the only way to prove you're not wallhacking (or for anyone to fully prove it imo), is to play a game with the admins, and take video footage from OFF screen, (many hacks can remove the visuals form screenshots/video taken ingame) and compare with what the mods/admins see as wallhacky actions/kills.
Also i feel that if you were really really hardcore and super good, you would be playing with ppl of your caliber, and not wasting your time with our happy little family of "noobs."
and i forgot who said it, but yea, i have noticed a lot of cheaters saying "where's the proof" as if they think hiding it well enough discounts them from being banned. I have full confidence in the group of mods in this clan and their ability to thoroughly investigate any problems and make decisions accordingly. Having said this, I do not think it is necessary for them to produce concrete material evidence, such as you are asking for. This is not a court of law, and your being allowed to play on the server is a privelage. Get over it and play with your "pro" friends.
Having said that, the fact remains clear that you cheated. Even if we had NO EVIDENCE whatsoever that you cheated, and you were banned for cheating, you would still have NO RIGHT to get angry about it. You do not have a right to cheat UNTIL YOU GET CAUGHT. What the fuck kind of logic is that. I hope that is not what is going through your mind.