Arbitrum powers fast, private decentralized applications.

Smart Contracts That Scale

We make smart contracts easier to develop at massive scale, with production level security. Our developer tools do the heavy lifting to add a flexible second layer to your decentralized application architecture, so that you can focus on business logic and user experience.

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Recent Press

Why Use Arbitrum?


Running an Arbitrum contract is only a few times the cost of a simple payment transaction. Unlike Ethereum, the cost is fixed regardless of how much code, storage or computation the contract uses. 


Nobody other than the participants of a contract can see its code or its internal state. Only the public actions of a contract, such as payments it makes, are visible to the world.


Developers and users get the privacy and low cost of an off-chain solution with the simplicity and security of an on-chain solution.

Dive Deeper

Want to learn all about how Arbitrum can enable you to build new applications? Read our recently released whitepaper.

Read the white paper

Want to learn even more details about how Arbitrum works? Read the academic paper, published at USENIX Security.

Read the Academic paper

Ready to dig into the code and start using Arbitrum today with our developer preview? Check out our developer website

Read the code


Ed Felten

Ed Felten is the Robert E. Kahn Professor of Computer Science at Princeton University. He formerly served in the White House as Deputy United States Chief Technology Officer. He is a member of the National Academy of Engineering, and co-author of the leading textbook on cryptocurrencies.

Steven Goldfeder

Steven Goldfeder is a postdoctoral researcher at Cornell Tech where he works at the intersection of crypto(graphy) and crypto(currencies). He holds a PhD from Princeton University and is a co-author of Bitcoin and Cryptocurrency Technologies, the leading textbook on cryptocurrencies.

Harry Kalodner

Harry Kalodner is a PhD candidate at Princeton University working under professor Arvind Narayanan. His research explores economics, anonymity, and incentive compatibility of cryptocurrencies. He developed BlockSci, a tool for cryptocurrency analysis as well as a Bitcoin mining strategy simulator.


Upcoming Events

Members of our team will be at these upcoming events. Feel free to email us at [email protected] if you'd like to connect at any of these venues.

Event Schedule


We’re looking for motivated and experienced developers to join our team. For more information, email us at [email protected].

Current Openings
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