For future reference, it would be good to include a clear picture of the person you're spectating, change the view to show their nametag or something like that. Of course there's stuff like in xclav4 when he dies where the player identity can be mostly verified but throughout all 5 of those demos you never actually show who you are spectating.
Ah thanks for the hint. Of course when I record the demo and spectate him, I see on the bottom bar who I am spectating. Wasn't aware that this is not visible in the demo (even though i should probably know after all the years...). :-D
I mean with drive feature, this probably should also work for verification, but of course that would be additional work that one would like to avoid. ;-)