I found the download_id description in documentation: https://developer.apple.com/documentation/appstorereceipts/responsebody/receipt?changes=latest_minordownload_idA unique identifier for the app download transaction. Can I use " download_id" in receipt to verify whether two different receipts are from the Apple Account? (I found two diffrerent receipts from one Apple Account, these receipts have the same download_id.)Array ( [receipt] => Array ( [receipt_type] => Production [adam_id] => 1148465254 [app_item_id] => 1148465254 [bundle_id] => "*****************" [application_version] => 1 [download_id] => 79017591726215 [version_external_identifier] => 832934132 [receipt_creation_date] => 2019-10-13 04:53:11 Etc/GMT [receipt_creation_date_ms] => 1570942391000 [receipt_creation_date_pst] => 2019-10-12 21:53:11 America/Los_Angeles [request_date] => 2019-10-14 02:34:59 Etc/GMT [request_date_ms] => 1571020499865 [request_date_pst] => 2019-10-13 19:34:59 America/Los_Angeles [original_purchase_date] => 2017-10-13 02:41:13 Etc/GMT [original_purchase_date_ms] => 1507862473000 [original_purchase_date_pst] => 2017-10-12 19:41:13 America/Los_Angeles [original_application_version] => 3 [in_app] => Array ( [0] => Array ( [quantity] => 1 [product_id] => "*****************" [transaction_id] => 390000336030035 [original_transaction_id] => 390000336030035 [purchase_date] => 2019-10-13 04:53:11 Etc/GMT [purchase_date_ms] => 1570942391000 [purchase_date_pst] => 2019-10-12 21:53:11 America/Los_Angeles [original_purchase_date] => 2019-10-13 04:53:11 Etc/GMT [original_purchase_date_ms] => 1570942391000 [original_purchase_date_pst] => 2019-10-12 21:53:11 America/Los_Angeles [is_trial_period] => false ) ) ) [status] => 0 [environment] => Production ) Array ( [receipt] => Array ( [receipt_type] => Production [adam_id] => 1148465254 [app_item_id] => 1148465254 [bundle_id] => "*****************" [application_version] => 1 [download_id] => 79017591726215 [version_external_identifier] => 832934132 [receipt_creation_date] => 2019-10-13 05:00:40 Etc/GMT [receipt_creation_date_ms] => 1570942840000 [receipt_creation_date_pst] => 2019-10-12 22:00:40 America/Los_Angeles [request_date] => 2019-10-14 02:35:28 Etc/GMT [request_date_ms] => 1571020528537 [request_date_pst] => 2019-10-13 19:35:28 America/Los_Angeles [original_purchase_date] => 2017-10-13 02:41:13 Etc/GMT [original_purchase_date_ms] => 1507862473000 [original_purchase_date_pst] => 2017-10-12 19:41:13 America/Los_Angeles [original_application_version] => 3 [in_app] => Array ( [0] => Array ( [quantity] => 1 [product_id] => "*****************" [transaction_id] => 390000336031381 [original_transaction_id] => 390000336031381 [purchase_date] => 2019-10-13 05:00:40 Etc/GMT [purchase_date_ms] => 1570942840000 [purchase_date_pst] => 2019-10-12 22:00:40 America/Los_Angeles [original_purchase_date] => 2019-10-13 05:00:40 Etc/GMT [original_purchase_date_ms] => 1570942840000 [original_purchase_date_pst] => 2019-10-12 22:00:40 America/Los_Angeles [is_trial_period] => false ) ) ) [status] => 0 [environment] => Production )