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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
M

Manjeet Sharma

india
Champion
16
No.1
R

Rick

California
Champion
16
No.2
D

DHRUV PANCHOLI

jaipur
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

Shinobi.Cash

Shinobi Cash: Cross-Chain Privacy Pools for the Multi-Chain World Shinobi Cash revolutionizes blockchain privacy by enabling users to deposit from any EVM chain and withdraw privately on any other chain. Shinobi Cash is built to meet users where they are, i.e, CrossChain. Key Features: - Built on Account Abstraction and OIF standards - Cross-chain deposits and withdrawals - 50-80% lower withdrawal costs using Paymaster and AA infra - Regulatory compliant with Association Set Provider - Single deployment serves all EVM chains - No custom relayer dependency

Tech StackReact, Web3, Node, Solidity
Builder
Kkarandeepsinghcaj
InfraDeFiOther

ZYURA

ZYURA makes flight delay insurance simple and instant using Arbitrum. Travelers pay a small premium, and if their flight is delayed, payouts are triggered automatically through smart contracts. No paperwork, no claims, and no waiting, just fast, reliable coverage. We make travel insurance transparent, affordable, and accessible to everyone.

Tech StackNext, Web3, Ethers, Solidity, Typescript
Builder
HHardik Jumnani
RWADeFiOther

ArbiRupee

ArbiRupee is a Rupee-backed stablecoin on Arbitrum, enabling INR deposits via Razorpay and 1:1 arbINR minting for seamless DeFi access.

Tech StackReact, Web3, Solidity, Node, Arbitrum, OpenZeppelin, Ethers
Builder
RRithvik Krishna D K
DeFi

Zynqtra

Zynqtra is a gamified networking platform that makes events more engaging through QR scans, interest-based matches, and interactive challenges with live leaderboards.

Tech StackSolidity, Next, Node
Builder
AAllen P.Jison
SocialFi

StreamPay

A Stylus-powered recurring payments protocol on Arbitrum One, enabling automated subscriptions and payouts with Gelato.

Tech StackRust, Web3, Typescript
Builder
VVipul Yadav
InfraDeFi

ProtectedPay

A comprehensive DeFi platform on the Mantle chain providing secure transfers, group payments, and smart savings features

Tech Stack
Builder
TTanishq Gupta
DeFiInfraSocialFi

StableUPI

A payment solution that lets users pay via stablecoins directly from their crypto wallets, while merchants receive instant INR through UPI, bridging the gap between crypto and everyday payments.

Tech StackNext, Solidity, Web3, Ethers, Node, Express, REST APIs
Builder
KKaushal Desai
SocialFiOtherDeFi

Unwallet

We’re building Unwallet, a new payment infrastructure designed for the agent-driven future. It enables agents, people, and businesses to transact seamlessly on Arbitrum Sepolia with USDC, supporting micro-payments, stealth P2P transfers, and plug-and-play business integrations.

Tech StackNode, Next, Web3, npm
Builder
AAbhishek Yadav
InfraAI

Fargo

Fargo is a platform that lets users create AI-generated images using their own NFTs. Users can mint these AI-generated images as new NFTs to store them permanently and create even more AI creations.

Tech StackReact, Web3, Solidity, Node
Builder
DDivyansh Goel
NFTAI

EscrowGuild

**Escrow Guild** is an AI-powered platform that automates secure, one-time smart contract generation for Escrow trades

Tech Stack
Builder
SShreyan D
InfraAIOther

Credstreak

CredStreak is an on-chain accountability app where users stake tokens on challenges—starting with fitness steps —and prove completion with Reclaim zkTLS,Built as a Farcaster mini-app on Arbitrum, it turns streaks into social, verifiable achievements.

Tech StackNext, Web3, zkTLS, Solidity
Builder
AAvinash Malothu
OtherSocialFi

ArbiRush

ArbiRush is all about quick decisions and clean runs. Learn the flow, grab boosts, and see how high you can climb on the leaderboard.

Tech StackNext, Solidity, Ethers, Web3
Builder
HHiral Vala
GamingDeFi
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