Arbitrum Blog

Arbitrum Stylus: Now Live on Mainnet

Since the public launch of Arbitrum One on August. 31, 2021, the Arbitrum ecosystem has equipped developers with flexible tools to unleash their imaginations and build more powerful, efficient and original products on the blockchain. Today's activation of Stylus on Arbitrum One and Nova mainnets is a milestone

Announcing Bridged USDC as a Custom Gas Token for Orbit Chains

On January 24 of this year, Arbitrum announced custom gas token support for Arbitrum Orbit chains, allowing Orbit chains to charge gas fees using an ERC20 token of their choice, including their own tokens. Bridged USDC is now supported as a custom gas token on Arbitrum Orbit chains! This milestone

A quick introduction to Arbitrum Orbit

If you want to build your own application on the blockchain look no further than Arbitrum Orbit. Arbitrum Orbit allows users to create their own customizable Arbitrum Rollup or Arbitrum AnyTrust chain that is compatible with Ethereum.  Founders and developers will have the option to configure various components of their

Case Study: Xai and Arbitrum Orbit Revolutionize Onchain Game Publishing

Blockchain technology can revolutionize the gaming industry by decentralizing ownership and reshaping in-game economies. That gaming revolution will be built on blockchain infrastructure that makes onchain gaming as intuitive as Web2 games. Enter Xai, the pioneering Layer 3 solution for AAA gaming, powered by Arbitrum’s cutting-edge scaling technology. Xai:

A beginner’s guide to Arbitrum products

So, you’re new to the blockchain technology world and you have just learned a little bit about Bitcoin and Ethereum. Then, during your research, you came across Arbitrum, and you’re wondering who these people are. To simplify, Arbitrum is a suite of technological innovations designed to scale Ethereum.

Welcome to the Stylus Blitz Hackathon

Stylus is live on Arbitrum Sepolia! And we can’t wait for builders to experiment. We’re thrilled to announce the Stylus Blitz Hackathon to inspire developers to leverage the power of Stylus contracts. With Stylus set to go live on Arbitrum Sepolia on June 17, 2024, this is your

Introducing Frame It: An Arbitrum x Farcaster Buildathon

We’re excited to announce that Arbitrum transaction support is now live on Farcaster! To celebrate Arbitrum’s integration on Farcaster, we’re hosting Frame It: A Buildathon for developers to create Frames, with $500,000 in retroactive rewards. Starting now you can build Frames with direct Arbitrum transaction support

Arbitrum BOLD Testnet Live: The Next Step in Decentralization

Written by Raul Jordan, Derek Lee, David Dennis Offchain Labs is thrilled to announce another milestone in the evolution of Arbitrum: the testnet availability of Arbitrum BOLD — the next-generation dispute resolution protocol with working, interactive fraud proofs for optimistic rollups. Building upon the foundation laid in our original announcement of

ArbOS 20 “Atlas” Now Live: Bringing Ethereum Dencun Support to Arbitrum Chains

Written by Terence Tsao and Lee Bousfield — March 14, 2024 We’re elated to announce the much-anticipated release of ArbOS 20, affectionately dubbed “Atlas.” This milestone marks a significant leap forward for the Arbitrum ecosystem, introducing Ethereum Dencun support (EIP-4844, EIP-1153, EIP-5656, and EIP-6780) to Arbitrum chains, paving the way

Introducing Arbitrum Arcade

Introducing the Arbitrum Arcade, an Onchain Gameathon designed to showcase Web3's most innovative gaming experiences, provide exposure and prizes to up-and-coming content creators, and bring in-game achievements onchain with Clique, built on top of EAS (Ethereum Attestation Service). Arbitrum Arcade will kick off on March 11th through the

Why I’m Still Optimistic About Optimistic

Arbitrum uses an optimistic rollup protocol. People often ask why we chose optimistic for Arbitrum, and whether we expect Arbitrum to switch to ZK proving. I have written about this before, but that was almost two years ago. Here’s my current personal view. Others may disagree. I’m a

Arbitrum Odyssey: Reignited

Tldr: The Arbitrum Odyssey is back, REIGNITED! In collaboration with Galxe, you’ll go through a 7-week excursion that’ll have you exploring some of the biggest communities in the Arbitrum ecosystem and collect custom badges, created by Ratwell and frens, marking checkpoints throughout your journey. Key Takeaways: * Arbitrum Odyssey:

Stylus Now Live — One Chain, Many Languages

Written by Rachel Bousfield, Austin Marrazza, David Dennis — August 31, 2023 TL;DR: Today we released the code and public testnet for Arbitrum Stylus, allowing developers to use both traditional EVM tools and WASM-compatible languages like Rust, C, and C++ to build applications on Arbitrum Nitro chains. In addition, by

Arbitrum Orbit AnyTrust Chains

Written by Lee Bousfield and Olivia Jurkowitz — August 17, 2023 TL;DR: Today we’re making it easier than ever to launch Arbitrum Orbit AnyTrust chains. You can now use the Orbit documents and deployment portal to create a devnet AnyTrust chain that hosts EVM-compatible smart contracts. Orbit Anytrust chains

BOLD, Permissionless Validation for Arbitrum Chains

Written by Ed Felten and Raul Jordan — August 3, 2023 TL;DR: We are announcing BOLD (Bounded Liquidity Delay): a dispute protocol we invented at Offchain Labs that can enable permissionless validation for Arbitrum chains. The code and specification are now available on Github here! BOLD allows Arbitrum-technology chains to:

USDC to Come Natively to Arbitrum

Circle is launching USDC natively on Arbitrum on June 8, 2023! Keep reading to learn more about this launch and how to migrate liquidity from “bridged USDC” to native USDC. Native to Arbitrum USDC issued by Circle will be native to Arbitrum. This will be the official version of USDC

Arbitrum Nitro: one small step for L2, one giant leap for Ethereum.

The time has come Arbinauts. Arbitrum One has now been fully migrated to the Nitro stack! Ahhhhh! Yes, it’s true, Arbitrum One is now running on Nitro — increased throughput, lower fees, next generation rollup architecture is happening, and it’s all live now on Arbitrum One mainnet. This is