diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/main/AssetFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/main/AssetFragment.java
index 2c8e6bc..de7ac55 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/main/AssetFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/main/AssetFragment.java
@@ -60,6 +60,7 @@ import java.util.stream.IntStream;
 import static androidx.fragment.app.FragmentPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT;
 import static com.cobo.cold.ui.fragment.Constants.KEY_COIN_ID;
 import static com.cobo.cold.viewmodel.GlobalViewModel.getAddressType;
+import static com.cobo.cold.viewmodel.WatchWallet.getWatchWallet;
 
 public class AssetFragment extends BaseFragment<AssetFragmentBinding>
         implements NumberPickerCallback {
@@ -78,7 +79,7 @@ public class AssetFragment extends BaseFragment<AssetFragmentBinding>
     @Override
     protected void init(View view) {
         coinId = Coins.BTC.coinId();
-        watchWallet = WatchWallet.getWatchWallet(mActivity);
+        watchWallet = getWatchWallet(mActivity);
         mActivity.setSupportActionBar(mBinding.toolbar);
         mBinding.toolbar.setNavigationOnClickListener(((MainActivity) mActivity)::toggleDrawer);
         String walletName = watchWallet.getWalletName(mActivity);
@@ -195,6 +196,7 @@ public class AssetFragment extends BaseFragment<AssetFragmentBinding>
                 navigate(R.id.action_to_txnListFragment);
                 break;
             case WASABI:
+            case BTCPAY:
             case GENERIC:
                 navigate(R.id.action_to_psbtListFragment);
                 break;
@@ -226,6 +228,7 @@ public class AssetFragment extends BaseFragment<AssetFragmentBinding>
                 case COBO:
                     navigate(R.id.export_xpub_cobo);
                     break;
+                case BTCPAY:
                 case WASABI:
                     navigate(R.id.action_to_export_xpub_guide);
                     break;
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/main/FeeAttackChecking.java b/app/src/main/java/com/cobo/cold/ui/fragment/main/FeeAttackChecking.java
index f87690b..379ec0c 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/main/FeeAttackChecking.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/main/FeeAttackChecking.java
@@ -1,24 +1,15 @@
 package com.cobo.cold.ui.fragment.main;
 
-import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 
 import androidx.databinding.DataBindingUtil;
-import androidx.navigation.Navigation;
 
 import com.cobo.cold.R;
 import com.cobo.cold.databinding.CommonModalBinding;
-import com.cobo.cold.db.entity.TxEntity;
 import com.cobo.cold.ui.fragment.BaseFragment;
 import com.cobo.cold.ui.modal.ModalDialog;
 
-import java.util.Objects;
-
-import static com.cobo.cold.ui.fragment.main.TxFragment.KEY_TX_ID;
-import static com.cobo.cold.viewmodel.ElectrumViewModel.ELECTRUM_SIGN_ID;
-import static com.cobo.cold.viewmodel.PsbtViewModel.WASABI_SIGN_ID;
-
 public class FeeAttackChecking {
 
     public static final String KEY_DUPLICATE_TX = "key_duplicate_tx";
@@ -47,37 +38,4 @@ public class FeeAttackChecking {
         binding.confirm.setOnClickListener(v -> modalDialog.dismiss());
         modalDialog.show(fragment.getHostActivity().getSupportFragmentManager(),"");
     }
-
-    private void navigateToSignedTx(String txId, String signId) {
-        Bundle bundle = new Bundle();
-        bundle.putString(KEY_TX_ID, txId);
-        bundle.putBoolean(KEY_DUPLICATE_TX,true);
-        if (ELECTRUM_SIGN_ID.equals(signId)) {
-            Navigation.findNavController(Objects.requireNonNull(fragment.getView()))
-                    .navigate(R.id.action_to_electrumTxFragment, bundle);
-        } else if(WASABI_SIGN_ID.equals(signId)){
-            Navigation.findNavController(Objects.requireNonNull(fragment.getView()))
-                    .navigate(R.id.action_to_psbtSignedTxFragment, bundle);
-        } else {
-            Navigation.findNavController(Objects.requireNonNull(fragment.getView()))
-                    .navigate(R.id.action_to_txFragment, bundle);
-        }
-    }
-
-    public void showDuplicateTx(TxEntity tx) {
-        ModalDialog modalDialog = ModalDialog.newInstance();
-        CommonModalBinding binding = DataBindingUtil.inflate(
-                LayoutInflater.from(fragment.getHostActivity()), R.layout.common_modal,
-                null, false);
-        modalDialog.setBinding(binding);
-        binding.title.setText(R.string.broadcast_tx);
-        binding.close.setVisibility(View.GONE);
-        binding.subTitle.setText(R.string.already_signed);
-        binding.confirm.setText(R.string.broadcast_tx);
-        binding.confirm.setOnClickListener(v -> {
-            modalDialog.dismiss();
-            navigateToSignedTx(tx.getTxId(), tx.getSignId());
-        });
-        modalDialog.show(fragment.getHostActivity().getSupportFragmentManager(),"");
-    }
 }
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/main/PsbtSignedTxFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/main/PsbtSignedTxFragment.java
index 550ccd0..9ae0246 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/main/PsbtSignedTxFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/main/PsbtSignedTxFragment.java
@@ -39,9 +39,10 @@ import static com.cobo.cold.ui.fragment.main.PsbtTxConfirmFragment.showExportPsb
 public class PsbtSignedTxFragment extends SignedTxFragment {
     @Override
     protected void displaySignResult(TxEntity txEntity) {
-        if (watchWallet == WatchWallet.WASABI) {
+        if (watchWallet == WatchWallet.WASABI || watchWallet == WatchWallet.BTCPAY) {
             mBinding.txDetail.qr.setVisibility(View.GONE);
-            mBinding.txDetail.broadcastGuide.setVisibility(View.GONE);
+            mBinding.txDetail.broadcastGuide.setGravity(Gravity.START);
+            mBinding.txDetail.broadcastGuide.setText(getBroadcastGuideText());
         } else if (watchWallet == WatchWallet.BLUE || watchWallet == WatchWallet.GENERIC) {
             if (watchWallet == WatchWallet.BLUE) {
                 mBinding.txDetail.info.setOnClickListener(v -> showBlueWalletInfo());
@@ -75,6 +76,15 @@ public class PsbtSignedTxFragment extends SignedTxFragment {
         }
     }
 
