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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 Buildathon Won
M

Manobendra Mandal

Kolkata, India
Champion
3
No.1
V

Vivek Sahu

India
Champion
2
No.2
s

simp1e

china
Champion
2
No.3
Most Project Built
M

Manjeet Sharma

india
Champion
16
No.1
R

Rick

California
Champion
16
No.2
D

DHRUV PANCHOLI

jaipur
Champion
15
No.3

RealBot

Trustless DeFi trading agent verification using STARK proofs on Arbitrum Stylus. Generates browser-side STARK proofs of Sharpe ratio from real GMX V2 trades and verifies them on-chain — no trusted set

Tech StackWeb3, Next, Rust, DeFi, ARB, Solidity
Builder
JJinu Kim
DeFiInfra

VibeBlock

Turn any idea into a deployed crypto product in 10 seconds. Smart contract + frontend + audit, auto-generated. End users see dollars and buttons, never wallets or gas.

Tech StackReact, Web3, Solidity, Ethers, Arbitrum, LayerZero, ZeroDev, Alchemy
Builder
PPhilip Yoon
AI

Equity Financing for Prime Brokers : using Repo

On-chain equity repo on Robinhood Chain. Basket collateral, title transfer, rehypothecation with SEC 140% cap enforced on-chain. Wall Street's $4T/day financing primitive, built for DeFi.

Tech StackSolidity, React, Ethers, Node, Web3
Builder
JJI HOON PARK
RWADeFiInfra

Equity Financing for Prime Brokers : using Repo

On-chain equity repo on Robinhood Chain. Basket collateral, title transfer, rehypothecation with SEC 140% cap enforced on-chain. Wall Street's $4T/day financing primitive, built for DeFi.

Tech StackSolidity, React, Ethers, Node, Web3
Builder
AAJ Park
RWADeFiInfra

GonnaMakeIt

A new DeFi primitive: Locked liquidity marketplace. Permanent liquidity for Arbitrum and the whole ecosystem. High yields + full tradability/exit flexibility for users. Live on Arbitrum & Apechain.

Tech StackReact, Next, Web3, Ethers, Node, Java, Go, Solidity
Builder
MMansi
DeFiNFTInfra

Longbow

Perp dex for humans and agents on Robinhood chain.

Tech StackNext, React, Solidity
Builder
IIgor Yuzovitskiy
DeFi

GridPay - The First DePIN Energy Exchange on Arbitrum

The first company in history to autonomously mint a cryptocurrency token from a real home's solar energy export. Live on Arbitrum One. March 5, 2026.

Tech StackNext, Web3, Ethers, Node, Solidity, Python
Builder
DDevan Webb
RWA

ChainCraft

An AI multiplayer game builder and creator infrastructure.

Tech StackReact, Web3, Next, Node, Solidity
Builder
RRyan Beltran
GamingAIInfraNFT

Aspens Protocol

Direct Crosschain Trading Pairs

Tech StackWeb3, Rust, Solidity
Builder
SScott Tuddenham
DeFi

Aspens Protocol

Direct Crosschain Trading Pairs. Make your own direct crosschain market for any tokenized assets.

Tech StackWeb3, Rust, Solidity
Builder
SScott T
DeFi

FreeTurtle

FreeTurtle deploys autonomous ai agents that run onchain businesses. We call them ceos. They don't sleep, don't burn out, and they think out loud.

Tech StackSolidity, Node, viem
Builder
MMatt Lee
AIRWA

Jarvis

Jarvis powers stablecoins for trade finance. Automate custom contract payment terms and tap into instant liquidity.

Tech StackSolidity, React, Next, Ethers, Typescript
Builder
AAkhil Maheepathi
OtherDeFiRWA
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Project Highlight

Project Highlight

EduBricks

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

Champion

7th Place

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

1st Place

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

First Prize

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

Third Prize

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

Second prize

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

Honorable Surprise Mention

Arbitrum Open House India: Online Buildathon