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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

Hyperalloy

Hyperalloy pools tokenized real-world assets that sit idle into a single basket token, HALLOY. Users deposit assets (real estate and gold in the prototype), receive HALLOY minted by the USD value they contributed, and can redeem it any time for their proportional share of the vault. Live on Arbitrum Sepolia.

Tech StackWeb3, Solidity, Ethers, Arbitrum , HTML , CSS , JavaScript , OpenZeppelin
Builder
PPromise Azebiri
DeFiRWAOther

ArbiScore

On-chain credit scores that lower your collateral: a Rust risk model on Arbitrum Stylus, with lending markets in Paxos USDG and test USDC that price every loan from your repayment history.

Tech StackRust, Solidity, Next, React, Ethers, Python, Stylus, Chainlink
Builder
OOlamileye Clement Duduyemi
DeFiInfra

Sherwood

Programmable downside protection for stock tokens on Robinhood Chain. Choose your floor, pay a fixed premium, and keep the upside while your downside is protected.

Tech StackSolidity, React, Next, Web3
Builder
MManass Kusko
RWADeFiInfra

PayZoll Finance

PayZoll is a cross-border payments platform that enables individuals to get paid and businesses to pay teams, contractors, and vendors globally. It operates on a dual-rail model, supporting both fiat and stablecoin transactions.

Tech StackReact, TypeScript, Vite, Tailwind CSS, Node, Express.js, MongoDB, Arbitrum
Builder
VVaibhav Panwar
OtherDeFi

RentalRide

AI Agent for verifiable car rental search powered by Arbitrum Stylus — ranking 100+ vehicles by 7 weighted criteria on-chain.

Tech StackWeb3, Solidity, Rust, Java, Stylus
Builder
GGreg Alex
RWAAI

AIFP-4 Mesh — Agentic Financial Network

AIFP-4 Mesh is a decentralized financial network enabling autonomous AI agents to securely communicate, verify identities, and execute programmable crypto and fiat payments across blockchain and banking infrastructure.

Tech StackReact, Web3, Ethers, Python, Next, Rust, Node, Solidity
Builder
AAi FinPay
AIOther

Gapguard

A Uniswap v4 hook that prices the hours the stock market is closed, so LPs on tokenized stocks get paid for the weekend gap.

Tech StackSolidity, Web3
Builder
DDavid Corey
DeFiRWAInfra

ZEUS GUARD — Pre-Transaction Firewall for Everyday Traders.

Pre-transaction firewall for everyday traders on Robinhood Chain: blocks drainers, revokes risky approvals, shields USDG payments. Risk engine validated on real IBM Quantum hardware.

Tech StackSolidity, Python, Node, Rust, Hust, Arbitrum, Stylus
Builder
CClebson Campos de Araújo
InfraAIDeFi

InvoiceFence

One obligation. One payment. Human-approved invoice settlement shared by independent executors, with verified Arbitrum-chain testnet payment and duplicate rejection.

Tech StackReact, Ethers, Node, Solidity
Builder
LLee Long
Infra

batpilot

Your US stocks, managed while you sleep

Tech StackReact, Web3, Node, Solidity, Rust
Builder
KKiter
RWADeFi

KIZO

We're building KIZO, an anime PFP collection on Robinhood Chain. Right now we're working on letting holders stake their NFTs to earn our own token, $KIZO.

Tech StackJava, Web3
Builder
JJoseph Aderibigbe
NFT

Archer Markets

Fully collateralized Stock Token options with an onchain orderbook, built on Robinhood Chain Testnet.

Tech StackReact, Web3, Node, Solidity, Typescript
Builder
NNacho fq
DeFiRWA
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