diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 00000000..7a73a41b
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,2 @@
+{
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index 40b58211..d0a517e6 100755
--- a/README.md
+++ b/README.md
@@ -81,7 +81,7 @@ In order to give users a more humane and more convenient experience, as the entr
 (then have the Chinese New Year, 14 days holiday)
 - [x] Functional & logic implementation  (plan: 2019.02. 27 done)[actual: 02.22 done] 
 - [x] Release Beta version (plan: 2019.02.28 release)[actual: 02.23 done] 
-- [ ] Optimization and development
+- [x] Optimization and development
 - [ ] Integrate Parity Signer to Polkawallet
 - [ ] New and more functions, including finance, cross-chain ecosystem
 
diff --git a/__test__/Api.test.js b/__test__/Api.test.js
index 1158ac50..9e2d6561 100755
--- a/__test__/Api.test.js
+++ b/__test__/Api.test.js
@@ -8,10 +8,6 @@ let _index = _interopRequireDefault(require('@polkadot/rpc-provider/mock/index')
 
 let _ = require('@polkadot/api')
 
-// Copyright 2017-2019 @polkadot/api authors & contributors
-// This software may be modified and distributed under the terms
-// of the Apache-2.0 license. See the LICENSE file for details.
-
 describe.skip('Metadata queries', () => {
   let mock
   beforeEach(() => {
diff --git a/src/components/Active.js b/src/components/Active.js
index 3c02cf70..6e5a9753 100755
--- a/src/components/Active.js
+++ b/src/components/Active.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Text, View, Image, TouchableOpacity, RefreshControl, ScrollView } from 'react-native'
 import { Method } from '@polkadot/types'
diff --git a/src/components/CoinRow.js b/src/components/CoinRow.js
index 9c52e2ae..30e9711c 100755
--- a/src/components/CoinRow.js
+++ b/src/components/CoinRow.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Image, View, TouchableOpacity, Text } from 'react-native'
 import moment from 'moment/moment'
diff --git a/src/components/Header.js b/src/components/Header.js
index 021ccb67..38fce0e6 100755
--- a/src/components/Header.js
+++ b/src/components/Header.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Image, View, TouchableOpacity, Text } from 'react-native'
 import { ScreenWidth } from '../util/Common'
diff --git a/src/components/Loading.js b/src/components/Loading.js
index 646f698a..10e41c56 100755
--- a/src/components/Loading.js
+++ b/src/components/Loading.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React from 'react'
 import { ActivityIndicator, StyleSheet, Text, View, Dimensions } from 'react-native'
 import i18n from '../locales/i18n'
diff --git a/src/components/LoadingUtil.js b/src/components/LoadingUtil.js
index e27ed968..992cbd8f 100755
--- a/src/components/LoadingUtil.js
+++ b/src/components/LoadingUtil.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 const LoadingUtil = {
   showLoading(timeOut = 30000) {
     global.LoadingTip = true
diff --git a/src/components/ProposalsRow.js b/src/components/ProposalsRow.js
index 463c3fb2..76917abb 100755
--- a/src/components/ProposalsRow.js
+++ b/src/components/ProposalsRow.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Text, View, Image } from 'react-native'
 import { ScreenWidth, ScreenHeight } from '../util/Common'
diff --git a/src/components/RNKeyboardAvoidView.js b/src/components/RNKeyboardAvoidView.js
index 69088d20..4b095c7d 100755
--- a/src/components/RNKeyboardAvoidView.js
+++ b/src/components/RNKeyboardAvoidView.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { KeyboardAvoidingView, ScrollView, Platform } from 'react-native'
 
diff --git a/src/components/RNPicker.js b/src/components/RNPicker.js
index ef3cffb9..0dad1746 100755
--- a/src/components/RNPicker.js
+++ b/src/components/RNPicker.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Platform, Picker, Text, ActionSheetIOS, TouchableOpacity, Image } from 'react-native'
 import i18n from '../locales/i18n'
diff --git a/src/components/bottom.js b/src/components/bottom.js
index d3e44368..75afc370 100755
--- a/src/components/bottom.js
+++ b/src/components/bottom.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Image, Dimensions } from 'react-native'
 
