I started a backup via duplicity without giving it any options. I haven't created any GPG keys myself, so when I ran duplicity, it asked me for a passphrase, then created a key, and successfully backed-up (to BackBlaze B2) with encryption and compression.
Good, but I don't know where the key is stored. Thus if my drive dies then I won't be able to restore the backup.
gpg -k gives no output. Where's the key hiding?