> The bitcoin ledger itself is quantum safe because addresses are hashes of public keys rather than just naked public keys.
This is true of later addresses, but in early times, addresses were naked public keys, and tons of bitcoins are thus vulnerable to slow quantum computers.
I could have sworn that hashing the pub key was all the way back in the whitepaper. In any case are any "naked pub key" coins still left unspent? I'd reckon that if they are actively owned by someone than that person can forward to a secure address when QC becomes practical and if they are "lost" then who cares if someone with a QC comes and claims them?
This is true of later addresses, but in early times, addresses were naked public keys, and tons of bitcoins are thus vulnerable to slow quantum computers.