diff --git a/src/locales/en-US/Assets/index.js b/src/locales/en-US/Assets/index.js
index 696c3b1e..b5644060 100755
--- a/src/locales/en-US/Assets/index.js
+++ b/src/locales/en-US/Assets/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-21 20:09:00
+ */
 export default {
   Alexander: 'Alexander TestNet',
   Receive: 'Receive',
diff --git a/src/locales/en-US/Democracy/index.js b/src/locales/en-US/Democracy/index.js
index 273db42c..eb06839e 100755
--- a/src/locales/en-US/Democracy/index.js
+++ b/src/locales/en-US/Democracy/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 export default {
   // Democracy.js
   proposals: 'proposals',
diff --git a/src/locales/en-US/Profile/index.js b/src/locales/en-US/Profile/index.js
index e5df3a0b..14894ead 100755
--- a/src/locales/en-US/Profile/index.js
+++ b/src/locales/en-US/Profile/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-22 00:27:44
+ */
 export default {
   Setting: 'Setting',
   ManageAccount: 'Manage Account',
diff --git a/src/locales/en-US/Staking/index.js b/src/locales/en-US/Staking/index.js
index 38c9a09d..a5a6637c 100755
--- a/src/locales/en-US/Staking/index.js
+++ b/src/locales/en-US/Staking/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 export default {
   // Staking.js
   stakingOverview: 'Staking Overview',
diff --git a/src/locales/en-US/index.js b/src/locales/en-US/index.js
index bb932f89..818a08c9 100755
--- a/src/locales/en-US/index.js
+++ b/src/locales/en-US/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import Assets from './Assets/index'
 import Staking from './Staking/index'
 import Democracy from './Democracy/index'
diff --git a/src/locales/i18n.js b/src/locales/i18n.js
index f8486793..b8149f59 100755
--- a/src/locales/i18n.js
+++ b/src/locales/i18n.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import i18n from 'react-native-i18n'
 import en from './en-US/index'
 import zh from './zh-CN/index'
diff --git a/src/locales/zh-CN/Assets/index.js b/src/locales/zh-CN/Assets/index.js
index 4bbc7986..382863ab 100755
--- a/src/locales/zh-CN/Assets/index.js
+++ b/src/locales/zh-CN/Assets/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-21 20:09:00
+ */
 export default {
   Alexander: 'Alexander 测试网',
   Receive: '接收',
diff --git a/src/locales/zh-CN/Democracy/index.js b/src/locales/zh-CN/Democracy/index.js
index 4dd0a845..523478dd 100755
--- a/src/locales/zh-CN/Democracy/index.js
+++ b/src/locales/zh-CN/Democracy/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 export default {
   // Democracy.js
   proposals: '提案',
diff --git a/src/locales/zh-CN/Profile/index.js b/src/locales/zh-CN/Profile/index.js
index f8428d44..30f2d91b 100755
--- a/src/locales/zh-CN/Profile/index.js
+++ b/src/locales/zh-CN/Profile/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-22 00:28:12
+ */
 export default {
   ManageAccount: '账户管理',
   Setting: '设置',
diff --git a/src/locales/zh-CN/Staking/index.js b/src/locales/zh-CN/Staking/index.js
index 1b04e7fd..dccb0b60 100755
--- a/src/locales/zh-CN/Staking/index.js
+++ b/src/locales/zh-CN/Staking/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 export default {
   // Staking.js
   stakingOverview: '抵押概况',
diff --git a/src/locales/zh-CN/index.js b/src/locales/zh-CN/index.js
index f45db9ab..08ba7b6e 100755
--- a/src/locales/zh-CN/index.js
+++ b/src/locales/zh-CN/index.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import Assets from './Assets/index'
 import Staking from './Staking/index'
 import Democracy from './Democracy/index'
diff --git a/src/mobx/mobx.js b/src/mobx/mobx.js
index 2d57e03d..64fd50ce 100755
--- a/src/mobx/mobx.js
+++ b/src/mobx/mobx.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-21 22:42:42
+ */
 import { observable } from 'mobx'
 
