Maybe, one day, we'll find a PGP signed "I am Satoshi Nakamoto" in someone's last will.
If he/she/they won't do this or if PGP is broken by then we will never know for sure.
If he/she/they won't do this or if PGP is broken by then we will never know for sure.
Unless they have already put encrypted messages into the existing blockchain using different algos with such a signed message- Then they could use another signature to prove they signed the message with PGP before PGP was broken.
Szabo wrote a little about gwern here: http://unenumerated.blogspot.com/2011/05/bitcoin-what-took-y...
I annotated with explanations of what I mean:
http://genius.it/unenumerated.blogspot.com/2011/05/bitcoin-w...