Examples with Transaction org.bitcoinj.core.Transaction used on opensource projects

Example 41 with Transaction

use of org.bitcoinj.core.Transaction in project samourai-wallet-android by Samourai-Wallet.

the class SendFactory method signTransactionForSweep.

public Transaction signTransactionForSweep(Transaction unsignedTx, PrivKeyReader privKeyReader) {
    HashMap<String, ECKey> keyBag = new HashMap<String, ECKey>();
    for (TransactionInput input : unsignedTx.getInputs()) {
        try {
            byte[] scriptBytes = input.getOutpoint().getConnectedPubKeyScript();
            String script = Hex.toHexString(scriptBytes);
            String address = null;
            if (Bech32Util.getInstance().isBech32Script(script)) {
                try {
                    address = Bech32Util.getInstance().getAddressFromScript(script);
                } catch (Exception e) {
                    ;
                }
            } else {
                address = new Script(scriptBytes).getToAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
            }
            Log.i("address from script", address);
            ECKey ecKey = null;
            try {
                DumpedPrivateKey pk = new DumpedPrivateKey(SamouraiWallet.getInstance().getCurrentNetworkParams(), privKeyReader.getKey().getPrivateKeyAsWiF(SamouraiWallet.getInstance().getCurrentNetworkParams()));
                ecKey = pk.getKey();
            // Log.i("SendFactory", "ECKey address:" + ecKey.toAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString());
            } catch (AddressFormatException afe) {
                afe.printStackTrace();
                continue;
            }
            if (ecKey != null) {
                keyBag.put(input.getOutpoint().toString(), ecKey);
            } else {
                Toast.makeText(context, R.string.cannot_recognize_privkey, Toast.LENGTH_SHORT).show();
            // Log.i("ECKey error", "cannot process private key");
            }
        } catch (ScriptException se) {
            ;
        } catch (Exception e) {
            ;
        }
    }
    Transaction signedTx = signTransaction(unsignedTx, keyBag);
    if (signedTx == null) {
        return null;
    } else {
        String hexString = new String(Hex.encode(signedTx.bitcoinSerialize()));
        if (hexString.length() > (100 * 1024)) {
            Toast.makeText(context, R.string.tx_length_error, Toast.LENGTH_SHORT).show();
        // Log.i("SendFactory", "Transaction length too long");
        }
        return signedTx;
    }
}

Example 42 with Transaction

use of org.bitcoinj.core.Transaction in project samourai-wallet-android by Samourai-Wallet.

the class SendFactory method signTransaction.

public Transaction signTransaction(Transaction unsignedTx, int account) {
    HashMap<String, ECKey> keyBag = new HashMap<String, ECKey>();
    for (TransactionInput input : unsignedTx.getInputs()) {
        try {
            byte[] scriptBytes = input.getOutpoint().getConnectedPubKeyScript();
            String address = null;
            // Log.i("SendFactory", "connected pubkey script:" + Hex.toHexString(scriptBytes));
            if (Bech32Util.getInstance().isBech32Script(Hex.toHexString(scriptBytes))) {
                address = Bech32Util.getInstance().getAddressFromScript(Hex.toHexString(scriptBytes));
            } else {
                address = new Script(scriptBytes).getToAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
            }
            // Log.i("SendFactory", "address from script:" + address);
            ECKey ecKey = null;
            ecKey = getPrivKey(address, account);
            if (ecKey != null) {
                keyBag.put(input.getOutpoint().toString(), ecKey);
            } else {
                throw new RuntimeException("ECKey error: cannot process private key");
            // Log.i("ECKey error", "cannot process private key");
            }
        } catch (ScriptException se) {
            ;
        } catch (Exception e) {
            ;
        }
    }
    Transaction signedTx = signTransaction(unsignedTx, keyBag);
    if (signedTx == null) {
        return null;
    } else {
        String hexString = new String(Hex.encode(signedTx.bitcoinSerialize()));
        if (hexString.length() > (100 * 1024)) {
            Toast.makeText(context, R.string.tx_length_error, Toast.LENGTH_SHORT).show();
        // Log.i("SendFactory", "Transaction length too long");
        }
        return signedTx;
    }
}

Example 43 with Transaction

use of org.bitcoinj.core.Transaction in project samourai-wallet-android by Samourai-Wallet.

the class BatchSendActivity method doSpend.