 class StateStore {
diff --git a/src/page/Assets/Assets.js b/src/page/Assets/Assets.js
index a790e296..63eeab62 100755
--- a/src/page/Assets/Assets.js
+++ b/src/page/Assets/Assets.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-21 21:14:28
+ */
 import React, { Component } from 'react'
 import {
   Text,
diff --git a/src/page/Assets/secondary/BackupAccount.js b/src/page/Assets/secondary/BackupAccount.js
index 3e81a070..e1c5f53e 100755
--- a/src/page/Assets/secondary/BackupAccount.js
+++ b/src/page/Assets/secondary/BackupAccount.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Assets/secondary/Camera.js b/src/page/Assets/secondary/Camera.js
index 65e44bce..f6739299 100755
--- a/src/page/Assets/secondary/Camera.js
+++ b/src/page/Assets/secondary/Camera.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-20 21:01:02
+ */
 import React, { Component } from 'react'
 import { StyleSheet, Text, View, TouchableOpacity, StatusBar, SafeAreaView, Platform } from 'react-native'
 import { QRscanner } from 'react-native-qr-scanner'
diff --git a/src/page/Assets/secondary/CoinDetails.js b/src/page/Assets/secondary/CoinDetails.js
index a3b4bd2b..27330ded 100755
--- a/src/page/Assets/secondary/CoinDetails.js
+++ b/src/page/Assets/secondary/CoinDetails.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Assets/secondary/CreateAccount.js b/src/page/Assets/secondary/CreateAccount.js
index 8d4df596..c599553a 100755
--- a/src/page/Assets/secondary/CreateAccount.js
+++ b/src/page/Assets/secondary/CreateAccount.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-21 21:33:46
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Assets/secondary/MnemonicWord_1.js b/src/page/Assets/secondary/MnemonicWord_1.js
index 2429158d..eb58f8c3 100755
--- a/src/page/Assets/secondary/MnemonicWord_1.js
+++ b/src/page/Assets/secondary/MnemonicWord_1.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { StyleSheet, Text, View, Image, TouchableOpacity, StatusBar, SafeAreaView, Modal } from 'react-native'
 import { observer, inject } from 'mobx-react'
diff --git a/src/page/Assets/secondary/MnemonicWord_2.js b/src/page/Assets/secondary/MnemonicWord_2.js
index 1d85efaf..7abc380c 100755
--- a/src/page/Assets/secondary/MnemonicWord_2.js
+++ b/src/page/Assets/secondary/MnemonicWord_2.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { StyleSheet, Text, View, Image, TouchableOpacity, SafeAreaView, StatusBar } from 'react-native'
 import { observer, inject } from 'mobx-react'
diff --git a/src/page/Assets/secondary/MnemonicWord_3.js b/src/page/Assets/secondary/MnemonicWord_3.js
index e21c8ffe..1182c996 100755
--- a/src/page/Assets/secondary/MnemonicWord_3.js
+++ b/src/page/Assets/secondary/MnemonicWord_3.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { StyleSheet, Text, View, TouchableOpacity, StatusBar, SafeAreaView, Alert } from 'react-native'
 import { NavigationActions, StackActions } from 'react-navigation'
diff --git a/src/page/Assets/secondary/QRCode.js b/src/page/Assets/secondary/QRCode.js
index bed32318..7d2d88a3 100755
--- a/src/page/Assets/secondary/QRCode.js
+++ b/src/page/Assets/secondary/QRCode.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-20 21:01:02
+ */
 import React, { Component } from 'react'
 import { View, Text, TouchableOpacity, Image, Clipboard, StatusBar, Platform, SafeAreaView, Alert } from 'react-native'
 import QRCode from 'react-native-qrcode'
diff --git a/src/page/Assets/secondary/RightMenu.js b/src/page/Assets/secondary/RightMenu.js
index 6f80c094..e15fe16d 100755
