Ultra-Fast and Sub-Second: Cronos EVM’s Block Time Revolution

Up to 10x reduction in block time for high-frequency, real-time DeFi, gaming and payments.

Jun 12, 2025

As part of our commitment to optimizing the Cronos network and fostering increased on-chain activity, we are thrilled to announce a major enhancement for the Cronos EVM: A targeted 10x reduction in block time.

This improvement, alongside ongoing innovations such as parallel transaction execution from BlockSTM, is designed to directly improve both transaction speed and user experience, supporting projects on Cronos deliver faster, smoother interactions and positioning Cronos as one of the most compatible, low-latency, and high-throughput EVM chains.

Cronos EVM’s Block Time Leap

We aim to significantly reduce the block time from its current 5.6 seconds to sub-second, making Cronos EVM an blazing-fast, high-performance blockchain with low-latency. This enhancement builds on recent scalability improvements, including BlockSTM, a parallel execution engine that boosts transaction throughput by enabling concurrent processing.

Together, these optimizations are expected to:

1) Increase transaction throughput (TPS);

2) Provide ultra-fast, sub-second responsiveness across dApps, and end users

3) Enable better support for high-frequency use cases such as real-time DeFi, gaming, and payments.

Rollout schedule

Initial internal testing of the reduced block time has yielded promising results. Below is the anticipated rollout schedule:

Testnet Implementation: Expected week of 16 June. Builders will be able to start testing as soon as the update is live.
Mainnet Implementation: Tentatively planned for the first week of July 2025, subject to successful testing on the testnet.

We encourage all builders and infrastructure providers to test their applications performance on the Cronos testnet once the update is deployed.

Share Your Feedback

To ensure a smooth transition, we’re gathering input from DApps, developers, validators, and ecosystem partners.

If your project includes logic, indexing, time-sensitive operations that depend on the current block time, or if you have other potential concerns, we’re here to support you.

Please submit your feedback by Wednesday, June 18, 2025, using this form:
https://forms.gle/a6zW7wFpurnhgkEL6

This short form helps us identify concerns early and ensure a seamless transition for all projects in the Cronos EVM ecosystem.

Building a Faster Future for Cronos

This block time optimization is part of a broader set of upgrades focused on scaling Cronos for the next wave of Web3 adoption. This improvement enables Cronos to support the growing needs of developers, users, and builders.

We appreciate your continued support and look forward to your feedback as we roll out these improvements.