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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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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
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
60
No.1
R

Rick

California
Champion
44
No.2
D

DHRUV PANCHOLI

jaipur
Champion
33
No.3

LockD

LockD: The Web3 accountability protocol. Stake crypto as a hostage for your goals. Miss a deadline? Assets freeze. Turn loss aversion into pure productivity.

Tech StackNext, React, Node, Web3, Solidity, Arbitrum
Builder
FFarros Mufid
SocialFiOther

Z-Lag

ZeroLag is a decentralized AI agent marketplace where users create, trade, and run autonomous agents. Access, usage, and rewards are powered by the ZLAG token.

Tech StackReact, Web3, Ethers, Node, Solidity, Next
Builder
MMohit Mohit
DeFiAIRWA

No Risk Arbitrum Pot

This project is a decentralised blockchain based zero loss lottery system.

Tech StackReact, Web3, Ethers, Node, Solidity
Builder
RRahul Rathore
GamingDeFi

GuessFi-Arbitrum

一款休闲字谜卡牌游戏

Tech StackSolidity, Ethers, React, Rust
Builder
BBraised six
Gaming

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
JJinu Kim
Infra

Solar Credits - India

SolarCredits India enables small solar producers to mint AI-verified carbon credits on blockchain, unlocking real income, ultra-low fees, and transparent ESG compliance at national scale.

Tech StackReact, Web3, Ethers, Rust, Solidity, Node, Python, Arbitrum
Builder
JJayant Acharya
RWAAIInfra

No Risk Arbitrum Pot

This project is a decentralised blockchain based zero loss lottery system.

Tech StackReact, Web3, Ethers, Node, Solidity
Builder
CCipher Hex
GamingDeFi

Bountyx

The Trustless Bounty Marketplace on Arbitrum.

Tech StackWeb3, typescript
Builder
MMaaz
DeFiSocialFiOther

Arbivision

ArbiVision lets you monitor real‑time transactions, track DeFi performance, analyze protocols, and visualize on‑chain activity all in one powerful dashboard.

Tech StackReact, Solidity, Web3, Node, Redux, Tailwind CSS
Builder
TTaoheed Afolabi
Other

Harsa

An integrated agricultural supply chain platform on Arbitrum, enabling transparent product tracking and secure payments using escrow smart contracts to protect both farmers and buyers.

Tech StackReact, Next, Web3, Ethers, Solidity, Arbitrum, Tailwind, Node
Builder
Nnupers s
RWADeFi

Smart-Cache Stylus

SmartCache is an automated caching-as-a-service system for Arbitrum Stylus contracts. It allows developers to optimize contract performance directly from their code, without needing to manually interact with the CacheManager through a GUI or CLI. Using a simple annotation such as #[auto_cache], developers can indicate which contracts or functions should be evaluated for caching. An off-chain service then handles the entire process: benchmarking gas usage, analyzing cost-efficiency, and submitting a bid through Arbitrum’s CacheManager if the caching decision is financially beneficial.

Tech StackNext, Web3, Ethers, Solidity, Rust, Python, Node
Builder
MMeet Paladiya
InfraAI

Astrolabe

Astrolabe is a privacy-first AI astrology platform on Arbitrum. Your birth details never leave your device—your chart is computed locally and verified on-chain with a ZK “chart passport” using Stylus (Rust/WASM). Then external astrology agents compete to deliver predictions, get paid per call via x402 micropayments, and build an ERC-8004-aligned on-chain reputation so the best agents rise transparently.

Tech StackNext, Web3, Solidity, Rust, Node
Builder
AAbhishek Dubey
SocialFiAIOther
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