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Quartz, a consensus client for Reth

Developers can now spin up a fast EVM chain in minutes.

7/24/2025
Lyron Co Ting Keh

Developers building EVM blockchains currently don't have a consensus engine that is both:

  1. Turnkey. It can easily plug into an EVM execution client, like Reth.
  2. Fast. It runs with sub-second blocks.

We ran into this problem first-hand with Seismic. Consensus isn't our focus. We just wanted something that worked and could keep up with modern blockchains, but we couldn't find a good solution.

Quartz is the consensus client we wish we had from the start. Now, we're open-sourcing it so other teams can have easier times spinning up their own EVM chains.

Quartz is both turnkey and fast

This would not have been possible without the incredible work of Commonware. We use almost every single one of their primitives. Our architecture is also heavily inspired by their Alto project.