ios - Writing own iTunes IAP receipt validation server, unique data in receipt? -


i'm trying validate own receipts iap. i'm facing few problems regarding finding constant data point can check uniqueness.

the first problem large number of receipts have status: 0 yet, in_app field empty array. meaning there no transaction_id, original_transaction_id.

i've seen question asked here , on apple support forums haven't seen decisive or official answers on these types of receipts- valid, etc.

the 2nd problem finding unique data point. if ignore case of empty in_app field, , take care of receipts transaction_id.

is there legitimate scenario transaction_id shows twice? or verified fake receipt?


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