Having Trouble validating In-App Purchases on 3rd Party Server

I am having trouble getting the proper receipt to validate the purchase. I break the In app purchase information from the “make in app purchase” blueprint node but it only returns the sha1 hash opaque receipt. Is there a way to retrieve the other (main) receipt in order to send it to https://buy.itunes.apple.com/verifyReceipt to verify it. Any help on the topic is great.