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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
E

Edy Cu

Jakarta
Champion
1
No.1
c

chubbyzroxas

Champion
1
No.2
Y

Yayan Fauzi

Champion
1
No.3
Most Project Built
z

zorzalcripto

regencia
Champion
61
No.1
A

Amaan Sayyad

Navi Mumbai, India
Champion
34
No.2
A

Aaditya Rawat

Champion
29
No.3

Project Highlight

Project Highlight

EduBricks

EduBricks is a platform enabling fractional ownership of tokenized real estate, making investments more accessible

Champion

x

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

x

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

x

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

x

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

x

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

x

Arbitrum Open House India: Online Buildathon

Teserra

Index baskets of Robinhood Stock Tokens: fully backed in an on-chain vault, minted in kind, or bought with USDG.

Tech StackReact, Next, Solidity, Hardhat, Viem, OpenZeppelin, Arbitrum, Paxos USDG
Builder
RRohan Borade
DeFiRWAInfra

Phylax SDK

Institutional-grade control layer for autonomous AI agents, ERC-4337 smart accounts, delegated session keys, and centralized gas sponsorship to enforce secure, bounded, and verifiable on-chain.

Tech StackWeb3, Ethers, Solidity, Pimlico, Viem, Permissionless, ERC-4337, Phylax SDK
Builder
BBagas Rizki Gunardi
AIOtherInfra

Domino

Domino is an on-chain survival game on Robinhood Chain. Pick the stronger of two tokens each round and be the last player standing. Free-entry beta now; paid pools with stablecoin prizes are planned.

Tech StackWeb3, Node, React, Solidity, TypeScript, Viem, Foundry, OpenZeppelin
Builder
KKirill Shabalin
Gaming

Qanary

Quantum-safe treasury accounts for Arbitrum: NIST post-quantum signatures verified by Stylus, a capped classical hot key, and an on-chain Q-Day tripwire.

Tech StackSolidity, Rust, Next, Arbitrum Stylus, Post-Quantum Cryptography, ERC-4337, ZeroDev, AWS KMS
Builder
RRayyer
InfraDeFi

Hunch VPM

Prediction markets on Robinhood Stock Tokens that pay an early call more than a late one. UP or DOWN in USDG, settled by Chainlink, live on Robinhood Chain.

Tech StackSolidity, Next, React, Node, Web3
Builder
RRaj Karia
DeFiRWA

CanHav Research

CanHav helps builders go from idea to a live token or DeFi Project on testnet. Users plan a DeFi product with guided research, launch a token on testnet, and let AI agents read it all through MCP.

Tech StackNext, React, Solidity, Web3, Ponder, TypeScript, Foundry, MCP
Builder
WWazarat Hussain
InfraAIDeFiOther

Tabline

Open a tab, not an approval. Recurring and pay-per-use payments on Arbitrum, built on scoped, revocable wallet permissions instead of unlimited token approvals.

Tech StackNext, Node, Solidity
Builder
DDev Dee
Infra

OwnPay

Programmable payments where USDG can automatically become cash, savings, ownership or vested assets, with gasless execution, constrained agents and compliance controls

Tech StackReact, Web3, Solidity, Node
Builder
CChinyereugo Mebo
DeFiRWAAIInfra

pfwa.fun (updated)

PFWA is a permissionless prediction market protocol on Robinhood Chain. If an outcome has public data (crypto, stocks, sports or weather), anyone can create and trade a market on it.

Tech StackNext, Ethers, Solidity, React, Node, Web3
Builder
MMiracle Otugo
DeFiOtherInfra

Voltic

Voltic - a Kotlin/Jetpack Compose Android wallet for ethereum based on Arbitrum netwokr. Send ETH via QR or NFC tap-to-pay payment app

Tech StackSolidity, kotlin, Foundry
Builder
Nnizar al-7eet
DeFiOther

Novation

Options on Robinhood Chain stock tokens, cleared on-chain with portfolio margin computed in an Arbitrum Stylus kernel.

Tech StackSolidity, Rust, Next, React, Python, Arbitrum Stylus, Chainlink, Foundry
Builder
RRayyer
DeFiRWAInfraAI

Palissage

RWA platform for direct B2B wine trade, stablecoin settlement and physical redemption on Arbitrum and Robinhood Chain.

Tech StackReact, Web3, Node, Solidity, Foundry, TypeScript, Vite, Ethers
Builder
NNikita
RWADeFiNFT
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