Overview

Fireblocks regularly updates the API Co-Signer software with stability and feature improvements. This page includes information about the most recent API Co-Signer versions. It is always advisable to use the latest version published here.

Identifying the current API Co-Signer image version

To check your current API Co-Signer version, run the following command on your API Co-Signer server:

docker inspect cosigner | jq -r '.[0].Config.Image'

Image versions

3.7.1 (October 2024)

• Decreased signing latency along with general performance increases
• Remote management capabilities through Fireblocks Console
• Support for more types of approval requests
• Various fixed and improved handling of internal errors
• Timing details are logged after every outgoing network request
• The cosigner version will be reflected in the HTTP User-Agent header 

3.6.5 (February 2024)

• Improved logging for easier problem-solving
• Improved stability, security, and performance
• More flexible deployment options
• Retry mechanism for callback
• Preliminary support for upcoming features
• Updated major and minor dependencies

3.5.0 (August 2023)

• The version includes the changes related to the MPC-CMP security enhancements
• Added support for co-signer retry mechanism enabling the callback handler to respond asynchronously
• Various bug fixes

3.3.0 (January 2022)

• Added support for HTTP network proxy on outbound requests

3.2.0 (December 2021)

• Upgrade the cosigner to a newer version

Older previous versions

• Upgrade the cosigner to a newer version

Validating your Cosigner Image

To check your current API Co-Signer version, run the following command on your API Co-Signer server:

docker inspect cosigner | jg -r '.[0].Config.Image +" " + .[0].Image'