Avalanche core team implements Cortina upgrade on mainnet

Quick Take

  • Avalanche activated the Cortina upgrade on its mainnet at 11 a.m. ET yesterday. 
  • Cortina upgraded to the latest version of Avalanche Go v1.10.0, optimizing the network for developers.

Avalanche, a proof-of-stake blockchain developed by Ava Labs, activated the Cortina upgrade on its mainnet, implementing changes to help optimize the network for developers.

Cortina upgraded to the latest version of Avalanche Go v1.10.0, the node implementation for the Avalanche network, at around 11 a.m. ET yesterday. 

The Cortina upgrade included migrating the X-Chain to run the Snowman++ consensus, which means that the entire network has been migrated to a single consensus engine. This change is crucial for integrating Avalanche Warp Messaging (AWM) as well as enabling complex X-Chain transactions.

Avalanche's different chains

The Avalanche X-Chain, or Exchange Chain, is one of the three primary chains within the platform, alongside the P-Chain (Platform Chain) and C-Chain (Contract Chain). The X-Chain is specifically designed for creating and managing native Avalanche assets.


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Additionally, the upgrade involved changes to the C-Chain, the smart contract layer compatible with the Ethereum Virtual Machine. Cortina increased the C-Chain block gas limit from 8 million to 15 million gas to accommodate the deployment of more complex dApps on the network. The gas target, a specific amount of gas that the network aims to consume within a given time window, will be kept at 15 million gas per 10 seconds.

The upgrade comes at a time when the C-Chain, where the bulk of activity takes place, is seeing a resurgence. Daily transactions have more than tripled year to date after a period of significant decline at the end of 2022, data from the Avalanche block explorer SnowTrace shows.

© 2023 The Block. All Rights Reserved. This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.

About Author

Vishal Chawla is The Block’s crypto ecosystems editor and has spent over six years covering tech protocols, cybersecurity, artificial intelligence and cloud computing. Vishal likes to delve deep into blockchain intricacies to ensure readers are well-informed about the continuously evolving crypto landscape. He is also a staunch advocate for rigorous security practices in the space. Before joining The Block, Vishal held positions at IDG ComputerWorld, CIO, and Crypto Briefing. He can be reached on Twitter at @vishal4c and via email at [email protected]


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