Starting January 18, 2023, the App Store receipt signing certificate will use a new WWDR intermediate certificate. The existing intermediate certificate expires on February 7, 2023. In most cases, this certificate change won’t require changes to apps. However, we recommend reviewing how you verify the sale of your apps and in-app purchases from the App Store to make sure your apps aren’t impacted.
If you verify App Store transactions using the AppTransaction and Transaction APIs, or the verifyReceipt web service endpoint, no action is required.
If you validate App Store receipts on device using the App Store receipt signing certificate, make sure you haven’t hardcoded the intermediate certificate and verify that the chain of trust for the container’s signature matches the Apple Inc. Root Certificate.
Additional details on App Store receipt validation:
Validating receipts with the App Store
Choosing a receipt validation technique