@John *******
I don't know what they do nor what they can see, in general, as each embassy is different. In my case, when I applied at my local embassy (Seoul, Korea) for the DTV, they did ask for a certificate of entry and exits issued by the Korean government, just to make sure I was at Korea in the moment. This, deposite I had uploaded a photo of my Korean residence card, to justify why I chose that embassy.