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: …

This past February, we at Offchain Labs announced Stylus, an upgrade to the Arbitrum tech stack that will be ready later this year. Since then, we’ve been hard at work building the technology; we’ve been ambitiously tackling one of the most crucial aspects of the Stylus stack — its fraud…

Date: 2023/05/12 Authors: Nishant Das, Terence Tsao, Preston Van Loon, Potuz, Kasey Kirkham, James He Status: Mitigated. Investigation complete. Prysm v4.0.4 released with fixes. Network: Mainnet Summary On Thursday, 2023–05–11 around 20:19 UTC, Ethereum’s Mainnet network suffered a significant lack of block production which led to a temporary delay (4 epochs)…

Hi Friends — welcome to the latest installment of our quarterly Prysm updates! Here’s a recap of some roses and thorns from Capella along with some insight into what the Prysm team’s working on now. Also, if you’re a validator using Prysm—don’t miss our UI feedback link at the end…

Tl; dr: We explain in detail the different components that make up an Ethereum validator’s reward. We describe common situations that make stakers miss some of these rewards and show how to diagnose the — typically uncommon — scenarios in which there are actual problems with the software and action…

tl; dr: This article presents a high-level technical overview of the upcoming validator withdrawal process in Ethereum Proof of Stake. The long-awaited Capella/Shanghai hard fork will introduce the ability to withdraw the validator balance into an Ethereum address. The article also addresses some of the misconceptions and implications of this…

tl; dr: We’re proposing a modified transaction ordering policy for the Arbitrum sequencer, adding a “time boost” to the current first-come, first-served policy, where a transaction could pay a priority fee to get a small advantage or “time boost” in the ordering. This shouldn’t affect most users, but can provide…

Pack your luggage and space helmets Arbinauts 🚀 The Arbitrum team is heading to ETH Denver from Thursday, March 2nd — Sunday, March 5th and we’re excited to bring our community together to explore, connect and have fun! We welcome all to join us on this fun Arbinaut adventure! Below you can find information related to all Arbitrum…

Short Overview: Non-technical introduction to the question of timing when to post layer two calldata on the Ethereum base layer. Efficient and robust posting strategy that minimizes the costs of posting data and keeps delays low. The Ethereum blockchain satisfies high security and decentralization requirements, but it is not scalable…