+    private int getBroadcastGuideText() {
+        if (watchWallet == WatchWallet.WASABI) {
+            return R.string.wasabi_broadcast_guide;
+        } else if (watchWallet == WatchWallet.BTCPAY) {
+            return R.string.btcpay_broadcast_guide;
+        }
+        return 0;
+    }
+
     private void showBlueWalletInfo() {
         ModalDialog modalDialog = ModalDialog.newInstance();
         CommonModalBinding binding = DataBindingUtil.inflate(
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/main/QRCodeScanFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/main/QRCodeScanFragment.java
index 51433bd..4fc8f70 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/main/QRCodeScanFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/main/QRCodeScanFragment.java
@@ -104,7 +104,7 @@ public class QRCodeScanFragment extends BaseFragment<QrcodeScanFragmentBinding>
         }
     }
 
-    public String getScanhint() {
+    private String getScanhint() {
         switch (watchWallet){
             case ELECTRUM:
                 return getString(R.string.scan_electrum_hint);
@@ -112,6 +112,8 @@ public class QRCodeScanFragment extends BaseFragment<QrcodeScanFragmentBinding>
                 return getString(R.string.scan_blue_hint);
             case WASABI:
                 return getString(R.string.scan_wasabi_hint);
+            case BTCPAY:
+                return getString(R.string.btcpay_scan_hint);
 
         }
         return "";
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/main/TxConfirmFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/main/TxConfirmFragment.java
index c9d2b5c..2ac8b4b 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/main/TxConfirmFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/main/TxConfirmFragment.java
@@ -60,7 +60,7 @@ import static com.cobo.cold.ui.fragment.main.BroadcastTxFragment.KEY_TXID;
 import static com.cobo.cold.ui.fragment.main.FeeAttackChecking.FeeAttackCheckingResult.NORMAL;
 import static com.cobo.cold.ui.fragment.main.FeeAttackChecking.FeeAttackCheckingResult.SAME_OUTPUTS;
 
-public class TxConfirmFragment<T> extends BaseFragment<TxConfirmFragmentBinding> {
+public class TxConfirmFragment extends BaseFragment<TxConfirmFragmentBinding> {
 
     public static final String KEY_TX_DATA = "tx_data";
     private final Runnable forgetPassword = () -> {
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/main/TxListFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/main/TxListFragment.java
index 167a7c1..0d105d3 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/main/TxListFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/main/TxListFragment.java
@@ -41,10 +41,8 @@ import java.util.stream.Collectors;
 
 import static com.cobo.cold.ui.fragment.Constants.KEY_COIN_ID;
 import static com.cobo.cold.ui.fragment.main.TxFragment.KEY_TX_ID;
-import static com.cobo.cold.viewmodel.ElectrumViewModel.ELECTRUM_SIGN_ID;
-import static com.cobo.cold.viewmodel.PsbtViewModel.BLUE_WALLET_SIGN_ID;
-import static com.cobo.cold.viewmodel.PsbtViewModel.GENERIC_WALLET_SIGN_ID;
-import static com.cobo.cold.viewmodel.PsbtViewModel.WASABI_SIGN_ID;
+import static com.cobo.cold.viewmodel.WatchWallet.ELECTRUM_SIGN_ID;
+import static com.cobo.cold.viewmodel.WatchWallet.getWatchWallet;
 
 public class TxListFragment extends BaseFragment<TxListBinding> {
 
@@ -69,9 +67,7 @@ public class TxListFragment extends BaseFragment<TxListBinding> {
         txCallback = tx -> {
             Bundle bundle = new Bundle();
             bundle.putString(KEY_TX_ID, tx.getTxId());
-            if (WASABI_SIGN_ID.equals(tx.getSignId())
-                    || BLUE_WALLET_SIGN_ID.equals(tx.getSignId())
-                    || GENERIC_WALLET_SIGN_ID.equals(tx.getSignId())) {
+            if (getWatchWallet(mActivity).supportPsbt()) {
                 navigate(R.id.action_to_psbtSignedTxFragment, bundle);
             } else if(ELECTRUM_SIGN_ID.equals(tx.getSignId())){
                 navigate(R.id.action_to_electrumTxFragment, bundle);
@@ -132,20 +128,12 @@ public class TxListFragment extends BaseFragment<TxListBinding> {
     }
 
     private boolean filterByMode(TxEntity txEntity) {
-        WatchWallet watchWallet = WatchWallet.getWatchWallet(mActivity);
-        switch (watchWallet) {
-            case COBO:
-                return !txEntity.getSignId().endsWith("_sign_id");
-            case ELECTRUM:
-                return ELECTRUM_SIGN_ID.equals(txEntity.getSignId());
-            case WASABI:
-                return WASABI_SIGN_ID.equals(txEntity.getSignId());
-            case BLUE:
-                return BLUE_WALLET_SIGN_ID.equals(txEntity.getSignId());
-            case GENERIC:
-                return GENERIC_WALLET_SIGN_ID.equals(txEntity.getSignId());
+        WatchWallet watchWallet = getWatchWallet(mActivity);
+        if (watchWallet == WatchWallet.COBO) {
+            return !txEntity.getSignId().endsWith("_sign_id");
+        } else {
+            return watchWallet.getSignId().equals(txEntity.getSignId());
         }
-        return false;
     }
 
     private boolean shouldShow(TxEntity tx) {
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/main/WalletInfoFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/main/WalletInfoFragment.java
index 1d4db3e..9f438dd 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/main/WalletInfoFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/main/WalletInfoFragment.java
@@ -34,6 +34,7 @@ import com.cobo.cold.viewmodel.WalletInfoViewModel;
 
 import static com.cobo.cold.ui.fragment.Constants.KEY_TITLE;
 import static com.cobo.cold.ui.fragment.setup.SelectAddressFormatFragment.KEY_NEED_CONFIRM;
+import static com.cobo.cold.viewmodel.WatchWallet.getWatchWallet;
 
 public class WalletInfoFragment extends BaseFragment<WalletInfoBinding> {
     private Coins.Account account;
@@ -48,8 +49,8 @@ public class WalletInfoFragment extends BaseFragment<WalletInfoBinding> {
         mBinding.toolbar.setNavigationOnClickListener(v -> navigateUp());
         mBinding.switchAddress.setOnClickListener(v -> switchAddressFormat());
         account = GlobalViewModel.getAccount(mActivity);
-        WatchWallet watchOnly = WatchWallet.getWatchWallet(mActivity);
-        if (watchOnly != WatchWallet.GENERIC) {
+        WatchWallet watchWallet = getWatchWallet(mActivity);
+        if (!watchWallet.supportSwitchAccount()) {
             mBinding.switchAddress.setVisibility(View.GONE);
         }
         mBinding.addressFormat.setText(getAddressFormat());
@@ -67,9 +68,9 @@ public class WalletInfoFragment extends BaseFragment<WalletInfoBinding> {
 
         viewModel.getXpub(account).observe(this, xpub -> {
             if (!TextUtils.isEmpty(xpub)) {
-                if (watchOnly == WatchWallet.BLUE) {
+                if (watchWallet == WatchWallet.BLUE) {
                     xpub = Util.convertXpubToZpub(xpub);
-                } else if(watchOnly == WatchWallet.ELECTRUM) {
+                } else if(watchWallet == WatchWallet.ELECTRUM) {
                     xpub = Util.convertXpubToYpub(xpub);
                 }
                 mBinding.xpub.setText(xpub);
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/main/electrum/ExportXpubGuideFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/main/electrum/ExportXpubGuideFragment.java
index 955677d..92258bf 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/main/electrum/ExportXpubGuideFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/main/electrum/ExportXpubGuideFragment.java
@@ -43,8 +43,9 @@ import static com.cobo.cold.viewmodel.GlobalViewModel.writeToSdcard;
 public class ExportXpubGuideFragment extends BaseFragment<ExportXpubGuideBinding> {
 
     private WatchWallet watchWallet;
-    private JSONObject wasabiXpubJson;
+    private JSONObject xpubJson;
     private static final String WASABI_XPUB_FILENAME = "CoboVault-Wasabi.json";
+    private static final String BTCPAY_XPUB_FILENAME = "CoboVault-BTCPay.json";
     @Override
     protected int setView() {
         return R.layout.export_xpub_guide;
@@ -66,7 +67,7 @@ public class ExportXpubGuideFragment extends BaseFragment<ExportXpubGuideBinding
         mBinding.text1.setText(getText1());
         mBinding.text2.setText(getText2());
         mBinding.export.setText(getButtonText());
-        wasabiXpubJson = GlobalViewModel.getXpubInfo(mActivity);
+        xpubJson = GlobalViewModel.getXpubInfo(mActivity);
     }
 
     private void export() {
@@ -77,19 +78,17 @@ public class ExportXpubGuideFragment extends BaseFragment<ExportXpubGuideBinding
             case COBO:
                 navigate(R.id.export_xpub_cobo);
                 break;
+            case BTCPAY:
             case WASABI:
-                exportXpub();
+                exportXpub(watchWallet);
                 break;
             case BLUE:
                 navigate(R.id.action_to_export_xpub_blue);
                 break;
-            case GENERIC:
-                //navigate(R.id.export_electrum_ypub);
-                break;
         }
     }
 
-    public void exportXpub() {
+    private void exportXpub(WatchWallet watchWallet) {
         Storage storage = Storage.createByEnvironment(mActivity);
         if (storage == null || storage.getExternalDir() == null) {
             showNoSdcardModal(mActivity);
@@ -97,14 +96,16 @@ public class ExportXpubGuideFragment extends BaseFragment<ExportXpubGuideBinding
             ModalDialog modalDialog = ModalDialog.newInstance();
             ExportSdcardModalBinding binding = DataBindingUtil.inflate(LayoutInflater.from(mActivity),
                     R.layout.export_sdcard_modal, null, false);
+
+            String fileName = getExportFileName(watchWallet);
             binding.title.setText(R.string.export_xpub_text_file);
-            binding.fileName.setText(WASABI_XPUB_FILENAME);
+            binding.fileName.setText(fileName);
             binding.actionHint.setVisibility(View.GONE);
             binding.cancel.setOnClickListener(vv -> modalDialog.dismiss());
             binding.confirm.setOnClickListener(vv -> {
                 modalDialog.dismiss();
-                if (writeToSdcard(storage, wasabiXpubJson.toString(), WASABI_XPUB_FILENAME)) {
-                    Runnable runnable = null;
+                if (writeToSdcard(storage, xpubJson.toString(), fileName)) {
+                    Runnable runnable;
                     if (mActivity instanceof SetupVaultActivity) {
                         runnable = () -> navigate(R.id.action_to_setupCompleteFragment);
                     } else {
@@ -118,10 +119,20 @@ public class ExportXpubGuideFragment extends BaseFragment<ExportXpubGuideBinding
         }
     }
 
+    private String getExportFileName(WatchWallet watchWallet) {
+        if (watchWallet == WatchWallet.WASABI) {
+            return WASABI_XPUB_FILENAME;
+        } else if(watchWallet == WatchWallet.BTCPAY) {
+            return BTCPAY_XPUB_FILENAME;
+        }
+        return "";
+    }
+
     private int getButtonText() {
         switch (watchWallet) {
             case ELECTRUM:
                 return R.string.show_master_public_key_qrcode;
+            case BTCPAY:
             case WASABI:
                 return R.string.export_wallet;
             case COBO:
@@ -137,6 +148,8 @@ public class ExportXpubGuideFragment extends BaseFragment<ExportXpubGuideBinding
                 return R.string.export_xpub_guide_title_electrum;
             case WASABI:
                 return R.string.export_xpub_guide_title_wasabi;
+            case BTCPAY:
+                return R.string.export_xpub_guide_title_btcpay;
             case COBO:
                 return R.string.export_xpub_guide_title_cobo;
             case BLUE:
@@ -149,6 +162,8 @@ public class ExportXpubGuideFragment extends BaseFragment<ExportXpubGuideBinding
         switch (watchWallet) {
             case ELECTRUM:
                 return R.string.export_xpub_guide_text1_electrum;
+            case BTCPAY:
+                return R.string.export_xpub_guide_text1_btcpay;
             case WASABI:
                 return R.string.export_xpub_guide_text1_wasabi;
             case COBO:
@@ -165,6 +180,8 @@ public class ExportXpubGuideFragment extends BaseFragment<ExportXpubGuideBinding
                 return R.string.export_xpub_guide_text2_electrum;
             case WASABI:
                 return R.string.export_xpub_guide_text2_wasabi;
+            case BTCPAY:
+                return R.string.export_xpub_guide_text2_btcpay;
             case COBO:
                 return R.string.export_xpub_guide_text2_cobo;
             case BLUE:
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/setting/ChooseWatchWalletFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/setting/ChooseWatchWalletFragment.java
index bb6b80d..552a374 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/setting/ChooseWatchWalletFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/setting/ChooseWatchWalletFragment.java
@@ -64,21 +64,14 @@ public class ChooseWatchWalletFragment extends ListPreferenceFragment {
     }
 
     private void next() {
-        int navId = 0;
+        int navId;
         Bundle data = new Bundle();
         WatchWallet selectWatchOnlyWallet = getWatchWallet(mActivity);
-        switch (selectWatchOnlyWallet) {
-            case GENERIC:
-                data.putInt(KEY_TITLE, R.string.select_address_format);
-                navId = R.id.action_to_selectAddressFormatFragment;
-                break;
-            case COBO:
-            case WASABI:
-            case ELECTRUM:
-            case BLUE:
-                navId = R.id.action_to_export_xpub_guide;
-                break;
-
+        if (selectWatchOnlyWallet.supportSwitchAccount()) {
+            data.putInt(KEY_TITLE, R.string.select_address_format);
+            navId = R.id.action_to_selectAddressFormatFragment;
+        } else {
+            navId = R.id.action_to_export_xpub_guide;
         }
         navigate(navId, data);
     }
@@ -114,13 +107,13 @@ public class ChooseWatchWalletFragment extends ListPreferenceFragment {
     }
 
     private void setWatchWallet() {
-        prefs.edit().putString(SETTING_CHOOSE_WATCH_WALLET, value).apply();
-        if (value.equals(WatchWallet.COBO.getWalletId())
-                || value.equals(WatchWallet.ELECTRUM.getWalletId())) {
-            prefs.edit().putString(SETTING_ADDRESS_FORMAT, Coins.Account.P2SH.getType()).apply();
-        } else if (value.equals(WatchWallet.WASABI.getWalletId())
-                || value.equals(WatchWallet.BLUE.getWalletId())) {
-            prefs.edit().putString(SETTING_ADDRESS_FORMAT, Coins.Account.SegWit.getType()).apply();
+        if (prefs.edit().putString(SETTING_CHOOSE_WATCH_WALLET, value).commit()) {
+            WatchWallet wallet = getWatchWallet(mActivity);
+            if (wallet.supportNativeSegwit()) {
+                prefs.edit().putString(SETTING_ADDRESS_FORMAT, Coins.Account.SegWit.getType()).apply();
+            } else if (wallet.supportNestedSegwit()) {
+                prefs.edit().putString(SETTING_ADDRESS_FORMAT, Coins.Account.P2SH.getType()).apply();
+            }
         }
     }
 }
diff --git a/app/src/main/java/com/cobo/cold/ui/fragment/setup/SetupWatchWalletFragment.java b/app/src/main/java/com/cobo/cold/ui/fragment/setup/SetupWatchWalletFragment.java
index 76bef01..9a8b7d8 100644
--- a/app/src/main/java/com/cobo/cold/ui/fragment/setup/SetupWatchWalletFragment.java
+++ b/app/src/main/java/com/cobo/cold/ui/fragment/setup/SetupWatchWalletFragment.java
@@ -17,15 +17,10 @@
 
 package com.cobo.cold.ui.fragment.setup;
 
-import android.os.Bundle;
 import android.view.View;
 
 import com.cobo.cold.R;
 import com.cobo.cold.databinding.SetupWatchWalletBinding;
-import com.cobo.cold.viewmodel.WatchWallet;
-
-import static com.cobo.cold.ui.fragment.Constants.KEY_TITLE;
-import static com.cobo.cold.viewmodel.WatchWallet.getWatchWallet;
 
 public class SetupWatchWalletFragment extends SetupVaultBaseFragment<SetupWatchWalletBinding> {
 