private void doSpend() {
    final HashMap<String, BigInteger> receivers = new HashMap<String, BigInteger>();
    long amount = 0L;
    for (BatchSendUtil.BatchSend _data : data) {
        Log.d("BatchSendActivity", "output:" + _data.amount);
        Log.d("BatchSendActivity", "output:" + _data.addr);
        Log.d("BatchSendActivity", "output:" + _data.pcode);
        amount += _data.amount;
        if (receivers.containsKey(_data.addr)) {
            BigInteger _amount = receivers.get(_data.addr);
            receivers.put(_data.addr, _amount.add(BigInteger.valueOf(_data.amount)));
        } else {
            receivers.put(_data.addr, BigInteger.valueOf(_data.amount));
        }
    }
    Log.d("BatchSendActivity", "amount:" + amount);
    List<UTXO> utxos = APIFactory.getInstance(BatchSendActivity.this).getUtxos(true);
    Collections.sort(utxos, new UTXO.UTXOComparator());
    List<UTXO> selectedUTXO = new ArrayList<UTXO>();
    int p2pkh = 0;
    int p2sh_p2wpkh = 0;
    int p2wpkh = 0;
    long totalValueSelected = 0L;
    int totalSelected = 0;
    for (UTXO utxo : utxos) {
        Log.d("BatchSendActivity", "utxo value:" + utxo.getValue());
        selectedUTXO.add(utxo);
        totalValueSelected += utxo.getValue();
        totalSelected += utxo.getOutpoints().size();
        Triple<Integer, Integer, Integer> outpointTypes = FeeUtil.getInstance().getOutpointCount(new Vector(utxo.getOutpoints()));
        p2pkh += outpointTypes.getLeft();
        p2sh_p2wpkh += outpointTypes.getMiddle();
        p2wpkh += outpointTypes.getRight();
        if (totalValueSelected >= (amount + SamouraiWallet.bDust.longValue() + FeeUtil.getInstance().estimatedFeeSegwit(p2pkh, p2sh_p2wpkh, p2wpkh, receivers.size() + 1).longValue())) {
            break;
        }
    }
    Log.d("BatchSendActivity", "totalSelected:" + totalSelected);
    Log.d("BatchSendActivity", "totalValueSelected:" + totalValueSelected);
    final List<MyTransactionOutPoint> outpoints = new ArrayList<MyTransactionOutPoint>();
    for (UTXO utxo : selectedUTXO) {
        outpoints.addAll(utxo.getOutpoints());
        for (MyTransactionOutPoint out : utxo.getOutpoints()) {
            Log.d("BatchSendActivity", "outpoint hash:" + out.getTxHash().toString());
            Log.d("BatchSendActivity", "outpoint idx:" + out.getTxOutputN());
            Log.d("BatchSendActivity", "outpoint address:" + out.getAddress());
        }
    }
    Triple<Integer, Integer, Integer> outpointTypes = FeeUtil.getInstance().getOutpointCount(new Vector(outpoints));
    BigInteger fee = FeeUtil.getInstance().estimatedFeeSegwit(outpointTypes.getLeft(), outpointTypes.getMiddle(), outpointTypes.getRight(), receivers.size() + 1);
    Log.d("BatchSendActivity", "fee:" + fee.longValue());
    if (amount + fee.longValue() > balance) {
        Toast.makeText(BatchSendActivity.this, R.string.insufficient_funds, Toast.LENGTH_SHORT).show();
        return;
    }
    long changeAmount = totalValueSelected - (amount + fee.longValue());
    String change_address = null;
    int change_idx = 0;
    if (changeAmount > 0L) {
        change_idx = BIP84Util.getInstance(BatchSendActivity.this).getWallet().getAccount(0).getChange().getAddrIdx();
        change_address = BIP84Util.getInstance(BatchSendActivity.this).getAddressAt(AddressFactory.CHANGE_CHAIN, change_idx).getBech32AsString();
        receivers.put(change_address, BigInteger.valueOf(changeAmount));
        Log.d("BatchSendActivity", "change output:" + changeAmount);
        Log.d("BatchSendActivity", "change output:" + change_address);
    }
    Transaction tx = SendFactory.getInstance(BatchSendActivity.this).makeTransaction(0, outpoints, receivers);
    if (tx != null) {
        final RBFSpend rbf;
        if (PrefsUtil.getInstance(BatchSendActivity.this).getValue(PrefsUtil.RBF_OPT_IN, false) == true) {
            rbf = new RBFSpend();
            for (TransactionInput input : tx.getInputs()) {
                boolean _isBIP49 = false;
                boolean _isBIP84 = false;
                String _addr = null;
                String script = Hex.toHexString(input.getConnectedOutput().getScriptBytes());
                if (Bech32Util.getInstance().isBech32Script(script)) {
                    try {
                        _addr = Bech32Util.getInstance().getAddressFromScript(script);
                        _isBIP84 = true;
                    } catch (Exception e) {
                        ;
                    }
                } else {
                    Address _address = input.getConnectedOutput().getAddressFromP2SH(SamouraiWallet.getInstance().getCurrentNetworkParams());
                    if (_address != null) {
                        _addr = _address.toString();
                        _isBIP49 = true;
                    }
                }
                if (_addr == null) {
                    _addr = input.getConnectedOutput().getAddressFromP2PKHScript(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
                }
                String path = APIFactory.getInstance(BatchSendActivity.this).getUnspentPaths().get(_addr);
                if (path != null) {
                    if (_isBIP84) {
                        rbf.addKey(input.getOutpoint().toString(), path + "/84");
                    } else if (_isBIP49) {
                        rbf.addKey(input.getOutpoint().toString(), path + "/49");
                    } else {
                        rbf.addKey(input.getOutpoint().toString(), path);
                    }
                } else {
                    String pcode = BIP47Meta.getInstance().getPCode4Addr(_addr);
                    int idx = BIP47Meta.getInstance().getIdx4Addr(_addr);
                    rbf.addKey(input.getOutpoint().toString(), pcode + "/" + idx);
                }
            }
        } else {
            rbf = null;
        }
        String strChangeIsDust = "";
        String strPrivacyWarning = "";
        String strMessage = strChangeIsDust + strPrivacyWarning + "Send " + Coin.valueOf(amount).toPlainString() + " BTC. (fee:" + Coin.valueOf(fee.longValue()).toPlainString() + ")?\n";
        final long _change = changeAmount;
        final String _change_address = change_address;
        final int _change_idx = change_idx;
        final long _amount = amount;
        tx = SendFactory.getInstance(BatchSendActivity.this).signTransaction(tx, 0);
        final String hexTx = new String(Hex.encode(tx.bitcoinSerialize()));
        final String strTxHash = tx.getHashAsString();
        // Log.d("BatchSendActivity", "tx hash:" + tx.getHashAsString());
        // Log.d("BatchSendActivity", "hex signed tx:" + hexTx);
        AlertDialog.Builder dlg = new AlertDialog.Builder(BatchSendActivity.this).setTitle(R.string.app_name).setMessage(strMessage).setCancelable(false).setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {

