> ## Documentation Index
> Fetch the complete documentation index at: https://developers.fireblocks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# API Co-signers Versions

Below are the version details for each of the Co-signer types:

* [SGX Co-signer version history](/reference/api-cosigner-versions-sgx)
* [AWS Nitro Co-signer version history](/reference/api-cosigner-versions-aws)
* [Google Cloud Confidential Space Co-signer version history](/reference/api-cosigner-versions-gcp)