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3.5.19

Release of Canton 3.5.19

Canton 3.5.19 has been released on September 23, 2026.

Summary

This is a maintenance release that brings improvements to CantonBFT.

What’s New

CantonBFT Improvements

  • Raised some log thresholds around epoch/topology transition to INFO to troubleshoot issues with the orderer not being able to make progress in some scenarios.
  • Fixed an OutputModule memory leak caused by abandoned block state during recovery and view changes.
  • Fixed race conditions in the creation of P2P connections that could lead to warnings and P2P connection management misbehavior.
  • Limit how many commit certificates are sent in a single retransmission message to avoid exceeding the maximum message size.

Minor Improvements

  • Bump AWS SDK version to 2.55.2 to address a security vulnerability in a dependency

Compatibility

The following Canton protocol versions are supported:
DependencyVersion
Canton protocol versions34, 35
Canton has been tested against the following versions of its dependencies:
DependencyVersion
Java RuntimeOpenJDK 64-Bit Server VM (build 21.0.12+2-nixos, mixed mode, sharing)
PostgresRecommended: PostgreSQL 17.11 (Debian 17.11-1.pgdg13+2) – Also tested: PostgreSQL 14.24 (Debian 14.24-1.pgdg13+2), PostgreSQL 15.19 (Debian 15.19-1.pgdg13+2), PostgreSQL 16.15 (Debian 16.15-1.pgdg13+2), PostgreSQL 18.6 (Debian 18.6-1.pgdg13+2)