@jplehmann, I guess I’m confused at what you’re trying to accomplish. Are you looking for a Square provided way to guarantee the shipping address is in fact the address that’s associated to the card the customer is entering. If so that’s not possible.
Also customers have the ability to enter a shipping address that’s not associated to the customer that’s making the purchase at all. This may happen when they purchasing a gift to someone and sending it directly to them as one example. We have thing like Risk Manager that help verify the buyer and mitigate fraud behavior but we don’t have a way of verifying any additional information other than what’s documented. Let me know if you have any additional questions. 