Applying for an as-yet unborn puppy

If we want to apply to strata for a dog, and the dog is yet to be purchased from a registered breeder, how do we go about completing the application?

i.e. no records, no references – other than previous doggy parents’ kids, profiles, etc.

Love to hear from people who have success, and particularly those who faced challenges along the way but with an ultimate success.

Thanks!