I don't think they're suggesting storing them in base32/58/64, but just having that be how they're presented to the user. We do this in some of our APIs- if the

I don't think they're suggesting storing them in base32/58/64, but just having that be how they're presented to the user. We do this in some of our APIs- if the URL has an ID of a specific length we try to turn it into a full UUID first before passing it on to other code. In the postgres database, the ID column is still a UUID type.