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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
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
A

Aaditya Rawat

Champion
29
No.1
K

Kaptan

Turkiye
Champion
22
No.2
G

Gwill❤️‍🔥

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

x

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

x

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

x

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

x

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

x

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

x

Arbitrum Open House India: Online Buildathon

TrainChain

TrainChain is a decentralized ticketing platform that transforms train travel through blockchain technology. By minting tickets as NFTs on Arbitrum, TrainChain eliminates counterfeiting, enables secur

Tech StackWeb3, Ethers, Node, Java, Solidity, React, Next
Builder
MModiti Rabalao
NFT

Blackrocq - Private DeFi in Arbitrum

Privacy DeFi powered by FHE. Swap, transfer, earn yield with fully encrypted balances. Prove compliance cross-chain without revealing amounts. Your trades are invisible, your credit travels

Tech StackNext, Web3, Node, Solidity, React, FHE, LayerZero
Builder
MManish
DeFiInfraOther

No Risk Arbitrum Pot

A Decentralized blockchain based zero loss lottery system.

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

vacuum

Arbitrum-native execution layer and superapp: swap (Uniswap V3), ERC-4626 vaults, strategy NFTs, DAO automation, non-custodial agents, and an optional private RPC with MEV protection. Fully permission

Tech StackWeb3, Ethers, Solidity, Next, Compact, React, Go
Builder
Hharsh sharma
InfraDeFiRWADAO

Cadence

Subscription infrastructure built on Arbitrum that enables autonomous recurring payments in USDC.

Tech StackReact, Ethers, Node, Solidity
Builder
MMuhammed Musa
DeFiInfra

Swoosh

Execute complex cross-chain transactions with natural language. Powered by AI and optimized routing all in Arbitrum + Orbit

Tech StackRust, React, Node, Railway, Chainlink CCIP
Builder
AAkanimoh Johnson
DeFiAIInfra

The Open Assets

Tokenise, invest, borrow, and earn yield on real-world assets - verified once, executed on Arbitrum, and usable across any chain with a single source of truth.

Tech StackReal World Asset Tokenisation, Web3, MERN, Solidity
Builder
AAbhinav Pangaria
RWADeFiInfra

Flash Protocol

Flash Protocol is an enterprise-grade, non-custodial cryptocurrency payment orchestration platform. It is engineered to bridge the gap between traditional commerce and decentralized finance, empowering merchants to accept payments in any token across over 70 blockchain networks while maintaining a seamless, single-currency settlement workflow.

Tech StackNext, React, Web3, Ethers, Node, Viem, Solidity, Typescript
Builder
SShreyas Patil
DeFiOtherInfra

Tilt Protocol

Tilt Protocol is the definitive AI-driven management layer for tokenized real-world assets, empowering anyone to deploy or allocate to institutional-grade trading strategies natively on the Robinhood L2.

Tech StackNext, Web3, Node, Solidity
Builder
AAdilbek Dostiyarov
DeFiRWAAI

Orlance

Arbitrum's Fixed Income infrastructure for tradable yield tokens, powered by automated rolling vaults and risk-free lotteries.

Tech StackNext, React, Web3, Solidity, AMM
Builder
FFerdinand

TrainChain

TrainChain is a decentralized ticketing platform that transforms train travel through blockchain technology. By minting tickets as NFTs on Arbitrum, TrainChain eliminates counterfeiting, enables secur

Tech StackWeb3, Ethers, Node, Java, Solidity, React, Next
Builder
MModiti Rabalao
NFT

Cadence

Subscription infrastructure built on Arbitrum that enables autonomous recurring payments in USDC.

Tech StackReact, Ethers, Node, Solidity
Builder
MMuhammed Musa
DeFiInfra
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