diff --git a/src/mintdb/perf_taler_mintdb_init.c b/src/mintdb/perf_taler_mintdb_init.c
index 2fe978f64..5c18c664e 100644
--- a/src/mintdb/perf_taler_mintdb_init.c
+++ b/src/mintdb/perf_taler_mintdb_init.c
@@ -534,24 +534,13 @@ PERF_TALER_MINTDB_coin_public_info_free (struct TALER_CoinPublicInfo *cpi)
  */
 struct TALER_MINTDB_RefreshMelt *
 PERF_TALER_MINTDB_refresh_melt_init (struct GNUNET_HashCode *session,
-                                     struct TALER_MINTDB_DenominationKeyIssueInformation *dki)
+                                     struct PERF_TALER_MINTDB_Coin *coin)
 {
   struct TALER_MINTDB_RefreshMelt *melt;
-  struct GNUNET_CRYPTO_EddsaPrivateKey *coin_key;
-  struct TALER_CoinPublicInfo cpi;
-  struct TALER_CoinSpendSignatureP coin_spent;
+  struct TALER_CoinSpendSignatureP coin_sig;
   struct TALER_Amount amount;
   struct TALER_Amount amount_with_fee; 
 
-  coin_key = GNUNET_CRYPTO_eddsa_key_create ();
-  cpi.denom_pub = dki->denom_pub;
-  GNUNET_CRYPTO_eddsa_key_get_public (coin_key, 
-                                      &cpi.coin_pub.eddsa_pub);
-  GNUNET_assert (NULL !=
-                 (cpi.denom_sig.rsa_signature = 
-                  GNUNET_CRYPTO_rsa_sign (dki->denom_priv.rsa_private_key,
-                                          &cpi.coin_pub.eddsa_pub,
-                                          sizeof (struct GNUNET_CRYPTO_EddsaPublicKey))));
   {
     struct 
     {
@@ -562,22 +551,21 @@ PERF_TALER_MINTDB_refresh_melt_init (struct GNUNET_HashCode *session,
     to_sign.purpose.purpose = GNUNET_SIGNATURE_PURPOSE_TEST; 
     to_sign.purpose.size = htonl (sizeof (to_sign));
     to_sign.session = *session; 
-    GNUNET_CRYPTO_eddsa_sign (coin_key,
+    GNUNET_CRYPTO_eddsa_sign (&coin->priv,
                               &to_sign.purpose,
-                              &coin_spent.eddsa_signature);
+                              &coin_sig.eddsa_signature);
   }
-  GNUNET_assert (GNUNET_OK == TALER_string_to_amount (CURRENCY ":10.0",
+  GNUNET_assert (GNUNET_OK == TALER_string_to_amount (CURRENCY ":1.1",
                                                       &amount));
   GNUNET_assert (GNUNET_OK == TALER_string_to_amount (CURRENCY ":0.1",
                                                       &amount_with_fee));
   melt = GNUNET_new (struct TALER_MINTDB_RefreshMelt); 
-  melt->coin = cpi;
-  melt->coin_sig = coin_spent;
+  melt->coin = coin->public_info;
+  melt->coin_sig = coin_sig;
   melt->session_hash = *session;
   melt->amount_with_fee = amount;
   melt->melt_fee = amount_with_fee;
 
-  GNUNET_free (coin_key);
   return melt;
 }
 
diff --git a/src/mintdb/perf_taler_mintdb_init.h b/src/mintdb/perf_taler_mintdb_init.h
index 7a96f66d8..c159770fc 100644
--- a/src/mintdb/perf_taler_mintdb_init.h
+++ b/src/mintdb/perf_taler_mintdb_init.h
@@ -183,7 +183,7 @@ PERF_TALER_MINTDB_coin_free (
  */
 struct TALER_MINTDB_RefreshMelt *
 PERF_TALER_MINTDB_refresh_melt_init (struct GNUNET_HashCode *session,
-                                     struct TALER_MINTDB_DenominationKeyIssueInformation *dki);
+                                     struct PERF_TALER_MINTDB_Coin *coin);
 
