Arbitrum Open House India: IRL Hack Bengaluru
Code in Bengaluru. Launch on Arbitrum. Pitch at Demo Day. $70k up for grabs.
Hackathon State

Host by
Arbitrum Foundation
Hackathon Mode
OFFLINE
Ecosystem
Venue
Tamarind Tree
Tech Stack
Participants
70,000 USD
Available in Prizes
Description
Robinhood serves 28 million users. They chose Arbitrum.
BlackRock manages $12.5 trillion. They chose Arbitrum.
Ubisoft builds for 134 million players. They chose Arbitrum.
In four days, you could build what comes next.
Open House India IRL connects the world’s largest pool of builders with the infrastructure that the world’s largest companies stake their reputations on.
Four days in Bengaluru for teams who turn ideas into products.
Four days working with teams that have delivered billions in value.
Four days building in an ecosystem designed for growth.
Four days that could change everything.
Build the way you think.
Write in Rust, C++ or Python with Stylus. Use Solidity if that’s home. Deploy on Arbitrum One for shared liquidity or chart the path to a custom Orbit chain if your design calls for dedicated blockspace.
DeFi. Gaming. Social. Developer tools. Something no one has seen yet.
What you build, that’s up to you. And you won’t be building alone.
Work side-by-side with Arbitrum engineers and founders who have gone from zero to one, with support from the Ethereum Foundation, OpenZeppelin, Couchbase and Appwrite.
Expect focused morning checkpoints, intensive build sessions, technical workshops and mentorship that will sharpen the narrative and the code.
Prizes recognise outcomes.
First place takes $40,000. Second takes $20,000. Third takes $10,000.
But winning is just a milestone, not the finish line.
Because the competition is just the beginning.
Demo day connects winning teams with VCs who back this space. Outstanding projects will be fast-tracked into Arbitrum's growth programmes. Exceptional work opens doors to ecosystem partnerships that extend far beyond the event.
The foundation is ready. The ecosystem is waiting.
Now it’s time to build.
Build in Bengaluru. Build Everywhere.
Arbitrum Everywhere.
FAQs
Open House India: Champions
70,000 USDC
Open House India: Champions
Open House India: Champions
Judging Criteria
Your project must be deployed on an Arbitrum chain to qualify. For example: Arbitrum Sepolia, Arbitrum One, Orbit chains.
Projects are assessed on the following criteria:
Smart contract quality - code following best practices, structured logically and efficiently, with minimal security vulnerabilities
Product-Market Fit - projects with clear potential to attract and retain users
Innovation and Creativity - original approaches that push boundaries
Real Problem Solving - applications that address genuine market needs
Schedule
Resource
Developer Documentation
Hey Open House India builders! We have compiled a list of useful information for you below. Please take a thorough look as most of the information you will be looking for will be covered here.
Faucets
Ethereum Sepolia - claim testnet ETH, then bridge it to Arbitrum Sepolia using the bridge.
https://sepoliafaucet.com/
https://arbitrum.faucet.dev/
https://www.infura.io/faucet/sepolia
https://sepolia-faucet.pk910.de/
Arbitrum Sepolia - just claim testnet ETH and you're ready to go:
https://arbitrum.faucet.dev/
https://faucet.quicknode.com/arbitrum/sepolia
https://www.l2faucet.com/arbitrum
Arbitrum Sepolia USDC Faucet:
https://faucet.circle.com/
RPC Endpoints
Useful Tools for Builders
Arbitrum Docs: https://docs.arbitrum.io/
Arbitrum SDK: https://github.com/OffchainLabs/arbitrum-sdk
Stylus Docs: https://docs.arbitrum.io/stylus
Stylus By Example: https://stylus-by-example.org
Stylus CLI: https://github.com/OffchainLabs/cargo-stylus
Stylus Rust SDK: https://github.com/OffchainLabs/stylus-sdk-rs
OpenZeppelin Rust Contracts: https://github.com/OpenZeppelin/rust-contracts-stylus
OpenZeppelin Solidity Contracts: https://github.com/OpenZeppelin/openzeppelin-contracts
Sponsors & Partners
OpenZeppelin
Ethereum Foundation: Founder Success
Couchbase
Appwrite