Will it be very difficult to identify whether he is real or not, because satoshi is already committed to being anonymous and we ourselves don't know how to determine whether a person or organization is a satoshi or not. I think we need some proof or something that can identify him as a satoshi, before we have to predict anyone. Without evidence, it is only a prediction and there is no definite truth.
Satoshi was Satoshi. Nakamoto is Nakamoto.
The evidence sought exists, like an open ledger. I'm 99.99% certain.
Vitalik Buterin is
not Satoshi.
99.99% Sergey Nazarov had nothing to do with the creation of Bitcoin.
Cortana is likely not Satoshi either.