By the way, while it might sound like a scam, it may not be. Just go about the whole process intelligently and see what you come up w/ if you're seriously interested.
I'd think that you'd want to get either the microchip number and/or tattoo number of this puppy and have it be matched up in some photos. (puppies produced overseas w/ registry are often microchipped and/or tattooed) Further, if the process goes through further, I'd have a signed document in hand regarding any health guarantees and so on in hand prior to the puppy being shipped or payments received. You can always verify a pedigree on-line or over the telephone and if you'd like help w/ that I'm home on bed rest and so I'd be available to help you if you'd like.
If you get anything further on this seller, please post up!