Major upgrades. Business as usual.
Onchain financial markets demand always-on, highly resilient rails where upgrades to the core network deliver regular incremental value - without introducing operational complexity and uncertainties in the process.
On most public blockchains, major protocol upgrades require extensive coordination across validators, infrastructure providers, exchanges, application teams, and other ecosystem participants. Operators need to align around activation schedules, perform compatibility testing, and manage operational risk across a globally distributed ecosystem. As networks grow, the coordination burden grows with them.
Since launch, Canton Network has been focused on overcoming such challenges. Institutional infrastructure for global capital markets and settlement cannot be held back by protracted windows of global coordination every time major new capabilities are delivered to the community.
With the introduction of Logical Synchronizer Upgrades (LSUs), now live on Mainnet with the release of Canton 3.5, major protocol upgrades become a business-as-usual process. Upgraded infrastructure runs in parallel as the network goes through the upgrade and when it's time to switch, the transition is handled automatically, and completes in just seconds or minutes.
Why this matters
As tokenized assets, stablecoins and onchain collateral increasingly accelerate toward 24/7 operations, network infrastructure upgrades should be more like updating the operating system on your laptop.
Since MainNet launch in 2024, Canton has quietly upgraded protocol versions four times, successfully transitioning the rapidly growing community and the infrastructure it runs on to the latest versions. Coordination has been tightly managed to maintain high uptime and ensure smooth migrations, but as the network grows Logical Synchronizer Upgrades take this process to the next level, creating the foundation for the next phase of scale and continued institutional adoption.
What are Logical Synchronizer Upgrades?
Canton’s architecture was designed from day one to support the needs of a globally composable network of applications providing independence and control to its constituents. Part of this promise means moving away from the legacy public blockchain model of disruptive, monolithic upgrades.
LSUs enable upgrades to be parallelised, spinning up new synchronizer infrastructure alongside the existing network. When the network switches over, applications continue interacting with the same ‘logical’ network and all historical data is preserved. Upgrades across the network can then be completed automatically, without the need for major data migration reloads. Applications continue as normal. Upgrades become routine.
How it works
1. New infrastructure comes online alongside the old
Synchronizer operators deploy successor synchronizer nodes before the upgrade occurs. Both versions run in parallel.
2. Validators upgrade during the upgrade window
Validators install the new software either ahead of, or shortly after, the protocol upgrade. The upgraded software supports both the old and new protocol versions simultaneously, allowing Validators to continue processing messages seamlessly before and after the network switches over.
3. The network coordinates the switchover onchain
A governance proposal schedules the upgrade. The Logical Synchronizer signals to validators when to switch.
4. Validators move automatically
Validators detect the successor synchronizer, verify consistency, and switch over automatically. Applications continue running under the same logical synchronizer identity.
5. Old infrastructure is retired later
Legacy synchronizers remain available for 30 days before being decommissioned.
No export/import cycle. No rebuilding of validator history. No need for coordinated outages. Just controlled infrastructure transition, and delivery of the latest network capabilities and features.
Built for institutional-grade evolution onchain
Historically, major upgrades on other public networks require complex ecosystem-wide coordination across validators, node operators, exchanges, staking providers, RPC providers, infrastructure companies, and application developers. While impressive, these are usually operationally complex with a high coordination overhead for the network.
Canton’s LSU model aims to eliminate much of that operational burden, maintaining the ongoing resilience of the network, the highest uptime possible and avoiding highly complex coordinated upgrades or the need for everyone to upgrade at once.
In summary LSUs mean:
- Frequent protocol enhancements on an ongoing basis - without ecosystem disruption
- Faster delivery of new capabilities to the network
- Reduced operational burden for Super Validators and Validators
Synchronizers become commodity infrastructure. Upgrades and maintenance become BAU activities, with minimal impact on application developers and end-users. Validator operations become simpler. Just upgrade the binary every week and the rest of the process is automatic.
Canton Network contributors just keep on delivering protocol enhancements and performance improvements without the upgrade challenges that oftern bog down other networks.
With major new capabilities from across the community lining up in the next 6-12 months: advancements to token standards, upgraded BFT consensus and scaling advances, decentralized party management and validation services, asset discovery capabilities and much more - the timing couldn’t be better.
This is institutional infrastructure for finance that flows.
For more information read the docs, release notes and the earlier approved governance proposal, CIP-0117.
