I don't think you understood my concern. The problem is if a signature stored in a legacy DNS record is used to verify a "registration" of a Namecoin domain, ev

I don't think you understood my concern. The problem is if a signature stored in a legacy DNS record is used to verify a "registration" of a Namecoin domain, every Namecoin client needs to see the exact same "view" of that record, otherwise some Namecoin clients will consider it valid and some will consider it invalid, forking the Namecoin blockchain.