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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

Arbitrum Web3 Learning Map

Arbitrum Web3 Learning Map is a gamified, interactive educational platform that guides complete beginners from having zero Web3 knowledge to confidently executing verified onchain actions.

Tech StackReact, Web3, Ethers, JavaScript, Solidity, Node
Builder
HHamed Karami
InfraDeFiGamingDAO

Data Racing Club

Data Racing Club is a physics bike racer where real market charts become race tracks: a pump is a ramp, a dump is a cliff. Ride BTC, Tesla or your own coin, with new tracks generated from live data every day. On-chain tournaments on Robinhood Chain pay out sponsor-funded prize pools to the best riders. No token, no pay-to-win, and it plays in your browser in seconds. Game: https://dataracing.club

Tech StackNext, Go, Web3, Solidity, Node, Ethers, Kafka, Postgres
Builder
LLion G
GamingSocialFiOther

Cova

Cova powers USDG payments for services with uncertain final prices: reserve an approved budget, settle a signed rate for session time, and release unused funds on Arbitrum.

Tech StackReact, Next, Web3, Solidity, Arbitrum, Foundry, wagmi, viem
Builder
RRakha Dhifiargo
InfraDeFi

CRUXMARK

A receipt-backed compatibility lab that shows protocol engineers how a stock-token integration behaves when corporate actions, price availability or sequencer recovery change its assumptions.

Tech StackSolidity, React, Foundry, TypeScript, Vite, Node, viem
Builder
UUser64bit
InfraDeFiRWA

Yield Pilot

A non-custodial yield vault on Robinhood Chain with a Qwen-powered AI agent that moves USDC between whitelisted strategies, inside limits the smart contract enforces.

Tech StackWeb3, Node, Solidity, Next, React
Builder
Hhq_1755086469
AIDeFi

Ranges Finance

NEW DEFI PRIMITIVE. Concentrated liquidity + Multipools. Deployed on Robinhood. $20K TVL.

Tech StackWeb3, Solidity
Builder
VVlad van Zuur
DeFiRWA

Tape

Copy trading for tokenized stocks, where every return is proven on-chain. Settled in USDG on Robinhood Chain, scored by a Rust engine on Arbitrum Stylus.

Tech StackReact, Web3, Rust, Next
Builder
RRohit Purkait
SocialFiDeFi

Gathaero

Trade your own flight on Arbitrum: scan your boarding pass, then hedge a delay or trade the arrival time. Settles in USDG from real arrival data. Passengers only, so outsiders can't game it.

Tech StackSolidity, React, Web3, Arbitrum, Foundry, Vite, zxing, PWA
Builder
YYouvandra Febrial
DeFiRWAOther

NairaFlow

Non-custodial savings circles (Ajo and Esusu) and goal vaults in stablecoins, with an agent that can only act inside limits you set and can be revoked in one click.

Tech StackReact, Next, Web3, Node, Solidity
Builder
RRaphael Uzoechi
DeFiSocialFiInfra

MAAT

One signature, zero bridges. Maat settles cross-chain transfers from Arbitrum via ZK proof. No wrapped tokens, no destination gas. Live on testnet today.

Tech StackSolidity, Rust, Web3, Next, Node
Builder
NNTH MOMENT
DeFiInfra

KillSwitch Wallet

Agentic Commerce with on-chain spend controls — agent discovers, quotes, and pays under a Session Key; the contract Guards; deny is recorded success

Tech StackWeb3, Solidity
Builder
HH Jiang
AIDeFi

STOCKBACK

Scan. Prove. Own.

Tech StackReact, Next, Web3, Ethers, Node, Java, Solidity, Rust
Builder
Aadodean
RWADeFiInfra
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