in collaboration with Ratwell & Project Galaxy Do you like free-mint NFTs? How about 17 Arbitrum-exclusive NFTs designed by the illustrious crypto-renowned artist Ratwell and Sugoi? If you answered no to either of the above questions, then stop reading right now. This post is not for you. Awesome, you’re still…

tl;dr Arbitrum Nitro is ready, and today we’re launching a full-featured Nitro devnet built on Ethereum’s Görli testnet. We’re also opening up the codebase and detailing our plans for a seamless Arbitrum One migration. Arbitrum Nitro is the most advanced rollup stack ever built, and it enables massively higher throughput…

tl;dr: Today we’re announcing AnyTrust chains, an Arbitrum mode for ultra low-cost transactions with strong security guarantees. AnyTrust chains will operate alongside Arbitrum One. We love optimistic rollups. They inherit the security of the underlying L1 chain, in our case Ethereum, while providing lower cost and higher throughput than the…

Earlier today, we experienced Sequencer downtime, which made the Arbitrum One network temporarily unavailable. The issue has now been fully resolved, and the Arbitrum Sequencer as well as all public RPC nodes are fully operational. …

We’re hearing a lot of talk about how ZK rollups are supposedly the future of general smart contract systems. We disagree — and this post explains why. It draws on the practical lessons we have learned from running an open, secure, EVM-compatible L2 chain with hundreds of dapps, hundreds of…

tl;dr: Today we’re unveiling Arbitrum Nitro, the next iteration of Arbitrum, which we’ve been working on for months. It’s built on standard technologies like WASM and Geth, so it’s more EVM-compatible, an order-of-magnitude faster than our current tech, and adds another 0. …

It’s time for another installment of our Inside Arbitrum series, this time about fraud proofs and the role of validators. The key to the security of any rollup chain is the ability to provide fraud proofs if someone tries to cheat. …

Beginning at 10:14 AM Eastern today (September 14, 2021) and continuing for approximately 45 minutes, the Arbitrum Sequencer was offline. Funds were never at risk, but the submission of new transactions stopped during the downtime. Arbitrum One is still in its beta phase, and we will do our best to…

Before diving into the next steps on our roadmap, we just want to give a quick shoutout to the whole community! It has been an incredible ten days (yes, it’s only been 10 days!) and we are thrilled to be sharing this moment with all of you. …