CANTON 3.4 TO CANTON 3.5 TRANSITION
validator-announce1 messagesstarted 08-06-2026
- Daml Models from Splice 0.6.2 take effect on MainNet. Requires Splice 0.6.2 at minimum:
- MainNet: UPGRADE BEFORE 2026-06-09
Phase 3: Upgrade Global Synchronizer networks to Canton Protocol 35- All three Global Synchronizer networks will perform a Logical Synchronizer upgrade to Canton protocol Version 35.
- Minimum Splice Version for for Validators for this Upgrade: Splice 0.6.5
- Dates: (All events at 9 am US Eastern / 1300 UTC)
- LSU from protocol version (PV) 34 to 35 on DevNet:
- Topology Freeze: 2026-06-09
- Upgrade: 2026-06-10
- LSU for PV 34->35 on TestNet:
- Toplogy Freeze: 2026-06-16
- Upgrade: 2026-06-17
- LSU for PV 34->35 on MainNet:
- Toplogy Freeze: 2026-06-26
- Upgrade: 2026-06-27
App Provider Experience during Logical Synchronizer Upgrades (LSUs):- All party onboarding, package vetting and other topology transactions will pause for 24 hours before the LSU, and will resume immediately after the LSU completes.
- Daml transactions will be delayed for seconds to minutes at the moment of the LSU
- App providers should experience no other impact.
Also Coming in Phase 3:
Traffic-based App Rewards are currently expected to go live on MainNet at the end of July. Based on the current plan, this will require upgrading Validator nodes to Splice 0.6.11.- Important dates for Traffic-based App Rewards
- July 1: Dry Run of Traffic-based app rewards goes live on MainNet.
- TBD July: MainNet switches to traffic-based app rewards (final date will depend on schedules for various production trading dry runs taking place during July).
- Daml Models from Splice 0.6.2 take effect on MainNet. Requires Splice 0.6.2 at minimum: