Its impossible to prove that allinvain has indeed lost his money and not just moved it himself.
Not necessarily. There is always some uncertainty but one can indeed show strong proof. You need my wallet.dat file. I also have another wallet.dat file that shows me transferring 50 BTC to the main wallet file that got stolen. This would show proof of continuity. My control of the coins ends right when they were moved while I was sleeping to this address:
1KPTdMb6p7H3YCwsyFqrEmKGmsHqe1Q3jg
This address has some links to the computer underground - further proof that it was indeed not me moving them.
Not good enough. Not even close.
You may know whoever has the address. It could be your hired hand. Your brother. It might even be you.
There is no way to even be somewhat convinced that you have and had no influence over all relevant addresses. Even if I knew you personally, it might be a hard call. Thing is, I don't know you personally.
Sorry for your loss. I'd be pretty distraught to have had that much stolen from me. But no way am I supporting screwing other people (including myself) over because of your claims.