I have some doubts about this demo as well, it could be better recorded to be honest, but still i think u are using something.
As another kind of proof, when u are banned, your counter strike will make a screenshot. It looks like this one:
@ Ghost This screen has name like de_dust2000.bmp and will be placed in your cstrike folder. Please, upload this screen here.
I viewed the demo couple times and i cant say its clean 100% there many strange situations that show me he did not know where enemies was but still in some points he know it. Maybe it was coincidence maybe not but in my opinion its not 100% evidence so i will stay neutral on this post.
@Sir Valecek Luis could you please give your opinion
You can see at cat, I believe you heard the sound. But no one would aim directly at the players head and pre fires the dude before he comes out the corner. (Unless you pre fires the dude at lower body, which could mean you were spamming the wall. But in 1/4 speed you can see you were aiming at the players head)
The 2nd guy whos up the stairs made no sounds whatsoever, you waited there to see if he moves aka means you know he was there aka you have wallhack on.
@rOha Needs your opinion