@@ -37,21 +32,6 @@ public class SetupWatchWalletFragment extends SetupVaultBaseFragment<SetupWatchW
     @Override
     protected void init(View view) {
         super.init(view);
-        mBinding.complete.setOnClickListener(v -> complete());
-    }
-
-    private void complete() {
-        int navId = 0;
-        Bundle data = new Bundle();
-        WatchWallet selectWatchOnlyWallet = getWatchWallet(mActivity);
-        switch (selectWatchOnlyWallet) {
-            case ELECTRUM:
-            case COBO:
-            case WASABI:
-            case BLUE:
-                navId = R.id.action_to_export_xpub_guide;
-                break;
-        }
-        navigate(navId, data);
+        mBinding.complete.setOnClickListener(v -> navigate(R.id.action_to_export_xpub_guide));
     }
 }
diff --git a/app/src/main/java/com/cobo/cold/viewmodel/ElectrumViewModel.java b/app/src/main/java/com/cobo/cold/viewmodel/ElectrumViewModel.java
index c4c19c8..41debcb 100644
--- a/app/src/main/java/com/cobo/cold/viewmodel/ElectrumViewModel.java
+++ b/app/src/main/java/com/cobo/cold/viewmodel/ElectrumViewModel.java
@@ -28,8 +28,6 @@ import com.cobo.coinlib.coins.BTC.Electrum.ElectrumTx;
 import com.cobo.coinlib.coins.BTC.Electrum.TransactionInput;
 import com.cobo.coinlib.coins.BTC.Electrum.TransactionOutput;
 import com.cobo.cold.AppExecutors;
-import com.cobo.cold.DataRepository;
-import com.cobo.cold.MainApplication;
 import com.cobo.cold.update.utils.FileUtils;
 import com.cobo.cold.update.utils.Storage;
 
@@ -46,20 +44,15 @@ import java.util.regex.Pattern;
 
 public class ElectrumViewModel extends AndroidViewModel {
 
-    public static final String ELECTRUM_SIGN_ID = "electrum_sign_id";
-
     private static Pattern signedTxnPattern = Pattern.compile("^signed_[0-9a-fA-F]{8}.txn$");
-    private final DataRepository mRepo;
-    private MutableLiveData<String> exPub = new MutableLiveData<>();
     private Storage storage;
 
     public ElectrumViewModel(@NonNull Application application) {
         super(application);
-        mRepo = MainApplication.getApplication().getRepository();
         storage = Storage.createByEnvironment(application);
     }
 
-    public static JSONObject adapt(ElectrumTx tx) throws JSONException {
+    static JSONObject adapt(ElectrumTx tx) throws JSONException {
         JSONObject object = new JSONObject();
         JSONArray inputs = new JSONArray();
         JSONArray outputs = new JSONArray();
diff --git a/app/src/main/java/com/cobo/cold/viewmodel/PsbtViewModel.java b/app/src/main/java/com/cobo/cold/viewmodel/PsbtViewModel.java
index 5f607e2..adf5af2 100644
--- a/app/src/main/java/com/cobo/cold/viewmodel/PsbtViewModel.java
+++ b/app/src/main/java/com/cobo/cold/viewmodel/PsbtViewModel.java
@@ -45,10 +45,6 @@ import static com.cobo.cold.viewmodel.GlobalViewModel.getAccount;
 
 
 public class PsbtViewModel extends AndroidViewModel {
-
-    public static final String WASABI_SIGN_ID = "wasabi_sign_id";
-    public static final String BLUE_WALLET_SIGN_ID = "blue_wallet_sign_id";
-    public static final String GENERIC_WALLET_SIGN_ID = "generic_wallet_sign_id";
     private static Pattern signedTxnPattern = Pattern.compile("^signed_[0-9a-fA-F]{8}.psbt$");
     private Storage storage;
 
diff --git a/app/src/main/java/com/cobo/cold/viewmodel/TxConfirmViewModel.java b/app/src/main/java/com/cobo/cold/viewmodel/TxConfirmViewModel.java
index e3e1f17..5838061 100644
--- a/app/src/main/java/com/cobo/cold/viewmodel/TxConfirmViewModel.java
+++ b/app/src/main/java/com/cobo/cold/viewmodel/TxConfirmViewModel.java
@@ -82,12 +82,9 @@ import static com.cobo.cold.viewmodel.AddAddressViewModel.AddAddressTask.getAddr
 import static com.cobo.cold.ui.fragment.main.FeeAttackChecking.FeeAttackCheckingResult.DUPLICATE_TX;
 import static com.cobo.cold.ui.fragment.main.FeeAttackChecking.FeeAttackCheckingResult.NORMAL;
 import static com.cobo.cold.ui.fragment.main.FeeAttackChecking.FeeAttackCheckingResult.SAME_OUTPUTS;
-import static com.cobo.cold.viewmodel.ElectrumViewModel.ELECTRUM_SIGN_ID;
 import static com.cobo.cold.viewmodel.ElectrumViewModel.adapt;
 import static com.cobo.cold.viewmodel.GlobalViewModel.getAccount;
-import static com.cobo.cold.viewmodel.PsbtViewModel.BLUE_WALLET_SIGN_ID;
-import static com.cobo.cold.viewmodel.PsbtViewModel.GENERIC_WALLET_SIGN_ID;
-import static com.cobo.cold.viewmodel.PsbtViewModel.WASABI_SIGN_ID;
+import static com.cobo.cold.viewmodel.WatchWallet.ELECTRUM_SIGN_ID;
 
 public class TxConfirmViewModel extends AndroidViewModel {
 
@@ -105,8 +102,6 @@ public class TxConfirmViewModel extends AndroidViewModel {
     private String coinCode;
     private final MutableLiveData<String> signState = new MutableLiveData<>();
     private AuthenticateModal.OnVerify.VerifyToken token;
-    private TxEntity previousSignedTx;
-
 
     public TxConfirmViewModel(@NonNull Application application) {
         super(application);
@@ -151,10 +146,6 @@ public class TxConfirmViewModel extends AndroidViewModel {
         });
     }
 
