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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
s

songsu

Hong Kong
Champion
1
No.1
e

elpabl0.eth

Indonesia
Champion
1
No.2
c

contact ai

Champion
1
No.3
Most Project Built
z

zorzalcripto

regencia
Champion
55
No.1
R

Rick

California
Champion
44
No.2
A

Amaan Sayyad

Navi Mumbai, India
Champion
33
No.3

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

Decentralized Lottery

A provably fair, decentralized lottery on Arbitrum with Chainlink VRF, staking mechanics, and sustainable tokenomics for long-term engagement.

Tech StackReact, Web3, Solidity, Node, Arbitrum, Javascript
Builder
Nnnaemeka agwara
DeFiGaming

Hush

Brings private DeFi UX to Aave: shield funds, supply USDC, borrow WETH, repay, and withdraw back to private balance without exposing your strategy

Tech StackReact, Ethers, Node, Solidity, Vite, Foundry, Web3
Builder
MMike Krupin
DeFiOtherInfra

Cassa

Cassa is a new deterministic on-chain infrastructure that turns risk into liquid, tradable markets.

Tech StackSolidity, React, Vue, Ethers
Builder
FFrancesco Mangia
DeFiInfraRWA

Cassa

Cassa is a new deterministic on-chain infrastructure that turns risk into liquid, tradable markets.

Tech StackSolidity, React, Vue, Ethers
Builder
LLuca "MajeStyle" Bernardi
DeFiInfraRWA

ArrowHead Protocol

Verifiable Sequencer Latency Profiling for High-Frequency DeFi & RWA on Robinhood Chain.

Tech StackSolidity, Python, Web3, Node
Builder
ZZEMMEI IIZUKA
DeFiInfra

ArrowHead Protocol

Verifiable Sequencer Latency Profiling for High-Frequency DeFi & RWA on Robinhood Chain.

Tech StackSolidity, Python, Web3, Node
Builder
ゼゼッティーチャンネル
DeFiInfra

Colateral-X

Unlocking $1.8T in SME liquidity via Arbitrum Stylus. The first RWA lending protocol with a Rust-based Risk Engine, offering 99% gas savings for micro-loans in LATAM.

Tech StackRust, Solidity, Next, React, Vue, Ethers, Web3
Builder
LLucas Jim Cifuentes Buigley
RWADeFiInfraDAO

Colateral-X

Unlocking $1.8T in SME liquidity via Arbitrum Stylus. The first RWA lending protocol with a Rust-based Risk Engine, offering 99% gas savings for micro-loans in LATAM.

Tech StackRust, Solidity, Next, React, Vue, Ethers, Web3
Builder
LLucas Cifuentes
RWADeFiInfraDAO

Paxr

The decentralized, privacy-first ticketing platform that ends scalping and ticket fraud while giving fans real ownership and social features.

Tech StackReact, Web3, Ethers, Solidity
Builder
MMoses Sunday
SocialFiNFTRWA

Impulse (Connect social causes with Crypto)

Impulse was born from a simple idea: anyone should be able to change the world with a single tap. Our mobile app connects people with social causes they care about and allows them to support those initiatives using crypto — instantly, transparently, and without intermediaries. Whether it's helping families, rescuing animals, protecting the environment, or improving local communities, Impulse gives everyone the power to take action and create real impact. Because small contributions, when combined, can transform entire communities.

Tech StackSolidity, Flutter, Firebase
Builder
JJulio Gaviria
SocialFi

EarnXprotocol arbitrium

African Trade Finance on Arbitrum Built on Arbitrum Powered by Pyth Lending by Silo Testnet Live Closing Africa's $120B trade finance gap through tokenized agricultural invoices on Arbitrum

Tech StackReact, Solidity, Next
Builder
GGodswill Idolor
DeFiNFTRWA

EarnXprotocol arbitrium

African Trade Finance on Arbitrum Built on Arbitrum Powered by Pyth Lending by Silo Testnet Live Closing Africa's $120B trade finance gap through tokenized agricultural invoices on Arbitrum

Tech StackReact, Solidity, Next
Builder
GGwill❤️‍🔥
DeFiNFTRWA
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