            public void onClick(final DialogInterface dialog, int whichButton) {
                dialog.dismiss();
                if (PrefsUtil.getInstance(BatchSendActivity.this).getValue(PrefsUtil.BROADCAST_TX, true) == false) {
                    doShowTx(hexTx, strTxHash);
                    return;
                }
                SendParams.getInstance().setParams(outpoints, receivers, data, SendActivity.SPEND_SIMPLE, _change, 84, 0, "", false, false, _amount, _change_idx);
                Intent _intent = new Intent(BatchSendActivity.this, TxAnimUIActivity.class);
                startActivity(_intent);
            }
        }).setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int whichButton) {
                dialog.dismiss();
            }
        });
        if (!isFinishing()) {
            dlg.show();
        }
    } else {
        // Log.d("SendActivity", "tx error");
        Toast.makeText(BatchSendActivity.this, "tx error", Toast.LENGTH_SHORT).show();
    }
}

Example 44 with Transaction

use of org.bitcoinj.core.Transaction in project samourai-wallet-android by Samourai-Wallet.

the class TxAnimUIActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_tx_anim_ui);
    progressView = findViewById(R.id.transactionProgressView);
    progressView.reset();
    progressView.setTxStatusMessage(R.string.tx_creating_ok);
    progressView.getmArcProgress().startArc1(arcdelay);
    // make tx
    final Transaction tx = SendFactory.getInstance(TxAnimUIActivity.this).makeTransaction(SendParams.getInstance().getAccount(), SendParams.getInstance().getOutpoints(), SendParams.getInstance().getReceivers());
    if (tx == null) {
        failTx(R.string.tx_creating_ko);
    } else {
        // Toast.makeText(TxAnimUIActivity.this, "tx created OK", Toast.LENGTH_SHORT).show();
        final RBFSpend rbf;
        if (PrefsUtil.getInstance(TxAnimUIActivity.this).getValue(PrefsUtil.RBF_OPT_IN, false) == true) {
            rbf = new RBFSpend();
            for (TransactionInput input : tx.getInputs()) {
                boolean _isBIP49 = false;
                boolean _isBIP84 = false;
                String _addr = null;
                String script = Hex.toHexString(input.getConnectedOutput().getScriptBytes());
                if (Bech32Util.getInstance().isBech32Script(script)) {
                    try {
                        _addr = Bech32Util.getInstance().getAddressFromScript(script);
                        _isBIP84 = true;
                    } catch (Exception e) {
                        ;
                    }
                } else {
                    Address _address = input.getConnectedOutput().getAddressFromP2SH(SamouraiWallet.getInstance().getCurrentNetworkParams());
                    if (_address != null) {
                        _addr = _address.toString();
                        _isBIP49 = true;
                    }
                }
                if (_addr == null) {
                    _addr = input.getConnectedOutput().getAddressFromP2PKHScript(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
                }
                String path = APIFactory.getInstance(TxAnimUIActivity.this).getUnspentPaths().get(_addr);
                if (path != null) {
                    if (_isBIP84) {
                        rbf.addKey(input.getOutpoint().toString(), path + "/84");
                    } else if (_isBIP49) {
                        rbf.addKey(input.getOutpoint().toString(), path + "/49");
                    } else {
                        rbf.addKey(input.getOutpoint().toString(), path);
                    }
                } else {
                    String pcode = BIP47Meta.getInstance().getPCode4Addr(_addr);
                    int idx = BIP47Meta.getInstance().getIdx4Addr(_addr);
                    rbf.addKey(input.getOutpoint().toString(), pcode + "/" + idx);
                }
            }
        } else {
            rbf = null;
        }
        new Handler().postDelayed(new Runnable() {

            @Override
            public void run() {
                TxAnimUIActivity.this.runOnUiThread(() -> {
                    progressView.getmArcProgress().startArc2(arcdelay);
                    progressView.setTxStatusMessage(R.string.tx_signing_ok);
                });
                final Transaction _tx = SendFactory.getInstance(TxAnimUIActivity.this).signTransaction(tx, SendParams.getInstance().getAccount());
