Speaking of Craig Wright - his recent application to the US copyright office related to btc and whitepaper, this is what the US copyright office had to say -

“As a general rule, when the Copyright Office receives an application for registration, the claimant certifies as to the truth of the statements made in the submitted materials. The Copyright Office does not investigate the truth of any statement made,” the Copyright Office wrote in a press release. “In a case in which a work is registered under a pseudonym, the Copyright Office does not investigate whether there is a provable connection between the claimant and the pseudonymous author.”

 Anyone can file for a copyright, personally I still maintain my doubts that Wright is Satoshi, it seems unlikely.