New interesting scenarios arise with Locked tokens, like: a. you submit a file on Happydox free minter for possible future copyright confirmation. b. R-H mints a new HD token and you receive the PK from which it's minted - you're the owner c. still this token is Locked, so you can't share link to your file - which means you can't take it to copyright hearings in court. So far, no money was paid, all is free. d. you need this token to prove your copyright in court, so you ask R-H to 'Unlock'. e. which we of course can do if you pay your 50$ (or 50c?).