◎ Radar
Breaking changes · deadlines · upgrades, refreshed every 15 min
6critical·13important·8ecosystem
CRITICALRELEASEValidatorsDevelopers
# Release of Canton 3.5.1
Canton 3.5.1 has been released on May 27, 2026.
## What’s New
### Contract Keys
#### Overview
Canton 3.5 introduces contract keys. Compared to a similar feature available in Canton 2.x, there are two notable
differences:
- The keys are not unique, meaning multiple contracts may share the same key.
- Negative lookups are not validated.
As a consequence, application developers must ensure key uniqueness through external enforcement mechanisms.
Contract keys are avai
2026-05-27
IMPORTANTRELEASEDevelopers
# Release of Canton 3.5.3
Canton 3.5.3 has been released on June 03, 2026. You can download the Daml Open Source edition from the Daml Connect [Github Release Section](https://github.com/digital-asset/daml/releases/tag/v3.5.3). The Enterprise edition is available on [Artifactory](https://digitalasset.jfrog.io/artifactory/canton-enterprise/canton-enterprise-3.5.3.zip).
Please also consult the [full documentation of this release](https://docs.daml.com/3.5.3/canton/about.html).
## Summary
This i
2026-06-04
