I have a C# program I wrote using the Youtube API V3 that manages my channel's videos. I already have all the OAuth 2.0 stuff sorted out and I'm looking for a way to tell Youtube that the authenticated account watched the video. The reason being that I use the "watched" feature to determine which of the videos in my feed is the last one I actually watched.
Is there a way to do that? Or is it purposefully not in the API because it messes with the view count?
Of course I checked Google and Google's API reference first, didn't find anything.