                if (_tx == null) {
                    failTx(R.string.tx_signing_ko);
                } else {
                // Toast.makeText(TxAnimUIActivity.this, "tx signed OK", Toast.LENGTH_SHORT).show();
                }
                final String hexTx = new String(Hex.encode(_tx.bitcoinSerialize()));
                Log.d("TxAnimUIActivity", "hex tx:" + hexTx);
                final String strTxHash = _tx.getHashAsString();
                resultHandler = new Handler();
                new Handler().postDelayed(new Runnable() {

                    @Override
                    public void run() {
                        TxAnimUIActivity.this.runOnUiThread(() -> {
                            progressView.getmArcProgress().startArc3(arcdelay);
                            progressView.setTxStatusMessage(R.string.tx_broadcast_ok);
                        });
                        if (PrefsUtil.getInstance(TxAnimUIActivity.this).getValue(PrefsUtil.BROADCAST_TX, true) == false) {
                            offlineTx(R.string.broadcast_off, hexTx, strTxHash);
                            return;
                        }
                        if (AppUtil.getInstance(TxAnimUIActivity.this).isOfflineMode()) {
                            offlineTx(R.string.offline_mode, hexTx, strTxHash);
                            return;
                        }
                        new Thread(new Runnable() {

                            @Override
                            public void run() {
                                Looper.prepare();
                                boolean isOK = false;
                                String response = PushTx.getInstance(TxAnimUIActivity.this).samourai(hexTx);
                                try {
                                    if (PrefsUtil.getInstance(TxAnimUIActivity.this).getValue(PrefsUtil.USE_TRUSTED_NODE, false) == true) {
                                        if (TrustedNodeUtil.getInstance().isSet()) {
                                            response = PushTx.getInstance(TxAnimUIActivity.this).trustedNode(hexTx);
                                            JSONObject jsonObject = new org.json.JSONObject(response);
                                            if (jsonObject.has("result")) {
                                                if (jsonObject.getString("result").matches("^[A-Za-z0-9]{64}$")) {
                                                    isOK = true;
                                                } else {
                                                    Toast.makeText(TxAnimUIActivity.this, R.string.trusted_node_tx_error, Toast.LENGTH_SHORT).show();
                                                    failTx(R.string.tx_broadcast_ko);
                                                }
                                            }
                                        } else {
                                            Toast.makeText(TxAnimUIActivity.this, R.string.trusted_node_not_valid, Toast.LENGTH_SHORT).show();
                                            failTx(R.string.tx_broadcast_ko);
                                        }
                                    } else {
                                        if (response != null) {
                                            JSONObject jsonObject = new org.json.JSONObject(response);
                                            if (jsonObject.has("status")) {
                                                if (jsonObject.getString("status").equals("ok")) {
                                                    isOK = true;
                                                }
                                            }
                                        } else {
                                            Toast.makeText(TxAnimUIActivity.this, R.string.pushtx_returns_null, Toast.LENGTH_SHORT).show();
                                            failTx(R.string.tx_broadcast_ko);
                                        }
                                    }
                                } catch (JSONException je) {
                                    failTx(R.string.tx_broadcast_ko);
                                }
                                final boolean _isOK = isOK;
                                resultHandler.postDelayed(new Runnable() {

