diff --git a/server/web3service/metadata/Contract.js b/server/web3service/metadata/Contract.js
deleted file mode 100644
index a347a12..0000000
--- a/server/web3service/metadata/Contract.js
+++ /dev/null
@@ -1,8 +0,0 @@
-const utils = require('j7/utils');
-const basewrap = require('./basewrap');
-
-class Contract extends basewrap.BaseWrap {
-
-}
-
-module.exports = Contract;
diff --git a/server/web3service/metadata/Web3.js b/server/web3service/metadata/Web3.js
deleted file mode 100644
index c2193ad..0000000
--- a/server/web3service/metadata/Web3.js
+++ /dev/null
@@ -1,8 +0,0 @@
-const utils = require('j7/utils');
-const basewrap = require('./basewrap');
-
-class Web3 extends basewrap.BaseWrap {
-
-}
-
-module.exports = Web3;
diff --git a/server/web3service/metadata/factory.js b/server/web3service/metadata/factory.js
index b63f9f4..e1d32ef 100644
--- a/server/web3service/metadata/factory.js
+++ b/server/web3service/metadata/factory.js
@@ -116,8 +116,8 @@ function init() {
   }
   load();
   {
-    traverseMetaList('MarketDb', (dbConf, idx) => {
-      app.registerDb('MarketDb' + idx, dbConf);
+    traverseMetaList('BlockChainDb', (dbConf, idx) => {
+      app.registerDb('BlockChainDb' + idx, dbConf);
     });
   }
 }
@@ -152,45 +152,8 @@ function traverseMetaList(name, cb) {
   }
 }
 
-function getWeb3Conf() {
-  return getMetaByKey('Web3', '0');
-}
-
-function getContracts() {
-  return getMetaList('Contract');
-}
-
-function getContractByName(name) {
-  return getMetaByKey('Contract', name);
-}
-
-function getContractByAddress(address) {
-  let contract = null;
-  getContracts().forEach((item) => {
-    if (item['address'] == address) {
-      contract = item;
-    }
-  });
-  return contract;
-}
-
-function getUserAddress() {
-  return getWeb3Conf()['user_address'];
-}
-
-function getPrivateKey() {
-  return getWeb3Conf()['private_key'];
-}
-
 exports.init = init;
 
 exports.getMetaByKey = getMetaByKey;
 exports.traverseMetaList = traverseMetaList;
 exports.callMetaStatic = callMetaStatic;
-
-exports.getWeb3Conf = getWeb3Conf;
-exports.getContracts = getContracts;
-exports.getContractByName = getContractByName;
-exports.getContractByAddress = getContractByAddress;
-exports.getUserAddress = getUserAddress;
-exports.getPrivateKey = getPrivateKey;