Blender Network uses the official Blender identification system, Blender ID. If you are already part of the Blender Cloud, or have participated on a Blender Conference, chances are you already have a Blender ID.

If you don't have a Blender ID yet, you can create one for free at Afterwards just login on Blender Network

Your Blender ID is now valid across all the official Blender websites, including Blender itself via the Blender ID add-on!