                                    @Override
                                    public void run() {
                                        if (_isOK) {
                                            progressView.showCheck();
                                            progressView.setTxStatusMessage(R.string.tx_sent_ok);
                                        } else {
                                            failTx(R.string.tx_sent_ko);
                                        }
                                        handleResult(_isOK, rbf, strTxHash, hexTx, _tx);
                                    }
                                }, resultDelay);
                                Looper.loop();
                            }
                        }).start();
                    }
                }, broadcastDelay);
            }
        }, signDelay);
    }
}

Example 45 with Transaction

use of org.bitcoinj.core.Transaction in project samourai-wallet-android by Samourai-Wallet.

the class PayNymDetailsActivity method doNotifTx.

private void doNotifTx() {
    // 
    // get wallet balance
    // 
    long balance = 0L;
    try {
        balance = APIFactory.getInstance(PayNymDetailsActivity.this).getXpubAmounts().get(HD_WalletFactory.getInstance(PayNymDetailsActivity.this).get().getAccount(0).xpubstr());
    } catch (IOException ioe) {
        balance = 0L;
    } catch (MnemonicException.MnemonicLengthException mle) {
        balance = 0L;
    } catch (java.lang.NullPointerException npe) {
        balance = 0L;
    }
    final List<UTXO> selectedUTXO = new ArrayList<UTXO>();
    long totalValueSelected = 0L;
    // long change = 0L;
    BigInteger fee = null;
    // 
    // spend dust threshold amount to notification address
    // 
    long amount = SendNotifTxFactory._bNotifTxValue.longValue();
    // 
    // add Samourai Wallet fee to total amount
    // 
    amount += SendNotifTxFactory._bSWFee.longValue();
    // 
    // get unspents
    // 
    List<UTXO> utxos = null;
    if (UTXOFactory.getInstance().getTotalP2SH_P2WPKH() > amount + FeeUtil.getInstance().estimatedFeeSegwit(0, 1, 4).longValue()) {
        utxos = new ArrayList<UTXO>();
        utxos.addAll(UTXOFactory.getInstance().getAllP2SH_P2WPKH().values());
    } else {
        utxos = APIFactory.getInstance(PayNymDetailsActivity.this).getUtxos(true);
    }
    // sort in ascending order by value
    final List<UTXO> _utxos = utxos;
    Collections.sort(_utxos, new UTXO.UTXOComparator());
    Collections.reverse(_utxos);
    // 
    for (UTXO u : _utxos) {
        if (u.getValue() >= (amount + SamouraiWallet.bDust.longValue() + FeeUtil.getInstance().estimatedFee(1, 4).longValue())) {
            selectedUTXO.add(u);
            totalValueSelected += u.getValue();
            Log.d("PayNymDetailsActivity", "single output");
            Log.d("PayNymDetailsActivity", "value selected:" + u.getValue());
            Log.d("PayNymDetailsActivity", "total value selected:" + totalValueSelected);
            Log.d("PayNymDetailsActivity", "nb inputs:" + u.getOutpoints().size());
            break;
        }
    }
    // 
    // use normal fee settings
    // 
    SuggestedFee suggestedFee = FeeUtil.getInstance().getSuggestedFee();
    long lo = FeeUtil.getInstance().getLowFee().getDefaultPerKB().longValue() / 1000L;
    long mi = FeeUtil.getInstance().getNormalFee().getDefaultPerKB().longValue() / 1000L;
    long hi = FeeUtil.getInstance().getHighFee().getDefaultPerKB().longValue() / 1000L;
    if (lo == mi && mi == hi) {
        SuggestedFee hi_sf = new SuggestedFee();
        hi_sf.setDefaultPerKB(BigInteger.valueOf((long) (hi * 1.15 * 1000.0)));
        FeeUtil.getInstance().setSuggestedFee(hi_sf);
    } else if (lo == mi) {
        FeeUtil.getInstance().setSuggestedFee(FeeUtil.getInstance().getHighFee());
    } else {
        FeeUtil.getInstance().setSuggestedFee(FeeUtil.getInstance().getNormalFee());
    }
    if (selectedUTXO.size() == 0) {
        // sort in descending order by value
        Collections.sort(_utxos, new UTXO.UTXOComparator());
        int selected = 0;
        // get largest UTXOs > than spend + fee + dust
        for (UTXO u : _utxos) {
            selectedUTXO.add(u);
            totalValueSelected += u.getValue();
            selected += u.getOutpoints().size();
            if (totalValueSelected >= (amount + SamouraiWallet.bDust.longValue() + FeeUtil.getInstance().estimatedFee(selected, 4).longValue())) {
                Log.d("PayNymDetailsActivity", "multiple outputs");
                Log.d("PayNymDetailsActivity", "total value selected:" + totalValueSelected);
                Log.d("PayNymDetailsActivity", "nb inputs:" + u.getOutpoints().size());
                break;
            }
        }
        // fee = FeeUtil.getInstance().estimatedFee(selected, 4);
        fee = FeeUtil.getInstance().estimatedFee(selected, 7);
    } else {
        // fee = FeeUtil.getInstance().estimatedFee(1, 4);
        fee = FeeUtil.getInstance().estimatedFee(1, 7);
    }
    // 
    // reset fee to previous setting
    // 
    FeeUtil.getInstance().setSuggestedFee(suggestedFee);
    // 
    if ((amount + fee.longValue()) >= balance) {
        String message = getText(R.string.bip47_notif_tx_insufficient_funds_1) + " ";
        BigInteger biAmount = SendNotifTxFactory._bSWFee.add(SendNotifTxFactory._bNotifTxValue.add(FeeUtil.getInstance().estimatedFee(1, 4, FeeUtil.getInstance().getLowFee().getDefaultPerKB())));
        String strAmount = MonetaryUtil.getInstance().getBTCFormat().format(((double) biAmount.longValue()) / 1e8) + " BTC ";
        message += strAmount;
        message += " " + getText(R.string.bip47_notif_tx_insufficient_funds_2);
        AlertDialog.Builder dlg = new AlertDialog.Builder(PayNymDetailsActivity.this).setTitle(R.string.app_name).setMessage(message).setCancelable(false).setPositiveButton(R.string.help, new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int whichButton) {
                Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("https://support.samourai.io/article/58-connecting-to-a-paynym-contact"));
                startActivity(browserIntent);
            }
        }).setNegativeButton(R.string.close, new DialogInterface.OnClickListener() {

