Towards a Faster Finality Protocol for Ethereum

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• Luca Zanolini, Ethereum Foundation
• Tuesday 04 February 2025, 14:00-15:00
• Webinar & FW11, Computer Laboratory, William Gates Building..

If you have a question about this talk, please contact Tina Marjanov.

Ethereum’s Gasper consensus protocol typically requires 64 to 95 slots—the units of time during which a new chain extending the previous one by one block is proposed and voted—to finalize, even under ideal conditions with synchrony and honest validators. This exposes a significant portion of the blockchain to potential reorganizations during changes in network conditions, such as periods of asynchrony.

In this talk, I will introduce 3SF, a novel consensus protocol that addresses these limitations. With 3SF, finality is achieved within just three slots after a proposal, drastically reducing the exposure to reorganizations. This presentation will explore the motivation, design, and implications of 3SF, offering a new perspective on the future of Ethereum’s consensus protocol.

Paper: https://arxiv.org/abs/2411.00558

This talk is part of the Computer Laboratory Security Seminar series.

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• Webinar & FW11, Computer Laboratory, William Gates Building.
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