It's a low value Bitcoin fork from Craig Wright, a delusional dude who claims to be Satoshi, so he made a fork where he could control all the Satoshi coins. "SV" means "Satoshi's Vision".

That's crazy. If he is satoshi what's his excuse for not having the private keys to those coins in the main bitcoin network?

It would be incredibly stressful for him to prove it, nay as much as he would like to be vindicated, the risk of the fame and the pressure blah blah blah.

Sorry I can't be bothered to look up the actual quotes but they're similarly incoherent. He pretends to have them but not to want to use them, even to prove his claims.

To summarize:

In conclusion, if he is unable to prove he is Satoshi, he therefore cannot claim to say he is Satoshi, unless he can prove otherwise; but so far he has not.

So hence the above unless proven, he is not Satoshi.

QED.