v3.1.2 Release Notes - October 13, 2025

Improvements and Fixes

1. Config update can now be submitted through the channel participation API via a PUT that sends the config update as a multipart/form-data to /participation/v1/channels. The osnadmin tool has been updated accordingly, both contributions from @pfi79.
2. The channel participation API can now be used to fetch blocks, courtesy of @pfi79.
3. BFT orderers can now have their enrollment certificates rotated without requiring a config update as long as the public keys remain the same. Feature contributed by @dviejokfs.
4. TLS Timeshift has been added to the channel participation API, implemented by @pfi79.

Dependencies

Fabric v3.1.2 has been tested with the following dependencies:

• Go 1.25.2
• CouchDB v3.4.2

Fabric docker images on docker.io and ghcr.io utilize Ubuntu 24.04.

Changes and Removals

See the v3.0.0 release notes for changes and removals between Fabric v2.x and Fabric v3.x.