True, his claims are fake and I agree,
but I ask simple question:
- How can you know exact identity of Satoshi Nakamoto?
You need to know someones identity to say that stated identity is stolen or not.
Satoshis PGP is known and signing with the genesis block means they are Satoshi or have access to Satoshis most private data.
So the best proof is:
Sign a PGP message
Sign a Genesis block message
A lower standard of proof would be:
Sign an from an address that mined an early block.
Convince Theymos to give your bitcointalk account back.
Signing may not give conclusive proof of being Satoshi but signing means that there is a high likelihood that they are Satoshi.
There are not many hackers capable of such feat.
Not signing means that there is a high likelihood that they are NOT Satoshi. It means there is NO proof.
It means that they are as likely as the rest of the worlds population of being Satoshi.