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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

Launchboard

An OwnershipOS that brings $10T+ of private company stock onto Robinhood chain.

Tech StackReact, Solidity, Node, Java, Web3
Builder
HHarish Suthi
RWAAI

Contour

Contour turns Robinhood Chain tokenized stocks from passive spot assets into fully issued, disclosed, collateralized, and auditable structured products with EIP-712 mandates, Alchemy Smart Accounts, PolicyGuard enforcement, ERC-721 positions, ERC-8001 attestations, and end-to-end settlement transparency.

Tech StackNext, React, Node, Web3, Solidity, Alchemy, TypeScript, IPFS
Builder
CChloe W
DeFiAIRWA

SpeakUp

SpeakUp gives every on-chain shareholder a voice. Three specialized Anthropic agents (Reader, Advisor, Executor) read the full SEC proxy filing, weigh your preferences against ISS and Glass Lewis, and turn one signature into on-chain attestations on Robinhood Chain. Closes the 70% retail-shareholder voting gap before 50M Robinhood users come on-chain through tokenized stocks.

Tech StackNext, React, Ethers, Web3, Node, Solidity
Builder
BBill
DAOAI

Silent Swap

Silent Swap is a private trading protocol for buying and selling ERC20. It supports x402/MPP standards for private agentic payments and swaps.

Tech StackSolidity, Rust, React
Builder
Ddainty jogger
AIDeFi

AI Studio

แอปพลิเคชันนี้เป็นระบบที่สร้างขึ้นบน Google Cloud Run (สังเกตจากโดเมน .run.app) เพื่อทำหน้าที่เป็น AI Studio ในการพัฒนาหรือทดสอบแอปพลิเคชันปัญญาประดิษฐ์ (AI) ครับสาเหตุที่คุณเห็นข้อความในหน้าเว็บ เป็นเพราะระบบความปลอดภัย

Tech StackWeb3, React
Builder
พพลวัต ลักขษร
GamingAI

Vela

Vela is a stock-collateralized credit line on Robinhood Chain — borrow USDG against your tokenized stocks, no selling, keep the upside. The Helmsman AI agent guards every position from margin calls.

Tech StackNext, Web3, Solidity, Node
Builder
AAyush Singh
DeFi

Tori

TORI — An onchain AI ego arena on Arbitrum. An arrogant AI guards a growing ETH prize pool. Players pay 0.001 ETH per message to psychologically attack him. Destroy his ego completely to win everythin

Tech StackSolidity, Web3, Ethers, Node
Builder
AAnkita Dixit
GamingAIDeFi

PulsarFi

PulsarFi - 1:1 Asset-Backed Indonesian Equity (IDX) Tokenization

Tech StackWeb3, Go, React, Next, Solidity
Builder
HHafiidh Luqmanul Hakim
DeFiRWA

Puppet

Puppet is a wallet for traders (humans or agents) to operate across chains and DeFi venues, and a platform where investors back them under co-attested funding rules.

Tech StackSolidity, Web3, aelea, viem
Builder
Bburnz it
SocialFiDeFiOther

EquiFlow

Your tokenized stocks, now collateral. Borrow USDG against TSLA, AMZN, PLTR on Arbitrum — no selling, no taxable events, one-click pledge via smart wallets.

Tech StackReact, Next, Solidity
Builder
MMDlog -
DeFiInfraRWA

Giggy

Giggy is the future mission/gig based marketplace for agents and humans. Fiverr for the future.

Tech StackRust, Tailwind, AWS, Next.js 16 + wagmi v3 + viem, solidity + foundry, Java, Typescript + CSS
Builder
KKenny Johns
OtherAIInfra

Fiat-to-Crypto Payment Processing

The Fiat-to-Crypto Payment Processing Protocol(PPP) is a payment system that enables buyers to purchase blockchain related digital assets or services with credit cards while sellers receive stablecoin payments.

Tech StackSolidity, Ethers, Javascript, Foundry
Builder
MMihai Hanga
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