--- a/src/page/Assets/secondary/RightMenu.js
+++ b/src/page/Assets/secondary/RightMenu.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { StyleSheet, Text, View, ScrollView, Image, TouchableOpacity, SafeAreaView } from 'react-native'
 import { observer, inject } from 'mobx-react'
diff --git a/src/page/Assets/secondary/Transfer/MakeTransfer.js b/src/page/Assets/secondary/Transfer/MakeTransfer.js
index 6e1bc5ed..b35fbdeb 100755
--- a/src/page/Assets/secondary/Transfer/MakeTransfer.js
+++ b/src/page/Assets/secondary/Transfer/MakeTransfer.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-19 23:03:08
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Assets/secondary/Transfer/Transfer.js b/src/page/Assets/secondary/Transfer/Transfer.js
index 8c41417a..b67d84e3 100755
--- a/src/page/Assets/secondary/Transfer/Transfer.js
+++ b/src/page/Assets/secondary/Transfer/Transfer.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-20 20:42:10
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Assets/secondary/Transfer/TransferDetails.js b/src/page/Assets/secondary/Transfer/TransferDetails.js
index b2712ac8..fa78ccf7 100755
--- a/src/page/Assets/secondary/Transfer/TransferDetails.js
+++ b/src/page/Assets/secondary/Transfer/TransferDetails.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-22 09:42:30
+ */
 import React, { PureComponent } from 'react'
 import {
   View,
diff --git a/src/page/Democracy/Democracy.js b/src/page/Democracy/Democracy.js
index 86c561e5..9f9b5a38 100755
--- a/src/page/Democracy/Democracy.js
+++ b/src/page/Democracy/Democracy.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-19 21:24:18
+ */
 import React, { Component } from 'react'
 import { Text, View, TouchableOpacity, ScrollView, SafeAreaView, StatusBar, Platform } from 'react-native'
 import { observer, inject } from 'mobx-react'
diff --git a/src/page/Democracy/Proposals.js b/src/page/Democracy/Proposals.js
index 61a4555a..d76facee 100755
--- a/src/page/Democracy/Proposals.js
+++ b/src/page/Democracy/Proposals.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Text, View } from 'react-native'
 import { Method } from '@polkadot/types'
diff --git a/src/page/Democracy/Referendums.js b/src/page/Democracy/Referendums.js
index 9516cdf7..6ee4108a 100755
--- a/src/page/Democracy/Referendums.js
+++ b/src/page/Democracy/Referendums.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Text, View, TouchableOpacity } from 'react-native'
 import { observer, inject } from 'mobx-react'
diff --git a/src/page/Democracy/secondary/History.js b/src/page/Democracy/secondary/History.js
index cac57c7c..2319f3cf 100755
--- a/src/page/Democracy/secondary/History.js
+++ b/src/page/Democracy/secondary/History.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Text, View, Image, TouchableOpacity } from 'react-native'
 import { VictoryPie } from 'victory-native'
diff --git a/src/page/Democracy/secondary/NayorAye.js b/src/page/Democracy/secondary/NayorAye.js
index 5822838d..2bb5c580 100755
--- a/src/page/Democracy/secondary/NayorAye.js
+++ b/src/page/Democracy/secondary/NayorAye.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Profile/Profile.js b/src/page/Profile/Profile.js
index f7e02ae9..17ca0cbf 100755
--- a/src/page/Profile/Profile.js
+++ b/src/page/Profile/Profile.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-19 21:24:18
+ */
 import React, { Component } from 'react'
 import { Text, View, ScrollView, Image, TouchableOpacity, SafeAreaView, Platform, StatusBar } from 'react-native'
 
