I'm sure he/she/they are still around
I think in order to help you find your answer to where they are now, it'd be good to know where they came from first
I'm not a conspiracy fan so to speak but I do have an open mind and accept conspiracies are a part of life... like the desire of the financial elite to have a single world currency
If you wanted a currency that is highly traceable then bitcoin is perfect
Bitcoin by the people for the people as the antidote to the fraudulent system we have right now is almost too good to be true it's like a fairy tail... but that doesn't mean it's not true
Still it's worth keeping an open mind... have you seen this link before:
https://groups.csail.mit.edu/mac/classes/6.805/articles/money/nsamint/nsamint.htmCan you authenticate it?... allegedly it was produced in 1996 and pretty much describes bitcoin and blockchain tech
FriedFrank.com allegedly got permission to publish it on MIT servers... maybe you could follow them up for authenticity
If this paper has already been discredited then my apologies for sharing it... it's still a good read even for a non tech
Good luck
p.s. if satoshi is of the people then I wish they remain anonymous... if it's state then it's only right this is revealed... regardless of it's origins the pandora's box of open source code, innovation, fairness and humanitarian altruism has been blown open