SGX API Co-signer Version History

Fireblocks updates the API Co-signer software to include stability enhancements and new features. This article provides details about the most recent SGX Co-signer versions. Always use the latest version listed here for optimal performance.


SGX Co-signer image version history

Version 3.6.5 (February 2024)

  • Improved logging for easier problem-solving.
  • Improved stability, security and performance.
  • Enhanced deployment flexibility.
  • Added support for Callback Handler retry mechanism, enabling the Callback Handler to respond asynchronously.
  • Updated major and minor dependencies.
  • Preliminary support for upcoming features.
  • Bug fixes.

Version 3.5.0 (August 2023)


Version 3.3.0 (January 2022)

  • Added support for HTTP network proxy on outbound requests.
  • Bug fixes.


Identifying your running SGX Co-signer image version

To check your running SGX Co-signer image version, run the following command on your VM:

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


SGX Co-signer script version history

Version 1.1.9 (February 2024)

  • New default docker image 3.6.5

Version 1.1.8 (January 2024)

  • Added support for Callback Handler configuration via Azure Marketplace
  • Same default Docker image as in image version 3.5.0 and used as in script version 1.1.7

Version 1.1.7 (August 2023)

  • New default Docker image 3.5.0

Version 1.1.6 (February 2023)

  • Added support for Docker version 1.29.2
  • Added validation for microcode:
    • Additional information about the microcode version appears in the logs
    • Relevant only to customers with SGX Co-signers installed on-prem
  • Added validation to make sure Hyper-Threading is disabled
    • If Hyper-Threading is enabled, additional information appears in the logs
    • Relevant only to customers with SGX Co-signers installed on-prem

Version 1.1.5 (February 2022)

  • New default Docker image 3.3.0
  • Added support for Co-signers in high-availability
  • Updated authentication model
  • Added support for HTTP network proxy on outbound requests


Identifying your SGX Co-signer script version

To check your running SGX Co-signer script version, run the following command on your VM:

 head cosigner -n 3 | grep -i ver