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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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Doba

Doba is an onchain audio streaming service.

Tech StackNext, Solidity, TypeScript, Alchemy Account Kit, LayerZero (OApp v2), Arbitrum One, Base
Builder
Iiano
DeFiNFTRWASocialFi

Megamint

A transparent, on-chain lottery and giveaway platform that lets creators and projects engage their fans with fair, verifiable, and fun community experiences.

Tech StackReact, Ethers, Solidity, Web3
Builder
KKen Juniour
GamingNFT

LearnFi

学习不止打卡，时间即是资产。链上确权每一分钟，让努力都有价值回报。

Tech StackVue, Solidity, Ethers, Web3
Builder
MMarch
NFTDAOOther

STARK zk Coprocessor

STARK zk coprocessor unlocks pure ZK scalability on Arbitrum. We achieve 2.1x gas savings and 40% faster finality by verifying raw STARK proofs directly via Stylus, eliminating the wrapping tax.

Tech StackRust, Solidity, Web3, Next, React, Ethers
Builder
Hhoddukzoa
Infra

GhostTX

GhostTx is an analytics suite for Arbitrum Stylus. Using Rust and WASM, it provides a real-time dashboard for contract telemetry, gas simulation, and performance benchmarking. Made for L2 developers.

Tech StackReact, Web3, Ethers, Rust, Arbitrum Stylus, WASM
Builder
KKellypek
InfraOther

Arbitrum No Code Agent Builder

Zero Coding Experience? Now Build Complex On-Chain Agentic Workflows with NO CODE! Simply Drag and Drop, and your agent is READY! Powered Completely By Stylus Contracts!

Tech StackNext, Ethers, Rust, Node
Builder
SSam Felix
AIInfra

ArbiFans

A creator monetization platform powered by the x402 payment protocol, enabling instant content access, seamless contract signing, and frictionless Web3 payments without wallet complexity.

Tech StackReact, Web3, Node, Solidity, Arbitrum
Builder
SStefaron Evan
SocialFiInfra

Vitrum

The Onchain Identity & Reputation on Arbitrum.

Tech StackNext, Web3, Solidity, Alchemy, Tailwind CSS, Node JS, Wagmi, Rainbowkit
Builder
EEmmanuel Zoe
SocialFiNFTOther

zkAssetRaffle

A decentralized, transparent, and tamper-proof raffle system that bridges physical products and on-chain verification.

Tech StackNext, React, Node, Solidity, Move
Builder
Sskysys.eth
InfraRWA

Quintle

Because Trust Shouldn’t Be Optional.

Tech StackReact, Next, Web3, Ethers, Node, Solidity
Builder
AAlif Rizqullah M
DeFiNFT

WalletOps

WalletOps is a pioneering autonomous finance platform designed to bridge the gap between the convenience of Centralized Finance (CeFi) and the security of Decentralized Finance (DeFi).

Tech StackNext, React, Web3, Solidity, Node, Ethers
Builder
VVishesh Jain
DeFiAIInfra

ChatMint AI

ChatMint AI is an Intelligent IP Studio where creators use Gemini AI to generate ideas and register visual creations as on-chain IP assets on Story Protocol, ensuring true ownership and permanence.

Tech StackReact, Next, Web3, Node, Python, Solidity, Ethers
Builder
OOm Kumar
AINFTInfra
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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

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
M

Manjeet Sharma

india
Champion
16
No.1
R

Rick

California
Champion
16
No.2
D

DHRUV PANCHOLI

jaipur
Champion
15
No.3