PREPARE FOR MAJOR UPGRADE TO SPLICE 0.5.1 / CANTON 3.4 ON DEVNET: WEDNESDAY 12 NOVEMBER
validator-announce1 messagesstarted 10-11-2025
- Remember to prepare for the major upgrade with downtime on DevNet coming on Wednesday, 12 November at 9 am US Eastern (UTC -5)Important points to keep in mind:
- You should perform a final backup of your node after the Super Validators announce (in this channel) that the existing synchronizer has paused, and before the new synchronizer starts up.
- Synchronizer pause will start at 9 am US Eastern (UTC -5)
- The time between the pause of the existing synchronizer and the start of the new synchronizer is expected be between 90 minutes and two hours
- During this pause, no rewards will be issued, and no minting rounds will advance.
- The Super Validators will announce when the new synchronizer is live.
- If you want to minimize rewards you might miss, you'll want to upgrade as soon as possible after the new synchronizer starts up / goes live.
- Traffic balances will restart at zero. Any traffic balance held before the major upgrade will be lost.
- Ledger API transaction history is not preserved in this upgrade. The participant component in your Validator node will start with an empty history after the upgrade. The Scan history generated by the Super Validators is unaffected and will retain all information from before the upgrade.
- After the upgrade, the Super Validators will leave the prior, paused version of the DevNet synchronizer in place for ten days, to allow Validator nodes to catch up, take backups and perform the upgrade.