If you’re addressing Bart, he’s not here. This section is where we members post stuff. The answer to your question probably depends on what you mean by “finalized.”  The original version was indeed adopted at the Nicene Council in 325, but a more final version was agreed to in Constantinople in 381. In between those dates, Arian Christianity come to predominate a few times depending on what various emperors believed. Here’s an article for more info. ** you do not have permission to see this link **