diff --git a/src/page/Profile/secondary/About.js b/src/page/Profile/secondary/About.js
index bbd6f571..15d74df7 100755
--- a/src/page/Profile/secondary/About.js
+++ b/src/page/Profile/secondary/About.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { StyleSheet, Text, View, Image, SafeAreaView, StatusBar } from 'react-native'
 import { observer, inject } from 'mobx-react'
diff --git a/src/page/Profile/secondary/AddAddress.js b/src/page/Profile/secondary/AddAddress.js
index 0e488ef4..9b5cee7f 100755
--- a/src/page/Profile/secondary/AddAddress.js
+++ b/src/page/Profile/secondary/AddAddress.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Profile/secondary/AddressInformation.js b/src/page/Profile/secondary/AddressInformation.js
index 1bb7798c..8884c28e 100755
--- a/src/page/Profile/secondary/AddressInformation.js
+++ b/src/page/Profile/secondary/AddressInformation.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Profile/secondary/Addresses.js b/src/page/Profile/secondary/Addresses.js
index 325da79d..0ad08033 100755
--- a/src/page/Profile/secondary/Addresses.js
+++ b/src/page/Profile/secondary/Addresses.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Profile/secondary/Change/ChangeName.js b/src/page/Profile/secondary/Change/ChangeName.js
index e1d091ad..3ae10bc8 100755
--- a/src/page/Profile/secondary/Change/ChangeName.js
+++ b/src/page/Profile/secondary/Change/ChangeName.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Profile/secondary/Change/ChangePassword.js b/src/page/Profile/secondary/Change/ChangePassword.js
index c0c72f25..51a0694c 100755
--- a/src/page/Profile/secondary/Change/ChangePassword.js
+++ b/src/page/Profile/secondary/Change/ChangePassword.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Profile/secondary/ManageAccount.js b/src/page/Profile/secondary/ManageAccount.js
index 983542fa..ee94a2f0 100755
--- a/src/page/Profile/secondary/ManageAccount.js
+++ b/src/page/Profile/secondary/ManageAccount.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Profile/secondary/Settings.js b/src/page/Profile/secondary/Settings.js
index ba581651..4206a615 100755
--- a/src/page/Profile/secondary/Settings.js
+++ b/src/page/Profile/secondary/Settings.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-21 22:01:34
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Profile/secondary/Settings/Gesture.js b/src/page/Profile/secondary/Settings/Gesture.js
index 26ba6f26..2fa25c47 100755
--- a/src/page/Profile/secondary/Settings/Gesture.js
+++ b/src/page/Profile/secondary/Settings/Gesture.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { AsyncStorage, SafeAreaView, StatusBar, View } from 'react-native'
 import { NavigationActions, StackActions } from 'react-navigation'
diff --git a/src/page/Profile/secondary/Settings/SetNode.js b/src/page/Profile/secondary/Settings/SetNode.js
index 6832b5b8..7767e2bc 100755
--- a/src/page/Profile/secondary/Settings/SetNode.js
+++ b/src/page/Profile/secondary/Settings/SetNode.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-22 00:21:58
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/Staking.js b/src/page/Staking/Staking.js
index 31c0bbb3..6a61c3ba 100755
--- a/src/page/Staking/Staking.js
+++ b/src/page/Staking/Staking.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-19 21:24:18
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/BondAdditional.js b/src/page/Staking/secondary/BondAdditional.js
index 0f0cbb33..9c28e4a1 100755
--- a/src/page/Staking/secondary/BondAdditional.js
+++ b/src/page/Staking/secondary/BondAdditional.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-19 23:03:08
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/BondFunds.js b/src/page/Staking/secondary/BondFunds.js
index 0c73d457..37808bf7 100755
--- a/src/page/Staking/secondary/BondFunds.js
+++ b/src/page/Staking/secondary/BondFunds.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 22:22:06
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/Nominate.js b/src/page/Staking/secondary/Nominate.js
index 224fffb7..966aae5f 100755
--- a/src/page/Staking/secondary/Nominate.js
+++ b/src/page/Staking/secondary/Nominate.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 22:22:06
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/SetSessionKey.js b/src/page/Staking/secondary/SetSessionKey.js
index 4fb03d5c..ca463972 100755
--- a/src/page/Staking/secondary/SetSessionKey.js
+++ b/src/page/Staking/secondary/SetSessionKey.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 22:22:06
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/Stake.js b/src/page/Staking/secondary/Stake.js
index 7e89a46a..ec235835 100755
--- a/src/page/Staking/secondary/Stake.js
+++ b/src/page/Staking/secondary/Stake.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 22:22:06
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/Unbond.js b/src/page/Staking/secondary/Unbond.js
index c7e3059b..d50ab002 100755
--- a/src/page/Staking/secondary/Unbond.js
+++ b/src/page/Staking/secondary/Unbond.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 22:22:06
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/Unnominate.js b/src/page/Staking/secondary/Unnominate.js
index fed75fba..a8072b58 100755
--- a/src/page/Staking/secondary/Unnominate.js
+++ b/src/page/Staking/secondary/Unnominate.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 22:22:06
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/Unstake.js b/src/page/Staking/secondary/Unstake.js
index 1d9e11b8..8512b89c 100755
--- a/src/page/Staking/secondary/Unstake.js
+++ b/src/page/Staking/secondary/Unstake.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 22:22:06
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/Staking/secondary/ValidatorInfo.js b/src/page/Staking/secondary/ValidatorInfo.js
index baff1d84..987f5e14 100755
--- a/src/page/Staking/secondary/ValidatorInfo.js
+++ b/src/page/Staking/secondary/ValidatorInfo.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import {
   StyleSheet,
diff --git a/src/page/TabbedNavigation.js b/src/page/TabbedNavigation.js
index 0cc72ae8..d8841325 100755
--- a/src/page/TabbedNavigation.js
+++ b/src/page/TabbedNavigation.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import React, { Component } from 'react'
 import { Text } from 'react-native'
 import { createBottomTabNavigator } from 'react-navigation'
diff --git a/src/util/Common.js b/src/util/Common.js
index 8b21ea69..c0c9d62c 100755
--- a/src/util/Common.js
+++ b/src/util/Common.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-20 21:01:02
+ */
 import SInfo from 'react-native-sensitive-info'
 import Keyring from '@polkadot/keyring'
 import { Dimensions, Alert } from 'react-native'
diff --git a/src/util/DataRepository.js b/src/util/DataRepository.js
index e6fe7842..db7574ca 100755
--- a/src/util/DataRepository.js
+++ b/src/util/DataRepository.js
@@ -1,7 +1,19 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 import { AsyncStorage } from 'react-native'
 
