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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

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

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

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

Signaltrace Treasury

SignalTrace Treasury is a policy-enforced treasury for onchain teams, combining deterministic spending rules, evidence-based AI investigation, and smart-contract settlement on Arbitrum.

Tech StackNext, React, Solidity, Web3, Node
Builder
RRifan
AIDeFiInfraDAO

Inferest

Deposit USDC into a yield vault that stays in your wallet. Only the interest it earns becomes LLM credit, issued as spend limits on keys for your developers and agents.

Tech Stack
Builder
은은성준
DeFiAI

Kinfolio

A family trust for your stock tokens, without the lawyer. No escrow, one-tap veto, zero admin keys.

Tech StackSolidity, Next, React, Web3, Foundry, Wagmi/viem, Chainlink, USDG
Builder
MMusa Etudaye
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