            public void onClick(DialogInterface dialog, int whichButton) {
                dialog.dismiss();
            }
        });
        if (!isFinishing()) {
            dlg.show();
        }
        return;
    }
    // 
    // payment code to be notified
    // 
    PaymentCode payment_code;
    try {
        payment_code = new PaymentCode(pcode);
    } catch (AddressFormatException afe) {
        payment_code = null;
    }
    if (payment_code == null) {
        return;
    }
    // 
    // create outpoints for spend later
    // 
    final List<MyTransactionOutPoint> outpoints = new ArrayList<MyTransactionOutPoint>();
    for (UTXO u : selectedUTXO) {
        outpoints.addAll(u.getOutpoints());
    }
    // 
    // create inputs from outpoints
    // 
    List<MyTransactionInput> inputs = new ArrayList<MyTransactionInput>();
    for (MyTransactionOutPoint o : outpoints) {
        Script script = new Script(o.getScriptBytes());
        if (script.getScriptType() == Script.ScriptType.NO_TYPE) {
            continue;
        }
        MyTransactionInput input = new MyTransactionInput(SamouraiWallet.getInstance().getCurrentNetworkParams(), null, new byte[0], o, o.getTxHash().toString(), o.getTxOutputN());
        inputs.add(input);
    }
    // 
    // sort inputs
    // 
    Collections.sort(inputs, new SendFactory.BIP69InputComparator());
    // 
    // find outpoint that corresponds to 0th input
    // 
    MyTransactionOutPoint outPoint = null;
    for (MyTransactionOutPoint o : outpoints) {
        if (o.getTxHash().toString().equals(inputs.get(0).getTxHash()) && o.getTxOutputN() == inputs.get(0).getTxPos()) {
            outPoint = o;
            break;
        }
    }
    if (outPoint == null) {
        Toast.makeText(PayNymDetailsActivity.this, R.string.bip47_cannot_identify_outpoint, Toast.LENGTH_SHORT).show();
        return;
    }
    byte[] op_return = null;
    // 
    try {
        // Script inputScript = new Script(outPoint.getConnectedPubKeyScript());
        byte[] scriptBytes = outPoint.getConnectedPubKeyScript();
        String address = null;
        if (Bech32Util.getInstance().isBech32Script(Hex.toHexString(scriptBytes))) {
            address = Bech32Util.getInstance().getAddressFromScript(Hex.toHexString(scriptBytes));
        } else {
            address = new Script(scriptBytes).getToAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
        }
        // String address = inputScript.getToAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
        ECKey ecKey = SendFactory.getPrivKey(address, 0);
        if (ecKey == null || !ecKey.hasPrivKey()) {
            Toast.makeText(PayNymDetailsActivity.this, R.string.bip47_cannot_compose_notif_tx, Toast.LENGTH_SHORT).show();
            return;
        }
        // 
        // use outpoint for payload masking
        // 
        byte[] privkey = ecKey.getPrivKeyBytes();
        byte[] pubkey = payment_code.notificationAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).getPubKey();
        byte[] outpoint = outPoint.bitcoinSerialize();
        // Log.i("PayNymDetailsActivity", "outpoint:" + Hex.toHexString(outpoint));
        // Log.i("PayNymDetailsActivity", "payer shared secret:" + Hex.toHexString(new SecretPoint(privkey, pubkey).ECDHSecretAsBytes()));
