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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 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

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

lendarb

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

Tech StackNext, Rust
Builder
IIsha Bagadiya
DeFiAI

Aristhrottle

Content sharing platform powered by Blockchain and AI to reward user attention through Attention Reward Token - $ART. Anonymous voting mechanism which rewards voter with 0.1 $ART and creator with 1 $ART. Leaderboard and milestones to add gamification. It is a movement to build the PLAN - Peoples' Language and Art Network.

Tech StackSolidity, Ethers, Python, Next
Builder
SShubham Agarwal
SocialFiDeFiAI

Stylus-English-Auction

English Auction is a decentralized NFT auction platform where sellers can list their NFTs and participants compete by placing progressively higher bids in ETH over a 7-day period. At the end of the auction, the highest bidder wins ownership of the NFT, while the seller securely receives the winning bid amount, with refunds available for non-winning participants.

Tech StackNext, Web3, Ethers, Node, Rust
Builder
DDEVYANIBA GOHIL
NFT

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
DDEVANSH GAJJAR
NFT

Orbital

A next-gen AMM that supports 2, 3, or even 10,000 stablecoins in a single pool, scaling concentrated liquidity into higher dimensions.

Tech StackSolidity, Rust, Next, Node
Builder
YYash Agrawal
InfraDeFi

Soma

SOMA is a blockchain-powered platform transforming cross-border transfers in Africa. Using offline-first USSD technology, it enables instant, low-cost transactions on any mobile phone.

Tech StackNext, Web3, Node, Solidity
Builder
IIteoluwakisi Bello
DeFi

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 L2 for faster, cheaper, scalable impact.

Tech StackNext, Solidity, Web3, Ethers, Viem
Builder
JJoshan Sagayam
OtherDeFiAI

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

TriggerX

TriggerX is a decentralized automation protocol that enables smart contracts to execute tasks based on time, conditions, or external events in a fully automated and trustless manner. Built on EigenLayer’s Actively Validated Services (AVS), it provides shared security and decentralization to ensure reliable task execution across multiple blockchains.

Tech StackNext, Go, Solidity, Web3, Ethers
Builder
PPrapti Shah
DeFiInfra

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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