diff --git a/bin/syncBlockchain.babel.js b/bin/syncBlockchain.babel.js
deleted file mode 100644
index 99dab88..0000000
--- a/bin/syncBlockchain.babel.js
+++ /dev/null
@@ -1,158 +0,0 @@
-var http = require('http');
-var models = require('../models');
-var rpcConfig = require('../config/config')['rpc'];
-
-const {username, password, hostname, port} = rpcConfig;
-
-function MakeRPCRequest(postData) {
-  return new Promise(function(resolve, reject) {
-    var post_options = {
-      host: hostname,
-      port: port,
-      auth: `${username}:${password}`,
-      path: '/',
-      method: 'POST',
-      headers: {
-          'Content-Type': 'application/x-www-form-urlencoded',
-          'Content-Length': Buffer.byteLength(postData)
-      }
-    };
-    var post_req = http.request(post_options, function(res) {
-      res.setEncoding("utf8");
-      let body = "";
-      res.on("data", data => {
-        body += data;
-      });
-      res.on("end", () => {
-        resolve(body);
-      });
-    });
-    post_req.write(postData);
-    post_req.end();
-  });
-}
-
-async function saveTransaction(txid, blockHeight) {
-  const res_tx = await MakeRPCRequest(JSON.stringify({
-    method: 'getrawtransaction',
-    params: [txid, 1],
-    id: 1
-  }));
-  const tx = JSON.parse(res_tx)['result'];
-  // console.log('tx:', tx);
-  if (tx === null) {
-    await models.Failure.create({
-      msg: `${txid} fetching failed`,
-    });
-    return;
-  }
-  const transaction = await models.Transaction.create({
-    txid: tx.txid,
-    BlockHeight: blockHeight,
-  });
-  for (var i = 0; i < tx.vout.length; i++) {
-    const vout = tx.vout[i];
-    const m_vout = await models.Vout.create({
-      value: vout.value,
-    });
-    for (var y = 0; y < vout.scriptPubKey.addresses.length; y++) {
-      const address = vout.scriptPubKey.addresses[y];
-      let m_address = await models.Address.findOne({
-        where: {
-          address,
-        },
-      });
-      if (m_address === null) {
-        m_address = await models.Address.create({
-          address,
-        });
-      }
-      await m_vout.addAddresses(m_address);
-    }
-    await transaction.addVouts(m_vout);
-  }
-  for (var i = 0; i < tx.vin.length; i++) {
-    const vin = tx.vin[i];
-    if (vin.txid) {
-      const trans = await models.Transaction.findOne({
-        where: {
-          txid: vin.txid,
-        },
-      });
-      if (trans) {
-        await transaction.addTxtx(trans);
-      }
-    }
-  }
-}
-
-async function syncNextBlock(syncedHeight) {
-  const height = syncedHeight + 1;
-  const res_hash = await MakeRPCRequest(JSON.stringify({
-    method: 'getblockhash',
-    params: [height],
-    id: 1
-  }));
-  const blockHash = JSON.parse(res_hash)['result'];
-  const res_block = await MakeRPCRequest(JSON.stringify({
-    method: 'getblock',
-    params: [blockHash],
-    id: 1
-  }));
-  const block = JSON.parse(res_block)['result'];
-  block.time = new Date(block.time * 1000);
-  await models.Block.create(block);
-  for (var i = 0; i < block.tx.length; i++) {
-    await saveTransaction(block.tx[i], block.height);
-  }
-  if (block.height > 1) {
-    await models.Block.update({
-      nextblockhash: block.hash
-    },{
-      where: {
-        hash: block.previousblockhash
-      }
-    });
-  }
-  return height;
-}
-
-async function getCurrentHeight() {
-  const result = await MakeRPCRequest(JSON.stringify({
-    method: 'getblockcount',
-    params: [],
-    id: 1
-  }));
-
-  return JSON.parse(result)['result'];
-}
-
-async function getSyncedHeight() {
-  const result = await models.Block.findOne({
-    attributes: ['height'],
-    order: [['height', 'DESC']],
-    limit: 1
-  });
-  const height = result ? result.height : -1;
-  return height;
-}
-
-async function syncBlockchain() {
-  let syncedHeight = await getSyncedHeight();
-  console.log('\x1b[36m%s\x1b[0m', 'syncedHeight is', syncedHeight);
-
-  let currentHeight = await getCurrentHeight();
-  console.log('\x1b[36m%s\x1b[0m', 'currentHeight is', currentHeight);
-  try {
-    while (syncedHeight < currentHeight) {
-      syncedHeight = await syncNextBlock(syncedHeight);
-      console.log('\x1b[36m%s\x1b[0m', 'syncedHeight: ', syncedHeight)
-    }
-  } catch (e) {
-    console.log('=====', e);
-    process.exit(0);
-  }
-  process.exit(0);
-}
-
-syncBlockchain();
diff --git a/bin/syncBlockchain.js b/bin/syncBlockchain.js
index 09fc16e..99dab88 100644
--- a/bin/syncBlockchain.js
+++ b/bin/syncBlockchain.js
@@ -1,2 +1,158 @@
-require('babel-register');
-require('./syncBlockchain.babel.js');
+var http = require('http');
+var models = require('../models');
