IMO, it is a worthless, totally worthless registration. According to the CKC website, all you have to do is fill out a registration application and sending in a registration from an approved list, which included ACA and APRI, two other worthless registries, or, an this is a quote from the CKC website:
2.Dogs over 6 months of age which have no previous Registration history may be registered by providing 2 witness signatures attesting to the purebred status of the dog along with 3 photos (front,left and right) of the dog to confirm it is ‘of proper breed type’ as defined by our current CKC Registration Rules and Regulations.
Canine Registration Applications are available in PDF format from our web site. So basically, the dog doesn't have to be pure bred, just look pure bred.
IMO, your friend got took.