-    public TxEntity getPreviousSignTx() {
-        return previousSignedTx;
-    }
-
     private void feeAttackChecking(TxEntity txEntity) {
         AppExecutors.getInstance().diskIO().execute(() -> {
             String inputs = txEntity.getFrom();
@@ -162,7 +153,6 @@ public class TxConfirmViewModel extends AndroidViewModel {
             List<TxEntity> txs = mRepository.loadAllTxSync(Coins.BTC.coinId());
             for (TxEntity tx : txs) {
                 if (inputs.equals(tx.getFrom()) && outputs.equals(tx.getTo())) {
-                    previousSignedTx = tx;
                     feeAttachCheckingResult.postValue(DUPLICATE_TX);
                     break;
                 } else if (outputs.equals(tx.getTo())) {
@@ -270,7 +260,7 @@ public class TxConfirmViewModel extends AndroidViewModel {
     private JSONObject parsePsbtTx(JSONObject adaptTx) throws JSONException {
         TransactionProtoc.SignTransaction.Builder builder = TransactionProtoc.SignTransaction.newBuilder();
         builder.setCoinCode(Coins.BTC.coinCode())
-                .setSignId(getSignId())
+                .setSignId(WatchWallet.getWatchWallet(getApplication()).getSignId())
                 .setTimestamp(generateAutoIncreaseId())
                 .setDecimal(8);
         String signTransaction = new JsonFormat().printToString(builder.build());
@@ -279,20 +269,6 @@ public class TxConfirmViewModel extends AndroidViewModel {
         return signTx;
     }
 
-    private String getSignId() {
-        switch (WatchWallet.getWatchWallet(getApplication())) {
-            case BLUE:
-                return BLUE_WALLET_SIGN_ID;
-            case WASABI:
-                return WASABI_SIGN_ID;
-            case GENERIC:
-                return GENERIC_WALLET_SIGN_ID;
-            case ELECTRUM:
-                return ELECTRUM_SIGN_ID;
-        }
-        return null;
-    }
-
     private long generateAutoIncreaseId() {
         List<TxEntity> txEntityList = mRepository.loadElectrumTxsSync(Coins.BTC.coinId());
         if (txEntityList == null || txEntityList.isEmpty()) {
diff --git a/app/src/main/java/com/cobo/cold/viewmodel/WatchWallet.java b/app/src/main/java/com/cobo/cold/viewmodel/WatchWallet.java
index f179c9b..3eaec09 100644
--- a/app/src/main/java/com/cobo/cold/viewmodel/WatchWallet.java
+++ b/app/src/main/java/com/cobo/cold/viewmodel/WatchWallet.java
@@ -29,7 +29,14 @@ public enum WatchWallet {
     ELECTRUM("1"),
     WASABI("2"),
     BLUE("3"),
-    GENERIC("4");
+    BTCPAY("4"),
+    GENERIC("100");
+
+    public static final String ELECTRUM_SIGN_ID = "electrum_sign_id";
+    public static final String WASABI_SIGN_ID = "wasabi_sign_id";
+    public static final String BLUE_WALLET_SIGN_ID = "blue_wallet_sign_id";
+    public static final String BTCPAY_SIGN_ID = "blue_wallet_sign_id";
+    public static final String GENERIC_WALLET_SIGN_ID = "generic_wallet_sign_id";
 
     private String walletId;
     WatchWallet(String walletId) {
@@ -41,8 +48,12 @@ public enum WatchWallet {
     }
 
     public String getWalletName(Context context) {
-        return context.getResources()
-                .getStringArray(R.array.watch_wallet_list)[Integer.parseInt(walletId)];
+        String[] wallets = context.getResources().getStringArray(R.array.watch_wallet_list);
+        if (walletId.equals(GENERIC.getWalletId())) {
+            return wallets[wallets.length - 1];
+        } else {
+            return wallets[Integer.parseInt(walletId)];
+        }
     }
 
