diff --git a/webapp/controller/BlockChainController.class.php b/webapp/controller/BlockChainController.class.php
index cb2dcffc..778b2071 100644
--- a/webapp/controller/BlockChainController.class.php
+++ b/webapp/controller/BlockChainController.class.php
@@ -219,44 +219,51 @@ class BlockChainController extends BaseAuthedController {
         }
     }
 
-    private function internalBcCall($params, $transParams, $cb = null) {
-        $propertyChgService = new services\PropertyChgService();
-        $propertyChgService->addUserChg();
-        $url = self::getWeb3ServiceUrl();
-        $response = '';
-        if (!phpcommon\HttpClient::get
-            ($url,
-             $params,
-             $response)) {
-            myself()->_rspErr(500,  'server internal error');
-            die();
-            return;
-        }
-        error_log($response);
-        $rspObj = json_decode($response, true);
-        if ($rspObj['errcode'] == 0) {
-            $transId = $rspObj['trans_id'];
-            Transaction::add(
-                $transId,
-                $transParams['action'],
-                $transParams['tokenId'],
-                $transParams['tokenType'],
-                $transParams['itemUniId'],
-                $transParams['itemId'],
-                $transParams['result']
-            );
-            if ($cb) {
-                $cb($transId);
+    private function internalActivate721Nft($tokenId, $tokenType, $itemUniId, $itemId)
+    {
+        $params = array(
+            'c' => 'BcService',
+            'a' => 'activate721Nft',
+            'account_id' => myself()->_getAccountId(),
+            'session_id' => myself()->_getSessionId(),
+            'account' => myself()->_getAddress(),
+            'token_id' => $tokenId,
+            'token_type' => $tokenType,
+            'item_uniid' => $itemUniId,
+            'item_id' => $itemId
+        );
+        {
+            $url = self::getWeb3ServiceUrl();
+            $response = '';
+            if (!phpcommon\HttpClient::get
+                ($url,
+                 $params,
+                 $response)) {
+                myself()->_rspErr(500,  'server internal error');
+                die();
+                return;
+            }
+            error_log($response);
+            $rspObj = json_decode($response, true);
+            if ($rspObj['errcode'] == 0) {
+                $transId = $rspObj['trans_id'];
+                Transaction::add(
+                    $transId,
+                    Transaction::MINT_721_ACTION_TYPE,
+                    $tokenId,
+                    $tokenType,
+                    $itemUniId,
+                    $itemId,
+                    1
+                );
+                myself()->_rspData(array(
+                    'trans_id' => $transId,
+                    'params' => $rspObj['params']
+                ));
+            } else {
+                myself()->_rspErr(500,  'server internal error');
+                return;
             }
-            myself()->_rspData(array(
-                'trans_id' => $transId,
-                'params' => $rspObj['params'],
-                'property_chg' => $propertyChgService->toDto(),
-            ));
-        } else {
-            myself()->_rspErr(500,  'server internal error');
-            die();
-            return;
         }
     }