        byte[] mask = PaymentCode.getMask(new SecretPoint(privkey, pubkey).ECDHSecretAsBytes(), outpoint);
        // Log.i("PayNymDetailsActivity", "mask:" + Hex.toHexString(mask));
        // Log.i("PayNymDetailsActivity", "mask length:" + mask.length);
        // Log.i("PayNymDetailsActivity", "payload0:" + Hex.toHexString(BIP47Util.getInstance(context).getPaymentCode().getPayload()));
        op_return = PaymentCode.blind(BIP47Util.getInstance(PayNymDetailsActivity.this).getPaymentCode().getPayload(), mask);
    // Log.i("PayNymDetailsActivity", "payload1:" + Hex.toHexString(op_return));
    } catch (InvalidKeyException ike) {
        Toast.makeText(PayNymDetailsActivity.this, ike.getMessage(), Toast.LENGTH_SHORT).show();
        return;
    } catch (InvalidKeySpecException ikse) {
        Toast.makeText(PayNymDetailsActivity.this, ikse.getMessage(), Toast.LENGTH_SHORT).show();
        return;
    } catch (NoSuchAlgorithmException nsae) {
        Toast.makeText(PayNymDetailsActivity.this, nsae.getMessage(), Toast.LENGTH_SHORT).show();
        return;
    } catch (NoSuchProviderException nspe) {
        Toast.makeText(PayNymDetailsActivity.this, nspe.getMessage(), Toast.LENGTH_SHORT).show();
        return;
    } catch (Exception e) {
        Toast.makeText(PayNymDetailsActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
        return;
    }
    final HashMap<String, BigInteger> receivers = new HashMap<String, BigInteger>();
    receivers.put(Hex.toHexString(op_return), BigInteger.ZERO);
    receivers.put(payment_code.notificationAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).getAddressString(), SendNotifTxFactory._bNotifTxValue);
    receivers.put(SamouraiWallet.getInstance().isTestNet() ? SendNotifTxFactory.TESTNET_SAMOURAI_NOTIF_TX_FEE_ADDRESS : SendNotifTxFactory.SAMOURAI_NOTIF_TX_FEE_ADDRESS, SendNotifTxFactory._bSWFee);
    final long change = totalValueSelected - (amount + fee.longValue());
    if (change > 0L) {
        String change_address = BIP84Util.getInstance(PayNymDetailsActivity.this).getAddressAt(AddressFactory.CHANGE_CHAIN, BIP84Util.getInstance(PayNymDetailsActivity.this).getWallet().getAccount(0).getChange().getAddrIdx()).getBech32AsString();
        receivers.put(change_address, BigInteger.valueOf(change));
    }
    Log.d("PayNymDetailsActivity", "outpoints:" + outpoints.size());
    Log.d("PayNymDetailsActivity", "totalValueSelected:" + BigInteger.valueOf(totalValueSelected).toString());
    Log.d("PayNymDetailsActivity", "amount:" + BigInteger.valueOf(amount).toString());
    Log.d("PayNymDetailsActivity", "change:" + BigInteger.valueOf(change).toString());
    Log.d("PayNymDetailsActivity", "fee:" + fee.toString());
    if (change < 0L) {
        Toast.makeText(PayNymDetailsActivity.this, R.string.bip47_cannot_compose_notif_tx, Toast.LENGTH_SHORT).show();
        return;
    }
    final MyTransactionOutPoint _outPoint = outPoint;
    String strNotifTxMsg = getText(R.string.bip47_setup4_text1) + " ";
    long notifAmount = amount;
    String strAmount = MonetaryUtil.getInstance().getBTCFormat().format(((double) notifAmount + fee.longValue()) / 1e8) + " BTC ";
    strNotifTxMsg += strAmount + getText(R.string.bip47_setup4_text2);
    showFollowAlert(strAmount, view -> {
        new Thread(new Runnable() {

