The Pectra testnet activation revealed issues in clients with deposit contract configurations changes on Ethereum testnets. While Sepolia’s recovery was straightforward and the network has since fully recovered, Holesky experienced extensive inactivity leaks as part of its recovery mechanism. The Holesky network has since then finalized, but the exited validators would take approximately one year
Ethereum’s weekly All Core Developer calls are a lot to keep up with, so this “Checkpoint” series aims for brief high-level updates with a target cadence of every 4-5 calls, depending on what’s happening in core development. See the initial update here. All subsequent updates will be hosted here on the Ethereum Foundation blog. The
TL;DR: The EPF successfully concluded the fifth cohort, Study Group 2025 and is preparing for cohort six (EPF6). Applications will be announced soon, keep an eye on the EF blog! In the meantime, get ready by enhancing your Ethereum protocol knowledge at EPF.wiki and sign up for the newsletter to get notified about announcements. The
TL;DR: We are excited to announce that the applications are now open for the sixth cohort of the Ethereum Protocol Fellowship (EPF6). The EPF provides a pathway for aspiring protocol developers to make meaningful contributions to Ethereum. In each cohort, a diverse group is assembled to work toward advancing Ethereum’s roadmap during the fellowship. This
Since January 2019, the Ethereum Foundation has held a tradition of engaging directly with the community through our “Ask Us Anything” (AMA) series on Reddit, occurring roughly every six months. These AMAs, previously hosted by the EF Research team, have provided a forum for deep dives into the protocol’s evolving landscape, direct Q&A with core
Since announcing the Trillion Dollar Security project, we have surveyed the ecosystem to understand which improvements are highest priority to every layer of the Ethereum stack and community. Now it is time to begin the next phase of this initiative: acting on the highest priority issues we face. For this first wave of actions, we
Starting with the upcoming Fusaka hard fork, EIP-7825 introduces a per-transaction gas limit cap of 2²⁴ (≈ 16.78 million gas). This change is already live on Holesky and Sepolia, and will activate on mainnet with Fusaka. Developers and users who rely on very large transactions should verify that their contracts and transaction builders conform to
Over the past few years, the Ethereum ecosystem has grown in depth, diversity, and maturity. Builders and communities worldwide have pushed the boundaries of what’s possible, creating new tools, protocols, and public goods that strengthen the network as a whole. As the ecosystem grows, our approach to supporting it must adapt as well. Today, we’re
In two weeks, we open the doors to the first-ever Ethereum World’s Fair at La Rural in Buenos Aires. This year isn’t about someday. It’s about now. On Ethereum today you can pay, play, vote, save, borrow, lend, and chat, all onchain — and at Devconnect you’ll experience that shift hands-on, IRL.Buenos Aires is the
Fusaka follows this year’s Pectra upgrade, representing a major step forward in Ethereum’s scaling roadmap that improves L1 performance, increases blob throughput, and enhances user experience. The Fusaka network upgrade is scheduled to activate on the Ethereum mainnet at slot 13,164,544 (December 3, 2025, 21:49:11 UTC). Fusaka also introduces Blob Parameter Only (BPO) forks to
