Ethereum Foundation initiates Holešky network shutdown after completing Fusaka upgrade
Key Takeaways
- The Ethereum Foundation is decommissioning Holešky after completing the Fusaka upgrade.
- Holešky enabled the testing of PeerDAS and partial data verification, reducing bandwidth requirements for validators and benefiting L2 networks.
Share this article
The Ethereum Foundation has begun winding down Holešky, an Ethereum testnet launched in 2023 for large-scale validator and upgrade testing.
In a post on X, the Foundation confirmed that Holešky will undergo planned node shutdowns two weeks after the Fusaka upgrade finalizes. Operators are advised to migrate testing to Hoodi and Sepolia, which now serve as Ethereum’s primary testnets for staking and application development.
Holešky hosted major upgrade trials, including Dencun, Pectra, and most recently Fusaka—a network upgrade introducing PeerDAS to reduce bandwidth use for validators and improve scalability for layer-2s.
Following Fusaka’s completion, the testnet reached its planned end-of-life and will no longer receive client or infrastructure support. Its successor, Hoodi, launched in March 2025, provides a fresh validator environment, while Sepolia remains the preferred network for developers.
Holešky’s sunset marks Ethereum’s shift toward purpose-built, shorter-lived testnets that serve specific upgrade milestones before decommissioning.
Disclaimer: The content of this article solely reflects the author's opinion and does not represent the platform in any capacity. This article is not intended to serve as a reference for making investment decisions.
You may also like
Bitcoin due 2026 bottom as exchange volumes grind lower: Analysis

samczsun: The Key to Crypto Protocol Security Lies in Proactive Re-Auditing
Bug bounty programs are passive measures, while security protection requires proactive advancement.

Millennials with the most cryptocurrency holdings are reaching the peak of divorce, but the law is not yet prepared.
The biggest problem faced by most parties is that they have no idea their spouse holds cryptocurrency.

Using "zero fees" as a gimmick, is Lighter's actual cost 5–10 times higher?
What standard accounts receive from Lighter is not free trading, but rather slower transactions. This delay is turned into a source of profit by faster participants.
