Beginners don't let anyone or any popular figure deceive you.
The simplest thing that anyone can do in this crypto space is proof that they are Satoshi Nakamoto.
It doesn't cost a thing.
Log in to Nakamoto's Bitcointalk account.
Sign messages using Nakamoto's very own Bitcoin wallet address.
People will believe you, atleast start from this, anything apart from these is complete lies, avoid Jack Dorsey, Craig Wright and others, people on here even understand how proof of ownership on bitcoin network works more than them, they are idiots.
If they understood what it means to sign your Bitcoin address as proof of ownership they wouldn't come out claiming to be real Nakamoto, the future is in your hands, do not be fooled.
This is false, I have already explained this in different threats. This is based on past topics and misunderstanding of the time aspect on keys. Neither of the two things that you have written would prove that the person who is doing it is satoshi nakamoto. All of those actions rely on various assumptions for which the chance of invalidity increases through time, and a lot of time has passed so the chance of this has increased dramatically. If I sign a message using Nakamoto's own wallet address, does that mean that I Satofan44 was the persona under the alias satoshi from the past? Even though nothing else resembles satoshi at all?

What about if I did that and started writing exactly like satoshi used to write, would that mean that I was him?
See, the idea is easily dismissed by a counter example. When you talk about keys:
- The chance that the person has access to the keys when they are dormant for very long time decrease.
- The chance that someone else has access to the keys through whatever means increases.
Now we are already at the point where
you should doubt anyone who comes forth to be satoshi, including anyone who signs messages from his known addresses or PGP keys or whatever -- because all of these rely on a trust-based assumption, instead of using a zero-trust model. If we reach a situation where private keys can be derived from public keys, then at that point satoshi is 100% not provable anymore. LLMs enable someone to write exactly like satoshi did and spoof other metrics, quantum computers could eventually enable someone to compromise all his known keys.
Therefore, learn from the basics of Bitcoin.
Do not trust, verify. Verifying a signature that relies on a trust assumption goes against this concept. All of these ridiculous ideas are a relic of the old world where faking things was incredibly hard, you need to let go of the false ideas and embrace the world that we live in. Faking most things is very easy. While you can't fake the signatures or the keys, you can get access to them in various other ways and situations -- depending on who it was, how they were stored, what happened to the person and the keys and so forth.