     public static WatchWallet getWatchWallet(Context context) {
@@ -62,6 +73,7 @@ public enum WatchWallet {
         switch (this) {
             case GENERIC:
             case BLUE:
+            case BTCPAY:
             case WASABI:
                 return true;
                 default:return false;
@@ -92,9 +104,51 @@ public enum WatchWallet {
         switch (this) {
             case ELECTRUM:
             case GENERIC:
+            case BTCPAY:
             case WASABI:
                 return true;
             default:return false;
         }
     }
+
+    public String getSignId() {
+        switch (this) {
+            case BLUE:
+                return BLUE_WALLET_SIGN_ID;
+            case WASABI:
+                return WASABI_SIGN_ID;
+            case GENERIC:
+                return GENERIC_WALLET_SIGN_ID;
+            case ELECTRUM:
+                return ELECTRUM_SIGN_ID;
+            case BTCPAY:
+                return BTCPAY_SIGN_ID;
+        }
+        return "";
+    }
+
+    public boolean supportSwitchAccount() {
+        return this == WatchWallet.GENERIC;
+    }
+
+    public boolean supportNativeSegwit() {
+        switch (this) {
+            case GENERIC:
+            case BTCPAY:
+            case BLUE:
+            case WASABI:
+                return true;
+        }
+        return false;
+    }
+
+    public boolean supportNestedSegwit() {
+        switch (this) {
+            case COBO:
+            case ELECTRUM:
+            case GENERIC:
+                return true;
+        }
+        return false;
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/electrum_tx_detail.xml b/app/src/main/res/layout/electrum_tx_detail.xml
index af9fc26..bd8bb81 100644
--- a/app/src/main/res/layout/electrum_tx_detail.xml
+++ b/app/src/main/res/layout/electrum_tx_detail.xml
@@ -354,7 +354,7 @@
                 android:layout_marginTop="16dp"
                 android:layout_marginHorizontal="16dp"
                 android:text="@string/export_signed_txn_file"/>
-            <TextView
+            <com.cobo.cold.ui.views.SpanedTextView
                 android:id="@+id/broadcast_guide"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 2331379..0b60dd5 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -269,12 +269,12 @@
     </string-array>
     <string name="export_to_electrum">在 Electrum 创建观察钱包</string>
     <string name="export_to_electrum_guide"><![CDATA[
-1. 打开 Electrum，新建钱包 <br>
-2. 选择“标准钱包” <br>
-3. 选择“使用主公钥” <br>
-4. 在输入主公钥页面点击照相机按钮，扫描主公钥二维码（点击下方按钮查看二维码）<br>
-5. 设置钱包密码 <br>
-6. 进入观察钱包
+        1. 打开 Electrum，新建钱包 <br>
+        2. 选择“标准钱包” <br>
+        3. 选择“使用主公钥” <br>
+        4. 在输入主公钥页面点击照相机按钮，扫描主公钥二维码（点击下方按钮查看二维码）<br>
+        5. 设置钱包密码 <br>
+        6. 进入观察钱包
     ]]></string>
     <string name="export_xpub">查看主公钥二维码</string>
     <string name="export_to_electrum_guide_hint">Electrum 创建指引</string>
@@ -338,11 +338,13 @@
     <string name="change_address">找零地址</string>
     <string name="export_xpub_guide_title_electrum">导出到Electrum</string>
     <string name="export_xpub_guide_title_wasabi">导出到Wasabi Wallet</string>
+    <string name="export_xpub_guide_title_btcpay">导出到BTCPay</string>
     <string name="export_xpub_guide_title_cobo">导出到Cobo金库移动端</string>
     <string name="export_xpub_guide_title_blue">导出到BlueWallet</string>
     <string name="export_xpub_guide_text1_electrum">Electrum 导入指引:</string>
     <string name="export_xpub_guide_text1_cobo">Cobo 金库移动端导入指引:</string>
     <string name="export_xpub_guide_text1_wasabi">Wasabi Wallet 导入指引:</string>
+    <string name="export_xpub_guide_text1_btcpay">BTCPay Server 导入指引:</string>
     <string name="export_xpub_guide_text1_blue">BlueWallet 导入指引:</string>
     <string name="export_xpub_guide_text2_electrum"><![CDATA[
         1. 打开 Electrum，新建钱包 <br>
@@ -371,6 +373,15 @@
         <font color="#808080">请确保 Cobo 金库装有TF卡后再进行导出（仅支持FAT32格式，容量不能超过32G）<font/>
     ]]></string>
 
+    <string name="export_xpub_guide_text2_btcpay"><![CDATA[
+        1. 打开 BTCPay Server，前往【Store 设置--General--Derivation Scheme--Import from…】<br>
+        2. 选择“…a wallet file (Electrum, wasabi, Cobo Vault, ColdCard)”<br>
+        3. 打开 Cobo 金库导出的钱包文件（点击下方按钮导出）<br>
+        4. 点击<font color="#00cdc3">“Submit”<font/><br>
+        5. 点击<font color="#00cdc3">“Confirm”<font/><br><br>
+        <font color="#808080">请确保 Cobo 金库装有TF卡后再进行导出（仅支持FAT32格式，容量不能超过32G）<font/>
+    ]]></string>
+
     <string name="export_xpub_guide_text2_blue"><![CDATA[
         1. 打开 BlueWallet，添加新钱包<br>
         2. 选择“导入钱包”<br>
@@ -400,6 +411,19 @@
         3. 扫描 Cobo 金库二维码<br>
     ]]></string>
 
+    <string name="wasabi_broadcast_guide"><![CDATA[
+        导出后，用Wasabi进行广播<br>
+        前往【wasabi--Tools--Transactions Broadcaster--Import transaction】，打开该文件
+    ]]></string>
+
+    <string name="btcpay_broadcast_guide"><![CDATA[
+        导出后，用 BTCPay Server 进行广播<br>
+        1. 前往【BTCPay--PSBT】，打开该文件<br>
+        2. 点击“Decode”<br>
+        3. 点击“Other Actions” 选择“Review”<br>
+        4. 检查交易无误后点击“Broadcast”<br>
+    ]]></string>
+
     <string name="show_master_public_key_qrcode">查看主公钥二维码</string>
     <string name="show_qrcode">查看二维码</string>
     <string name="export_wallet">导出钱包</string>
@@ -432,6 +456,7 @@
         <item>Electrum</item>
         <item>Wasabi Wallet</item>
         <item>BlueWallet</item>
+        <item>BTCPay Server</item>
         <item>通用钱包</item>
     </string-array>
 
@@ -457,5 +482,6 @@
     <string name="reboot_hint">请重新启动机器，多次重试未果请联系客服：support@cobo.com\n 状态码:%s</string>
     <string name="reboot">重新启动</string>
     <string name="clear_and_power_off">删除所有信息并关机</string>
+    <string name="btcpay_scan_hint">BTCPay Server 暂不支持将交易导成二维码，您可将待签交易导出成文件</string>
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 4649894..10c2596 100755
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -84,6 +84,7 @@
         <item>Electrum</item>
         <item>Wasabi Wallet</item>
         <item>BlueWallet</item>
+        <item>BTCPay Server</item>
         <item>Generic Wallet</item>
     </string-array>
 
@@ -93,6 +94,7 @@
         <item>2</item>
         <item>3</item>
         <item>4</item>
+        <item>100</item>
     </string-array>
 
