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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
z

zorzalcripto

regencia
Champion
51
No.1
z

zcy22606

chengdu
Champion
26
No.2
D

David Barasa

Kenya
Champion
19
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

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

Pasanaku

A rotating savings protocol onchain. Create a “game,” add up to 12 participants, and take turns receiving the pot each round. Participants simply rotate who gets the pooled savings.

Tech StackReact, Next, Vyper, Python, Wagmi
Builder
RRafael Abuawad
DeFi

Pasanaku

A rotating savings protocol onchain. Create a “game,” add up to 12 participants, and take turns receiving the pot each round. Participants simply rotate who gets the pooled savings.

Tech StackReact, Next, Vyper, Python, Wagmi
Builder
RRafael Abuawad Vivanco
DeFi

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

PingPay

PingPay: AI-native money app on Arbitrum. Pay, Sweep, or Invest — all from chat.

Tech StackNext, Node, Solidity, Python, React, Ethers, SQLite
Builder
AAyush Banka
DeFiAISocialFi

ArbiSecure

ArbiSecure: Trustless service escrows on Arbitrum Stylus. Secure, low-gas payment links for the global gig economy that ensure instant settlement and eliminate platform fees.

Tech StackRust, Next, Web3, Ethers, Node
Builder
AAl Hadad
DeFiOtherDAO

FLIBBER

Flibber is the world’s first scam-resistant DeFi ecosystem that fixes three massive pain points in decentralized finance: inefficient bridging, scam-heavy fiat on/off-ramps, and low-quality NFT floods

Tech StackReact, Web3, Solidity, Rust
Builder
SSarl Godwins
InfraDeFiAINFT
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