8004 verifier for Agents and Humans on Arbitrum

Tech StackWeb3, clojurescript, markdown
Builder
CChristian Houy
AIInfra

ERC8004-SKILL

ERC8004 verifier for Agents and Humans on Arbitrum

Tech StackWeb3, clojurescript, markdown
Builder
CChris Houy
AIInfra

bitchat - dstealth

A private "offline-first" chat app with built-in Post-Quantum ethereum wallet. Sign transactions and broadcast them over bluetooth mesh network to find a peer connected online to relay it to a RPC.

Tech StackRust, Solidity, Swift, Helios, TOR, Dilithium , ML-DSA44, BLE mesh
Builder
TTantodefi
SocialFiDeFiInfra

Stylus Hardware Anchor (SHA)

Hardware identity primitive for Arbitrum Stylus — binding ESP32-S3 silicon to on-chain execution. Sybil-resistant DePIN verification without TEE or secure elements.

Tech StackRust, Python, Web3, Arbitrum Stylus
Builder
AArhant I Orthonode
Infra

Sentinel DAO

Sentinel DAO is an on-chain treasury firewall powered by Arbitrum Stylus. We prevent treasury hacks by enforcing dynamic risk policies and trust scores at the execution level using Rust logic.

Tech StackRust, Solidity, Web3
Builder
MMuhammad Naufal Satria
DAODeFiInfra

Repo Protocol

DeFi tokenized the asset side of finance but has no repo - the backbone of institutional funding. Repo Protocol brings title transfer and rehypothecation on-chain. The missing funding primitive.

Tech StackReact, Web3, Ethers, Node, Solidity
Builder
AAJ Park
RWADeFi

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
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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