            @Override
            public void run() {
                Looper.prepare();
                Transaction tx = SendFactory.getInstance(PayNymDetailsActivity.this).makeTransaction(0, outpoints, receivers);
                if (tx != null) {
                    String input0hash = tx.getInput(0L).getOutpoint().getHash().toString();
                    Log.d("PayNymDetailsActivity", "input0 hash:" + input0hash);
                    Log.d("PayNymDetailsActivity", "_outPoint hash:" + _outPoint.getTxHash().toString());
                    int input0index = (int) tx.getInput(0L).getOutpoint().getIndex();
                    Log.d("PayNymDetailsActivity", "input0 index:" + input0index);
                    Log.d("PayNymDetailsActivity", "_outPoint index:" + _outPoint.getTxOutputN());
                    if (!input0hash.equals(_outPoint.getTxHash().toString()) || input0index != _outPoint.getTxOutputN()) {
                        Toast.makeText(PayNymDetailsActivity.this, R.string.bip47_cannot_compose_notif_tx, Toast.LENGTH_SHORT).show();
                        return;
                    }
                    tx = SendFactory.getInstance(PayNymDetailsActivity.this).signTransaction(tx, 0);
                    final String hexTx = new String(org.bouncycastle.util.encoders.Hex.encode(tx.bitcoinSerialize()));
                    Log.d("SendActivity", tx.getHashAsString());
                    Log.d("SendActivity", hexTx);
                    boolean isOK = false;
                    String response = null;
                    try {
                        response = PushTx.getInstance(PayNymDetailsActivity.this).samourai(hexTx);
                        Log.d("SendActivity", "pushTx:" + response);
                        if (response != null) {
                            org.json.JSONObject jsonObject = new org.json.JSONObject(response);
                            if (jsonObject.has("status")) {
                                if (jsonObject.getString("status").equals("ok")) {
                                    isOK = true;
                                }
                            }
                        } else {
                            Toast.makeText(PayNymDetailsActivity.this, R.string.pushtx_returns_null, Toast.LENGTH_SHORT).show();
                            return;
                        }
                        if (isOK) {
                            Toast.makeText(PayNymDetailsActivity.this, R.string.payment_channel_init, Toast.LENGTH_SHORT).show();
                            // 
                            // set outgoing index for payment code to 0
                            // 
                            BIP47Meta.getInstance().setOutgoingIdx(pcode, 0);
                            // Log.i("SendNotifTxFactory", "tx hash:" + tx.getHashAsString());
                            // 
                            // status to NO_CFM
                            // 
                            BIP47Meta.getInstance().setOutgoingStatus(pcode, tx.getHashAsString(), BIP47Meta.STATUS_SENT_NO_CFM);
                            // 
                            if (change > 0L) {
                                BIP49Util.getInstance(PayNymDetailsActivity.this).getWallet().getAccount(0).getChange().incAddrIdx();
                            }
                            savePayLoad();
                        } else {
                            Toast.makeText(PayNymDetailsActivity.this, R.string.tx_failed, Toast.LENGTH_SHORT).show();
                        }
                        runOnUiThread(() -> {
                            setPayNym();
                        });
                    } catch (JSONException je) {
                        Toast.makeText(PayNymDetailsActivity.this, "pushTx:" + je.getMessage(), Toast.LENGTH_SHORT).show();
                        return;
                    } catch (MnemonicException.MnemonicLengthException mle) {
                        Toast.makeText(PayNymDetailsActivity.this, "pushTx:" + mle.getMessage(), Toast.LENGTH_SHORT).show();
                        return;
                    } catch (DecoderException de) {
                        Toast.makeText(PayNymDetailsActivity.this, "pushTx:" + de.getMessage(), Toast.LENGTH_SHORT).show();
                        return;
                    } catch (IOException ioe) {
                        Toast.makeText(PayNymDetailsActivity.this, "pushTx:" + ioe.getMessage(), Toast.LENGTH_SHORT).show();
                        return;
                    } catch (DecryptionException de) {
                        Toast.makeText(PayNymDetailsActivity.this, "pushTx:" + de.getMessage(), Toast.LENGTH_SHORT).show();
                        return;
                    }
                }
                Looper.loop();
            }
        }).start();
    });
}