This sounds like Craig Wright claiming he owns Satoshi wallets and that he is satoshi. If there is no proof of ownership there is a 99.9% chance that the claimant is not the owner. If all the information about the wallet and even the .dat file has been made public (fake or real) it means as obviously stated many persons would be working on the solution. Take puzzle 64 for example, hundreds of thousands of combined man hours, electricity and processing power went into finding a solution in the past 2 to 3 years, and to my knowledge we still dont know who solved it. Many attention seekers make the claim, but where is the proof. This means we do not know who moved p64 and we would resonably not know who moved a publicly exposed .dat file balance. Imagine, it could be the actual owner or some bot.
Alberto, keep your guard up, hopefully members of the community who are capable of assisting in any legal framework will come forward to assist. I say dont sweat it, the burden of proof is on the person making what seems to be conjecture stemming from their failure to successfully break into that wallet