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.

Identifying your current API Co-Signer version

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

head cosigner -n 3 | grep VER

Recent version history

Version 1.1.7 (August 2023)

• The version includes the changes related to the MPC-CMP security enhancements
• Added support for co-signer retry mechanism to re-initiate the transaction signing attempt in case of momentary network issues reaching Fireblocks services. 
• Various bug fixes

To validate this API Co-Signer version, make sure it matches the expected checksum:

MD5 (cosigner-v1.1.7) = 703366381aa535a0aab2a6b4330b1c96

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 on the logs.
  • Relevant only to customers with API-Cosigners installed on-prem.
• Added validation to make sure Hyper-Threading is disabled
  • If Hyper-Threading is enabled, additional information appears on the logs.
  • Relevant only to customers with API Co-Signers installed on-prem.

To validate this API Co-Signer version, make sure it matches the expected checksum:

MD5 (cosigner-v1.1.6) = 33f2f93d02371d119bc31cb4fec8a013

Version 1.1.5 (February 2022)

• Added support for API Co-Signers in high-availability
• Updated authentication model

To validate this API Co-Signer version, make sure it matches the expected checksum:

MD5 (cosigner-v1.1.5) = 0cde4b64661616488f0c4f0e9c37f265

Version 1.1.4 (December 2021)

• Various bug fixes
• Added support for deployment via a network proxy

To validate this API Co-Signer version, make sure it matches the expected checksum:

MD5 (cosigner-v1.1.4) = f1d240e0ee1e3ce51b7aedc57fbee82e