Satoshi, you must:
send 1 BTC to each of the 1 million active BTC addresses in the blockchain. Now! In plain sight, to prove you have nothing left.
And be gone.
(I only pray he's got all those private keys... otherwise - trouble).
He must do jackshit, it's his money and he can do with it whatever the hell he wants.
Dude -- the point here is -- he must lose his million BTC -- fast and in public!
Otherwise every "admirer" from a local bum with a clawhammer to town cops, to cartels with bazookas will be coming after him & his family. For the untraceable billion dollars as mentioned elsewhere.
Gods help this man
He must not lose anything at all. If he is really that rich, he can acquire some security, there are people far more rich than him who don't live in fear of dying..