Those iso's on the gentoo.org site have contents and digests files tat accompany them. To attempt a proper iso image download would the gpg -v livecdxxx.iso command be all that's needed provided the contents and digests are also in the same directory? I know for sure I've downloaded bad gentoo images given media errors that always happen when trying an installation, I just want to be certain what I do to verify images before installation is the right procedure.