[mcs]

The identity could remain unverified for eternity if original keys aren't available, and it's possible there was a deliberate destroying of the keys. Satoshi has said that the losing of coins were a donation to everyone else -- and who else would make a donation to the entirety of the Bitcoin ecosystem other than Satoshi?

[scintill76]

Why not provably destroy them then (send them to an output that can never be spent)?