So far I can't tell what's true about all this. It also seems like it'd be easy for someone to claim to be the pseudonymous creator of Bitcoin. I've only seen information about this from main stream sources. Does anyone know anything beyond the current main-stream narrative?
If someone purporting to be 'Satoshi Nakamoto' wanted to prove it, he/she could do so by signing a message using one of the same signing keys that 'Satoshi Nakamoto' used to sign one of his early messages during the release of bitcoin. Or, he/she could announce that they will make a bitcoin payment from an address believed to belong to 'Satoshi Nakamoto' to some other address, then actually do so.
I'm literally just reading the Gizmodo piece as well. This piece is based off of a month long investigation where they've done some really good journalistic reporting. Highly recommended.