 
 /**
diff --git a/src/mintdb/perf_taler_mintdb_interpreter.c b/src/mintdb/perf_taler_mintdb_interpreter.c
index e9ee05e33..45a3002a5 100644
--- a/src/mintdb/perf_taler_mintdb_interpreter.c
+++ b/src/mintdb/perf_taler_mintdb_interpreter.c
@@ -678,7 +678,100 @@ interpret (struct PERF_TALER_MINTDB_interpreter_state *state)
         }
         break;
 
-      default :
+      case PERF_TALER_MINTDB_CMD_GET_COIN_TRANSACTION:
+        {
+          int coin_index;
+          struct PERF_TALER_MINTDB_Coin *coin;
+          struct TALER_MINTDB_TransactionList *transactions;
+          
+          coin_index = cmd_find (state->cmd,
+                                 state->cmd[state->i].details.get_coin_transaction.label_coin);
+          GNUNET_assert (GNUNET_SYSERR != coin_index);
+          coin = state->cmd[coin_index].exposed.data.coin;
+          transactions = state->plugin->get_coin_transactions (state->plugin->cls,
+                                                               state->session,
+                                                               &coin->public_info.coin_pub);
+          state->plugin->free_coin_transaction_list (state->plugin->cls,
+                                                     transactions);
+        }
+        break;
+
+      case PERF_TALER_MINTDB_CMD_CREATE_REFRESH_SESSION:
+        {
+          struct GNUNET_HashCode hash;
+          struct TALER_MINTDB_RefreshSession *refresh_session;
+
+          refresh_session = PERF_TALER_MINTDB_refresh_session_init ();
+          GNUNET_CRYPTO_hash_create_random (GNUNET_CRYPTO_QUALITY_WEAK,
+                                            &hash);
+          state->plugin->create_refresh_session (state->session,
+                                                 state->session,
+                                                 &hash,
+                                                 refresh_session);
+          state->cmd[state->i].exposed.data.session_hash = hash;
+          PERF_TALER_MINTDB_refresh_session_free (refresh_session);
+          GNUNET_free (refresh_session);
+        }
+        break;
+
+      case PERF_TALER_MINTDB_CMD_GET_REFRESH_SESSION:
+        {
+          int hash_index;
+          struct GNUNET_HashCode hash;
+          struct TALER_MINTDB_RefreshSession refresh;
+
+          hash_index = cmd_find (state->cmd,
+                                 state->cmd[state->i].details.get_refresh_session.label_hash);
+          hash = state->cmd[hash_index].exposed.data.session_hash;
+          state->plugin->get_refresh_session (state->session,
+                                              state->session,
+                                              &hash,
+                                              &refresh);
+        }
+        break;
+
+      case PERF_TALER_MINTDB_CMD_INSERT_REFRESH_MELT:
+        {
+          int hash_index;
+          int coin_index;
+          struct GNUNET_HashCode hash;
+          struct TALER_MINTDB_RefreshMelt *melt;
+          struct PERF_TALER_MINTDB_Coin *coin;
+
+          hash_index = cmd_find (state->cmd,
+                                 state->cmd[state->i].details.insert_refresh_melt.label_hash);
+          coin_index = cmd_find (state->cmd,
+                                 state->cmd[state->i].details.insert_refresh_melt.label_coin);
+          hash = state->cmd[hash_index].exposed.data.session_hash;
+          coin = state->cmd[coin_index].exposed.data.coin;
+          melt = PERF_TALER_MINTDB_refresh_melt_init (&hash,
+                                                      coin);
+          state->plugin->insert_refresh_melt (state->plugin->cls,
+                                              state->session,
+                                              1,
+                                              melt);
+          state->cmd[state->i].exposed.data.session_hash = hash;
+        }
+        break;
+
+      case PERF_TALER_MINTDB_CMD_GET_REFRESH_MELT:
+        {
+          int hash_index;
+          struct GNUNET_HashCode hash;
+          struct TALER_MINTDB_RefreshMelt melt;
+          
+          hash_index = cmd_find (state->cmd,
+                                 state->cmd[state->i].details.get_refresh_melt.label_hash);
+          hash = state->cmd[hash_index].exposed.data.session_hash;
+          state->plugin->get_refresh_melt (state->plugin->cls,
+                                           state->session,
+                                           &hash,
+                                           1,
+                                           &melt);
+        }
+        break;
+
+      default:
         break;
     }
   }