1 files changed, 16 insertions, 3 deletions
diff --git a/src/include/taler_merchantdb_plugin.h b/src/include/taler_merchantdb_plugin.h
index e81dd81f..411b3ff4 100644
--- a/src/include/taler_merchantdb_plugin.h
+++ b/src/include/taler_merchantdb_plugin.h
@@ -69,7 +69,7 @@ struct TALER_MERCHANTDB_Plugin
    * @param refund refund deadline
    * @param amount_without_fee amount the mint will deposit
    * @param coin_pub public key of the coin
-   * @param merchant_pub our public key
+   * @param mint_proof proof from mint that coin was accepted
    * @return #GNUNET_OK on success, #GNUNET_SYSERR upon error
    */
   int
@@ -81,8 +81,21 @@ struct TALER_MERCHANTDB_Plugin
                     struct GNUNET_TIME_Absolute refund,
                     const struct TALER_Amount *amount_without_fee,
                     const struct TALER_CoinSpendPublicKeyP *coin_pub,
-                    const struct TALER_MintSignatureP *mint_sig);
+		    json_t *mint_proof);
 
-};
+  /**
+   * Check whether a payment has already been stored
+   *
+   * @param cls our plugin handle
+   * @param transaction_id the transaction id to search into
+   * the db
+   *
+   * @return GNUNET_OK if found, GNUNET_NO if not, GNUNET_SYSERR
+   * upon error
+   */
+  int
+  (*check_payment) (void *cls,
+                    uint64_t transaction_id);
 
+};
 #endif