Even if you can get a direct confirmation from the breeder, that would not mean everything. Too many pedigrees are not fully correct. Even the ones with registered parents are not always 100% correct. If I use a male from next door and get an owner of a great ch. male to sign my studcard, that ch. male is the father on the pedigree. Only DNA can proof otherwise and even DNA is not always 100% correct, since mutations can and do happen. I know a dog that according to the DNA test is not from his mother or father. Yet he resembles his father very much. And I know 100% sure that he is from that litter. A mutation made the DNA test fail both parents
When I got my Delilah, she was without pedigree. A pedigree was promised to me, but later they just never handed it over. And since she was not tattoed, I think she never had one in the first place. I did not mind that much since it was a not FCI recognized breed. A pedigree would not be valid in Holland anyway. When the breed was recognized several people have offered me Italian pedigrees for her, so that I could breed her. I choose for a first generation pedigree. Since for a short time that was not possible in Italy, I got her a first generation RISH in Belgium. As valid as a first generation Italian LIR. I have been under attack many times for this on public forums. If I would have just gotten a false Italian LIR, no one would have known or attack me. The honest way is not the easiest way
And to be completely honest, if I would have this situation again, I might just take the easy way and go for that Italian LIR. This is the way it has been done many many times in the past (and probably still is being done). Just like when a male without pedigree is used on a female with pedigree, the pedigree of another male is used for the pups' pedigrees.
At this moment, I have only 1 dog with a 100% correct pedigree. My Stefany. Mother Delilah (first generation pedigree) father Ciro (also first generation pedigree). I was there when she was made and am 100% sure that the parents on the pedigree are really her parents. She has nothing on the pedigree in the second generation. So I'm 100% sure her pedigree is correct. The others.......... It's a matter of hoping that the pedigrees are correct. But that's something I can never be sure of 100%. I was not there to witness all the matings and to make sure no other males have mated those females during those heatcycles