 
@@ -324,8 +326,11 @@
     </string-array>
     <string name="export_to_electrum">Create Watch-Only Wallet in Electrum</string>
     <string name="export_to_electrum_guide"><![CDATA[
-1. Open Electrum and create a new wallet. <br>2. Choose “Standard wallet”. <br>3. Choose “Use a master key”. <br>4. Touch “Show Master Public Key” below then click the camera icon in the “Create keystore from a master key” window in Electrum to scan the QR code that displays on Cobo Vault.
- <br>5. Set a password. <br>6. Enter the watch-only wallet.
+        1. Open Electrum and create a new wallet. <br>
+        2. Choose “Standard wallet”. <br>
+        3. Choose “Use a master key”. <br>
+        4. Touch “Show Master Public Key” below then click the camera icon in the “Create keystore from a master key” window in Electrum to scan the QR code that displays on Cobo Vault.<br>
+        5. Set a password. <br>6. Enter the watch-only wallet.
     ]]></string>
     <string name="export_xpub">Show Master Public Key</string>
     <string name="export_to_electrum_guide_hint">How to create a watch-only wallet with Electrum:</string>
@@ -389,11 +394,13 @@
     <string name="change_address">Change Address</string>
     <string name="export_xpub_guide_title_electrum">Export to Electrum Watch-Only</string>
     <string name="export_xpub_guide_title_wasabi">Export to Wasabi Watch-Only</string>
+    <string name="export_xpub_guide_title_btcpay">Export to BTCPay Watch-Only</string>
     <string name="export_xpub_guide_title_cobo">Export to Cobo Vault Watch-Only</string>
     <string name="export_xpub_guide_title_blue">Export to BlueWallet Watch-Only</string>
     <string name="export_xpub_guide_text1_electrum">How to create a watch-only wallet with Electrum:</string>
     <string name="export_xpub_guide_text1_cobo">How to create a watch-only wallet with the Cobo Vault mobile app:</string>
     <string name="export_xpub_guide_text1_wasabi">How to create a watch-only wallet with Wasabi Wallet:</string>
+    <string name="export_xpub_guide_text1_btcpay">How to create a watch-only wallet with BTCPay Server:</string>
     <string name="export_xpub_guide_text1_blue">How to create a watch-only wallet with BlueWallet:</string>
     <string name="export_xpub_guide_text2_electrum"><![CDATA[
         1. Open Electrum and create a new wallet. <br>
@@ -424,6 +431,15 @@
         <font color="#808080">Please make sure you have inserted a FAT32 format microSD card with capacity 32GB or less before exporting.<br>
         Wasabi requires the xPub, hardware wallet fingerprint, and firmware version to be used as a watch-only wallet. This information will be exported if you touch “Export with MicroSD” below.<font/>
     ]]></string>
+    <string name="export_xpub_guide_text2_btcpay"><![CDATA[
+        1. In BTCPay Server, Store Settings > General > Derivation Scheme > Import from… <br>
+        2. Choose "…a wallet file (Electrum, wasabi, Cobo Vault, ColdCard)"<br>
+        3. Touch <font color="#00cdc3">"Export Wallet"<font/> below then open the file in BTCPay<br>
+        4. Click <font color="#00cdc3">"Submit"<font/><br>
+        5. Click <font color="#00cdc3">"Confirm"<font/>.<br>
+        <font color="#808080">Please make sure you have inserted a FAT32 format microSD card with capacity 32GB or less before exporting.<br>
+        Wasabi requires the xPub, hardware wallet fingerprint, and firmware version to be used as a watch-only wallet. This information will be exported if you touch “Export with MicroSD” below.<font/>
+    ]]></string>
 
     <string name="export_xpub_guide_text2_blue"><![CDATA[
         1. Open BlueWallet and add a new wallet.<br>
@@ -455,6 +471,18 @@
         6. Enter the watch-only wallet.
     ]]></string>
 
+    <string name="wasabi_broadcast_guide"><![CDATA[
+       Broadcast with Wasabi<br>
+       go to [wasabi--Tools--Transactions Broadcaster--Import transaction] open this file to broadcast
+    ]]></string>
+
+    <string name="btcpay_broadcast_guide"><![CDATA[
+        导出后，用 BTCPay Server 进行广播<br>
+        1. In BTCPay, go to PSBT tab of the wallet and upload the signed PSBT file<br>
+        2. Click "Decode"<br>
+        3. Click "Other Actions" and select "Review"<br>
+        4. Review your transactions and click "Broadcast" to broadcast it on the network
+    ]]></string>
     <string name="show_master_public_key_qrcode">Display Master Public Key QR Code</string>
     <string name="show_qrcode">Display QR Code</string>
     <string name="export_wallet">Export Wallet</string>
@@ -474,8 +502,7 @@
     <string name="script_type">Script Type:</string>
     <string name="address_path">Account Key Path:</string>
     <string name="xpub">Account Extended Public Key:</string>
-    <string name="wallet_info_hint">* Do not share this public key with anyone. Account extended public keys can be used to identify your addresses and cryptocurrency amounts.
-</string>
+    <string name="wallet_info_hint">* Do not share this public key with anyone. Account extended public keys can be used to identify your addresses and cryptocurrency amounts.</string>
     <string name="confirm_add_address">Confirm</string>
     <string name="watch_wallet_not_match">Please use %s generate unsigned transaction</string>
     <string name="scan_qrcode_with_generic_wallet">Please scan the QR code with the wallet you wish to use as a watch-only wallet.</string>
@@ -496,5 +523,6 @@
     <string name="reboot_hint">Please restart or contact us at support@cobo.com\n Status Code:%s</string>
     <string name="reboot">Restart</string>
     <string name="clear_and_power_off">Erase all Information and Power off</string>
+    <string name="btcpay_scan_hint">BTCPay Server does not support exporting transactions by QR code. Please export transactions using microSD.</string>
 
 </resources>