Heads up, Creators: On Dec 13-14 you may see a noticeable decrease in your sub count as we remove spam subscriptions. If spam is removed, you'll see a YouTube Studio alert: https://goo.gl/qGDBvX This should help give you confidence that the subs you do have are real fans!
This is a normal part of how YouTube verifies that views are real and accurate. You may see views slow down, freeze, or adjust during this process. Here's more info: https://goo.gl/S7DIry