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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
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
A

Akan

Lagos, Nigeria.
Champion
14
No.1
R

Rinat

Russia
Champion
3
No.2
D

Doraking

Champion
3
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

Equity for Everyone

Invest in startups tiktok style

Tech StackSolidity, Next, React
Builder
Jjohn
DeFiRWASocialFi

Fangorn Founders House

Fangorn is a programmable data layer for the agentic web. In this demonstration it is used to facilitate private computations via fully homomorphic encryption behind the x402 payment required protocol

Tech StackWeb3, Node, Solidity
Builder
CColeman
DeFiInfraAI

HyperOdd

We're building prediction market infrastructure that powers leveraged prediction market trading like margin or parlays for existing prediction markets with a capital-efficient solvency model

Tech StackReact, Web3, Solidity, Node, Ethers, Next.js, Foundry, Viem
Builder
PPriom Chowdhury
AIDeFiRWA

Robinhood Chain AI Trading Copilot

Robinhood Chain Autonomous Trading Copilot is lets a user connect their wallet on the Robinhood Chain testnet, inspect holdings (TSLA, PLTR, AMZN, NFLX, AMD), and run AI agent to execute autonomously

Tech StackNext, Solidity
Builder
VVivian Peng
DeFiRWA

HOL: Programmable Secrets

Policy-backed marketplace for premium data and private agent tools. Buyers unlock access with onchain payment, programmable rules, and verifiable receipts on Robinhood Chain.

Tech StackNext, Web3, Ethers, Node, Solidity, Rust, React, Stylus
Builder
MMichelle Baez
AIInfraRWA

coldvision

Coldvision is the intelligence and execution layer for prediction markets, real-time analytics, whale tracking, and trade execution in a single terminal.

Tech StackReact, Web3, Ethers
Builder
MMichael Zoubkoff
Other

ParlayX

ParlayX is a sports betting platform where bets are backed by a shared liquidity pool funded by users.

Tech StackReact, Java, Solidity, Next
Builder
AAndrew Gonzalez
InfraDeFi

Capacitr

Capacitr is an idea launchpad where creators launch concepts with a prompt, AI agents and experts do the work, and everyone earns compounding ownership as it grows.

Tech StackSolidity, Next, Web3, React
Builder
SSigala Fosam
DAODeFiAI

disintermedia

We’re automating revenue collection and distribution for film—so cast, crew, and investors get auditable, tradable shares instead of waiting years for a check that may never come.

Tech StackReact, Web3, Node, Solidity
Builder
Aaleeza howitt
DeFiRWAOther

coldvision

Coldvision is the intelligence and execution layer for prediction markets, real-time analytics, whale tracking, and trade execution in a single terminal.

Tech StackReact, Web3, Ethers
Builder
MMichael
Other

Creative Pixels

Creative Pixels is a real-time AI video workstation on Arbitrum that turns creative styles into tradable IP.

Tech StackReact, Web3, Typescript, Ethers, Viem, Solidity, Rust
Builder
GGawain Bracy II
SocialFiAIRWA

AuctionSwipe

Swipe-first live auction marketplace on Robinhood Chain with real-time bidding, admin controls, analytics, and an auto-bid agent.

Tech StackReact, Next, Web3, Ethers, Node, Solidity, AI, Robinhood
Builder
SSoulemane Sow
SocialFiDeFiNFTAI
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