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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
H

Hendrix Iphonk

Surabaya, Indonesia
Champion
15
No.1
M

Minh Sơn

Vietnam
Champion
15
No.2
R

Ricky

California
Champion
15
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

Top-Signal-Browser

Signal Browser lets you explore tokens by momentum. Each click counts as a view—hit every 10th view and you get a chance to mint an NFT.

Tech StackVue, TypeScript, Rust, Javascript, Wagmi, viem, Ethers
Builder
MMann Shah
NFTDeFi

erc20-interactor

ERC20 Interactor is a clean web UI that connects to a Stylus/Rust ERC-20 contract and lets users and developers perform all common token operations — view name, symbol, decimals, total supply, check balances, send tokens, set allowances, and call transferFrom. Ideal for testing, demos, hackathons, and teaching token mechanics.

Tech StackNext, Web3, Ethers, Node, Rust
Builder
Ddjbusiness7785
NFT

lendarb

Lending Agent lets users lend, borrow, or withdraw on AAVE and Arbitrum using simple natural language.

Tech StackNext, Rust
Builder
IIsha Bagadiya
DeFiAI

OnlyFarmers

We turn staking from speculation into impact. Users stake on real farms, powered by DePIN devices and AI-driven yield data. Built on Arbitrum for faster, cheaper, scalable impact.

Tech StackNext, Solidity, Web3, Ethers, Viem
Builder
OOoviya Manickam
OtherDeFiAI

Omnicon

All in one solution for your contract generation , testing , documenting and onchain reports generation

Tech StackWeb3, Ethers, React, Next, Solidity, Node
Builder
GGanu
AIDeFiOther

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.

Tech StackWeb3, Node, Solidity, JavaScript, npm Package, Zero Knowledge, groth16, Circom
Builder
JJatin Sahijwani
InfraOther

yieldsphere

Yield Sphere Mini App is an AI-powered SocioFi companion that simplifies one of DeFi’s most complex protocols: Pendle. Built as a Farcaster mini app during the buildathon, it turns advanced concepts like yield tokenization, principal and yield tokens, and even stablecoin innovation into interactive, conversational learning. With chat-based guidance, structured lessons, and gamified quests, Pendle Agent lowers the barrier to understanding and experimenting with yield strategies — while helping onboard more users and transactions to the Arbitrum ecosystem.

Tech StackNext, Web3, Ethers, Solidity
Builder
DDhruv Patel
SocialFiDeFiAI

Stogram

Stogram is a Social x Predictions platform that blends content creation, prediction markets, and staking into a single, creator-driven ecosystem that aims to prioritize user privacy and monetizing engagement.

Tech StackNext, Ethers, React, Node, Solidity, Web3, IPFS
Builder
AAyush Gupta
SocialFi

Superpay - Payments and Loyalties

A SuperApp for Payment and Loyalties

Tech StackReact, Web3, Node, Solidity, React Native
Builder
MManish
SocialFiDeFi

ReMiT

Smart Cross-Border Remittances, Send money globally with AI-powered FX hedging. Minimize volatility risk while maximizing recipient value through intelligent hedge ratios on Arbitrum

Tech StackReact, Web3, Ethers, Solidity, Hardhat, Python, Node, Arbitrum Sepolia
Builder
RRohit Sharma
DeFiAIRWA

GridLock

Connect your X account and turn followers into rivals. Challenge them to epic games, let others bet and spectate live, and finally prove who’s the best - no talk, just play and win.

Tech StackNext, Web3, Ethers, Node, Solidity
Builder
AAyush Singla
SocialFiDeFiGaming

BPay

BPay is a decentralized protocol for bulk business payments, invoicing, and split-bill management - secure, instant, and multi-chain.

Tech StackNext, Ethers, Solidity, React, Web3
Builder
KKaushal Chaudhari
DeFi
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