diff --git a/server/web3service/blockchain.js b/server/web3service/blockchain.js
index 3bd7e03..2bf7fbd 100644
--- a/server/web3service/blockchain.js
+++ b/server/web3service/blockchain.js
@@ -97,7 +97,7 @@ class BlockChain {
       break;
     case bcutils.CLAIM_BOX_TYPE:
       {
-        return this.getContractByName('claimbox')['address'];
+        return this.getContractByName('NFTSbt')['address'];
       }
       break;
     default:
diff --git a/server/web3service/metadata/MarketDb.js b/server/web3service/metadata/BlockChainDb.js
similarity index 50%
rename from server/web3service/metadata/MarketDb.js
rename to server/web3service/metadata/BlockChainDb.js
index d8d8956..f258b04 100644
--- a/server/web3service/metadata/MarketDb.js
+++ b/server/web3service/metadata/BlockChainDb.js
@@ -1,8 +1,8 @@
 const utils = require('j7/utils');
 const basewrap = require('./basewrap');
 
-class MarketDb extends basewrap.BaseWrap {
+class BlockChainDb extends basewrap.BaseWrap {
 
 }
 
-module.exports = MarketDb;
+module.exports = BlockChainDb;
diff --git a/server/web3service/metadata/factory.js b/server/web3service/metadata/factory.js
index 19a6768..d5b7d00 100644
--- a/server/web3service/metadata/factory.js
+++ b/server/web3service/metadata/factory.js
@@ -92,7 +92,7 @@ async function init() {
                    );
   registerMetaClass(configDir + 'blockchaindb_mysql.json',
                     '',
-                    'MarketDb'
+                    'BlockChainDb'
                    );
   registerMetaClass(configDir + 'web3service.cluster.json',
                     '',