You're again twisting things around. When people say they are buying bitcoin they don't say they are buying some "open source" code. Are you capable of comprehending the difference between the system and the entries next to addresses?
Dude, just answer the question. Don't be a dick.
What kind of proof are you looking for if you are not willing to check the code of Bitcoin with your own eyes?
I see no code of Bitcoin. I see Satoshi's code that manipulates with numbers. You claim that somewhere in that some revolutionary digital currency exists and that when you pay half a million dollars you get 10 pieces of it. But you provided zero evidence for your claim. All you do is talking about the code, about the system.