Why not buy a gift credit card, and not use your actual identity to purchase the registration? They don't appear to require any rigorous proof of identity.
The point is to avoid casual easy association via a name/address lookup, not defend against in-depth analysis from entities that know everyone in real life and in the database.
Plus, you could be an unmentioned adopted-out person, which would look identical, so they couldn't prove it was you without further examination.