Dailychanges monitors authoritative name server information, this is unrelated to registrar.
You can have your DNS with GoDaddy but still transfer your domain registration to namecheap/gandi/anyone else. In fact, for people not wanting any downtime this is very likely what they did.
You can have your DNS with GoDaddy but still transfer your domain registration to namecheap/gandi/anyone else. In fact, for people not wanting any downtime this is very likely what they did.