Is this resistant to domains being taken down for "copyright" reasons, which has shown that one does not really own the domain and is at a whim of a registrar.
Old dns entries would be recorded in the ledger forever. You would just have to write a client that ignores revocations/reassignments/updates for a chosen domain.
But in principle the registrar can still do with its domain whatever it likes for any or no reason.
But in principle the registrar can still do with its domain whatever it likes for any or no reason.