They do this. https://developer.apple.com/library/archive/releasenotes/General/ValidateAppStoreReceipt/Introduction.html https://developer.apple.com/library/ar

They do this. https://developer.apple.com/library/archive/releasenotes/General/ValidateAppStoreReceipt/Introduction.html https://developer.apple.com/library/archive/releasenotes/Gen...