 /**
- * 数据持久化类
+ * 数据持久化类 | Data persistence class
  */
 export default class DataRepository {
   /**
@@ -40,7 +52,7 @@ export default class DataRepository {
   }
 
   /**
-   * 移除本地存存的key
+   * 移除本地存的key
    * @param key
    * @returns {*}
    */
@@ -51,7 +63,7 @@ export default class DataRepository {
   }
 
   /**
-   * 移除本地存存的keys
+   * 移除本地存的keys
    * @param keys
    * @returns {*}
    */
diff --git a/src/util/error_guard.js b/src/util/error_guard.js
index af406331..c93ec988 100755
--- a/src/util/error_guard.js
+++ b/src/util/error_guard.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-18 21:08:00
+ */
 const noop = () => {}
 
 export const setJSExceptionHandler = (customHandler = noop, allowedInDevMode = false) => {
diff --git a/src/util/polkadotAPI.js b/src/util/polkadotAPI.js
index 8f827246..37313fd7 100755
--- a/src/util/polkadotAPI.js
+++ b/src/util/polkadotAPI.js
@@ -1,3 +1,15 @@
+/*
+ * @Description: COPYRIGHT © 2018 POLKAWALLET (HK) LIMITED 
+ *  This file is part of Polkawallet. 
+ 
+ It under the terms of the GNU General Public License as published by 
+ the Free Software Foundation, either version 3 of the License. 
+ You should have received a copy of the GNU General Public License 
+ along with Polkawallet. If not, see <http://www.gnu.org/licenses/>. 
+
+ * @Autor: POLKAWALLET LIMITED
+ * @Date: 2019-06-20 20:42:10
+ */
 import Api from '@polkadot/api/promise'
 import WsProvider from '@polkadot/rpc-provider/ws'
 import AppState from '../mobx/mobx'