We always wonder who the real master mind behind the name of Nakamoto Satoshi the creator of bitcoin is.But what exactly would make you believe or convince you that "this" person is Satoshi if he/she ever decided to reveal himself.
There might be infinite wannabes and glory hunters wanting to rise to fame ,given the real Satoshi is one among them how would you go on about finding the right person.
There is nothing that makes it all right proving Him as Satoshi if he Can Sign a Message and move the funds (that 1 million bitcoin or less depend on his interest) for this maybe the whole crypto community will listen and believe it was Him, though i doubt this will ever happen in front of everyone , if Satoshi decide to move the funds he will do this silently and no one will ever know (of course we can follow the transactions) .