Cronos (CRO) zkEVM Testnet Scheduled for Reset and Upgrade
The Cronos (CRO) zkEVM Testnet is set to undergo a significant reset and upgrade on October 21, 2024, as announced by Cronos Labs. This move aims to ensure long-term consistency between the Cronos zkEVM Mainnet and Testnet, keeping the systems aligned for optimal performance and reliability.
Details of the Reset
The reset will initiate a fresh start for the Testnet, erasing all existing states and introducing a new chain ID, 240, replacing the current ID, 282. This transition is expected to have no impact on end-users or their funds, as they remain unaffected on the Mainnet. Developers utilizing the Testnet are advised to take note of these changes and adjust their configurations accordingly.
Motivation Behind the Reset
The decision to reset the Testnet follows several major upgrades to the ZKsync codebase used by Cronos zkEVM throughout 2024. While the Mainnet has been updated to reflect these changes, the Testnet has lagged slightly behind. Resetting the Testnet ensures full compatibility and consistency with the Mainnet, offering developers a stable and synchronized environment for testing and deployment.
Impact on Developers
On October 21, with the deployment of a new Testnet, developers will need to switch endpoints and services to align with the new system. This includes updated Testnet public endpoints, JSON RPC, WebSocket services, and the Developers Portal APIs. Instructions for reconfiguring MetaMask with the new Chain ID will be provided in the updated Cronos zkEVM documentation.
Transition Period and Discontinuation
During a grace period from October 21 to November 4, the "old" Testnet with Chain ID 282 will continue to be accessible via deprecated URLs. This allows developers time to transition smoothly to the new Testnet configuration. However, by November 4, the old Testnet will be completely discontinued, and all related endpoints will be deactivated.
For more detailed information and updates, developers are encouraged to follow the official announcements from Cronos Labs on their website.