+var rpcConfig = require('../config/config')['rpc'];
+
+const {username, password, hostname, port} = rpcConfig;
+
+function MakeRPCRequest(postData) {
+  return new Promise(function(resolve, reject) {
+    var post_options = {
+      host: hostname,
+      port: port,
+      auth: `${username}:${password}`,
+      path: '/',
+      method: 'POST',
+      headers: {
+          'Content-Type': 'application/x-www-form-urlencoded',
+          'Content-Length': Buffer.byteLength(postData)
+      }
+    };
+    var post_req = http.request(post_options, function(res) {
+      res.setEncoding("utf8");
+      let body = "";
+      res.on("data", data => {
+        body += data;
+      });
+      res.on("end", () => {
+        resolve(body);
+      });
+    });
+    post_req.write(postData);
+    post_req.end();
+  });
+}
+
+async function saveTransaction(txid, blockHeight) {
+  const res_tx = await MakeRPCRequest(JSON.stringify({
+    method: 'getrawtransaction',
+    params: [txid, 1],
+    id: 1
+  }));
+  const tx = JSON.parse(res_tx)['result'];
+  // console.log('tx:', tx);
+  if (tx === null) {
+    await models.Failure.create({
+      msg: `${txid} fetching failed`,
+    });
+    return;
+  }
+  const transaction = await models.Transaction.create({
+    txid: tx.txid,
+    BlockHeight: blockHeight,
+  });
+  for (var i = 0; i < tx.vout.length; i++) {
+    const vout = tx.vout[i];
+    const m_vout = await models.Vout.create({
+      value: vout.value,
+    });
+    for (var y = 0; y < vout.scriptPubKey.addresses.length; y++) {
+      const address = vout.scriptPubKey.addresses[y];
+      let m_address = await models.Address.findOne({
+        where: {
+          address,
+        },
+      });
+      if (m_address === null) {
+        m_address = await models.Address.create({
+          address,
+        });
+      }
+      await m_vout.addAddresses(m_address);
+    }
+    await transaction.addVouts(m_vout);
+  }
+  for (var i = 0; i < tx.vin.length; i++) {
+    const vin = tx.vin[i];
+    if (vin.txid) {
+      const trans = await models.Transaction.findOne({
+        where: {
+          txid: vin.txid,
+        },
+      });
+      if (trans) {
+        await transaction.addTxtx(trans);
+      }
+    }
+  }
+}
+
+async function syncNextBlock(syncedHeight) {
+  const height = syncedHeight + 1;
+  const res_hash = await MakeRPCRequest(JSON.stringify({
+    method: 'getblockhash',
+    params: [height],
+    id: 1
+  }));
+  const blockHash = JSON.parse(res_hash)['result'];
+  const res_block = await MakeRPCRequest(JSON.stringify({
+    method: 'getblock',
+    params: [blockHash],
+    id: 1
+  }));
+  const block = JSON.parse(res_block)['result'];
+  block.time = new Date(block.time * 1000);
+  await models.Block.create(block);
+  for (var i = 0; i < block.tx.length; i++) {
+    await saveTransaction(block.tx[i], block.height);
+  }
+  if (block.height > 1) {
+    await models.Block.update({
+      nextblockhash: block.hash
+    },{
+      where: {
+        hash: block.previousblockhash
+      }
+    });
+  }
+  return height;
+}
+
+async function getCurrentHeight() {
+  const result = await MakeRPCRequest(JSON.stringify({
+    method: 'getblockcount',
+    params: [],
+    id: 1
+  }));
+
+  return JSON.parse(result)['result'];
+}
+
+async function getSyncedHeight() {
+  const result = await models.Block.findOne({
+    attributes: ['height'],
+    order: [['height', 'DESC']],
+    limit: 1
+  });
+  const height = result ? result.height : -1;
+  return height;
+}
+
+async function syncBlockchain() {
+  let syncedHeight = await getSyncedHeight();
+  console.log('\x1b[36m%s\x1b[0m', 'syncedHeight is', syncedHeight);
+
+  let currentHeight = await getCurrentHeight();
+  console.log('\x1b[36m%s\x1b[0m', 'currentHeight is', currentHeight);
+  try {
+    while (syncedHeight < currentHeight) {
+      syncedHeight = await syncNextBlock(syncedHeight);
+      console.log('\x1b[36m%s\x1b[0m', 'syncedHeight: ', syncedHeight)
+    }
+  } catch (e) {
+    console.log('=====', e);
+    process.exit(0);
+  }
+  process.exit(0);
+}
+
+syncBlockchain();
diff --git a/package.json b/package.json
index b69af41..64c6b5e 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,8 @@
   "scripts": {
     "start": "node ./bin/www",
     "initdb": "node ./bin/initdb.js",
-    "syncBlockchain": "node ./bin/syncBlockchain.js"
+    "syncBlockchain": "node ./bin/syncBlockchain.js",
+    "addN": "node ./bin/addNToVouts.js"
   },
   "repository": {
     "type": "git",
@@ -16,7 +17,6 @@
     "node": ">=7.10.1"
   },
   "dependencies": {
-    "babel-register": "^6.26.0",
     "body-parser": "~1.18.2",
     "cookie-parser": "~1.4.3",
     "debug": "~2.6.9",