Not sure what you mean by verify, do you suspect parentage or purity?
Nobody is a member of the ANKC, its members are the state canine controls, but purebred registered dogs in Australia are registered via their state body on the ANKC database...............Dogs Qld members have access to this database..........you could get a DQ member to search for the pedigree
If you suspect parentage, you collect all info you can and submit in writing to DQ in the first instance..........
I am suspect about parents on one side but would also like to compare pedigrees of related dogs with information that I have found elsewhere.