Receipts in new apps and app updates submitted to the App Store, as well as all apps in sandbox, will be signed with the SHA‑256 intermediate certificate. If your app verifies App Store transactions using the AppTransaction and Transaction APIs, or the verifyReceipt web service endpoint, no action is required.

If your app validates App Store receipts on device, make sure your app will support the SHA-256 version of this certificate. New apps and app updates that don’t support the SHA-256 version of this certificate will no longer be accepted by the App Store starting August 16, 2023.