I'm migrating my app to Store Kit V1, to Store Kit V2, and, due some legacy circumstances I'm implemented in past using a synchronous method, calling verify receipt on my server to validate receipt and do the needed business logic, but due to the deadline I changed the entire app integration and some questions starting to appear in my mind.
First of all, when I processing the purchase when basically I will receive the notification? When the Store Kit calls the transaction.finish or after the purchase was successful I always will receive this notification?