Does anyone know who the author of the puzzle is?JPL?…
Adam Back
I think it's
Satoshisatoshi himself. The way
Satoshi@satoshi and
satoshi_rising@saatoshi_rising break up their sentences is the same.
Looking at their posts, they both like to leave two spaces after a period.
@saatoshi_rising: "I am the creator" is also quite thought-provoking. Does it refer to the creator of the puzzle, or the creator of bitcoin? 
Of course, this is just my guess.