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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
canton v3.5.2: canton v3.5.2# Release of Canton 3.5.2
Canton 3.5.2 has been released on June 03, 2026.
## Summary
This is a maintenance release that fixes an out of memory issue during synchronizer reconnect, addresses security vulnerabilities in the Canton docker base image, as well as minor improvements.
## Minor Improvements
- Updated the Docker base image to 1.0.8 to address vulnerabilities in Busybox: CVE-2025-46394, CVE-2025-60876.
- Fix sequencer subscription closing errors `Timeout 9 seconds expired, but reade
2026-06-03
