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Ethereum Protocol Fellowship Cohort 5 Recap

November 29, 2025
5 min
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By ZadeNor AI Team
Ethereum Protocol Fellowship Cohort 5 Recap

Ethereum Protocol Fellowship Cohort 5 Recap

Ethereum Protocol Fellowship Cohort 5 Recap: A Year of Progress and Innovation

The Ethereum Protocol Fellowship (EPF) has successfully concluded its fifth cohort, marking a significant milestone in the development of the Ethereum core ecosystem. Over the past five months, a group of talented and dedicated fellows worked on a wide range of projects, contributing to the growth and improvement of the Ethereum protocol. In this article, we'll take a closer look at the highlights of the fifth cohort, the projects that were undertaken, and what's new for the upcoming sixth cohort.

A New Era of Collaboration

Prior to EPF5, the Protocol Study Group was launched, providing a comprehensive curriculum for students to learn about the core protocol. This initiative led to a smoother onboarding process for fellows, as they came ready for the fellowship with more knowledge and resources. The duration of the fellowship was also extended from four to five months, giving fellows an additional month to refine their projects and aim for bigger scopes.

EPF5 Stats

Applications for the fifth cohort opened in May 2024, and after reviewing over 300 applications, 20 participants were awarded initial stipends to participate in the fellowship. An additional 25 participants joined permissionlessly, bringing the total number of active fellows to 30. Over the five-month period, fellows contributed to 30 projects, with mentors from various client and research teams, including Grandine, Prysm, Lighthouse, Besu, Nimbus, Nethermind, Geth, Teku, RIG, and Reth.

Project Highlights

Some of the notable projects undertaken during EPF5 include:

  • Axum Transition in Lighthouse: Migration to the Axum framework in Lighthouse, enhancing the overall performance and scalability of the client.
  • Enhanced DHT Prototyping: A proposal for an enhanced DHT (Distributed Hash Table) with a rated list and hierarchical levels, improving the efficiency and effectiveness of the protocol.
  • ePBS Implementation in Nimbus: The implementation of EIP-7732 in Nimbus, enabling the use of efficient proof-of-stake (PoS) consensus.
  • EVM Memory Repricing: Research on EVM memory gas pricing, aiming to improve the efficiency and scalability of the Ethereum Virtual Machine (EVM).
  • PeerDAS Grandine: The implementation of PeerDAS (Peer-to-Peer Data Availability Sampling) in Grandine, enhancing the overall performance and scalability of the client.

Protocol Study Group Continues

The Protocol Study Group is back for 2025, with a renewed format and a comprehensive curriculum that covers the existing resources and new lectures from core developers. This initiative is not just a pre-cursor program to the EPF but a comprehensive curriculum for anyone wanting to learn more about Ethereum's core protocol.

Next Cohort Soon

The Ethereum Protocol Fellowship is gearing up for its sixth cohort, with an application announcement expected later in April. The cohort is set to start in June, and interested individuals can join the EPF mailing list to stay notified. To get ready for the fellowship, it's essential to have a foundational understanding of the Ethereum protocol, publically contribute to open-source projects, and give thought to the type of project you may like to work on.

In conclusion, the Ethereum Protocol Fellowship has made significant progress in the development of the Ethereum core ecosystem, with the fifth cohort marking a notable milestone. As the protocol continues to evolve, it's essential to stay informed about the latest developments and initiatives, such as the Protocol Study Group and the upcoming sixth cohort of the EPF.


Source: https://blog.ethereum.org/en/2025/04/10/epf-5-recap

About the Author

ZadeNor AI Team is a leading expert in WEB3 & BLOCKCHAIN, contributing to cutting-edge research and development in the field.