Examples with UTXO com.samourai.wallet.send.UTXO used on opensource projects

Example 1 with UTXO

use of com.samourai.wallet.send.UTXO in project samourai-wallet-android by Samourai-Wallet.

the class BIP47Activity method doNotifTx.

private void doNotifTx(final String pcode) {
    // 
    // get wallet balance
    // 
    long balance = 0L;
    try {
        balance = APIFactory.getInstance(BIP47Activity.this).getXpubAmounts().get(HD_WalletFactory.getInstance(BIP47Activity.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();
    // 
    // calc btc fee from USD Samourai fee
    // 
    double btc_fx = ExchangeRateFactory.getInstance(BIP47Activity.this).getBitfinexPrice("USD");
    BigInteger currentSWFee = BigInteger.valueOf((long) ((btc_fx / SendNotifTxFactory._dSWFeeUSD) * 1e8));
    if (currentSWFee.longValue() < SendNotifTxFactory._bSWFee.longValue() || currentSWFee.longValue() > SendNotifTxFactory._bSWCeilingFee.longValue()) {
        currentSWFee = SendNotifTxFactory._bSWFee;
    }
    // 
    // add Samourai Wallet fee to total amount
    // 
    amount += currentSWFee.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().getP2SH_P2WPKH().values());
    } else {
        utxos = APIFactory.getInstance(BIP47Activity.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("BIP47Activity", "single output");
            Log.d("BIP47Activity", "value selected:" + u.getValue());
            Log.d("BIP47Activity", "total value selected:" + totalValueSelected);
            Log.d("BIP47Activity", "nb inputs:" + u.getOutpoints().size());
            break;
        }
    }
    // 
    // use low fee settings
    // 
    SuggestedFee suggestedFee = FeeUtil.getInstance().getSuggestedFee();
    FeeUtil.getInstance().setSuggestedFee(FeeUtil.getInstance().getLowFee());
    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("BIP47Activity", "multiple outputs");
                Log.d("BIP47Activity", "total value selected:" + totalValueSelected);
                Log.d("BIP47Activity", "nb inputs:" + u.getOutpoints().size());
                break;
            }
        }
        fee = FeeUtil.getInstance().estimatedFee(selected, 4);
    } else {
        fee = FeeUtil.getInstance().estimatedFee(1, 4);
    }
    // 
    // 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(BIP47Activity.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(BIP47Activity.this, R.string.bip47_cannot_identify_outpoint, Toast.LENGTH_SHORT).show();
        return;
    }
    byte[] op_return = null;
    // 
    try {
        Script inputScript = new Script(outPoint.getConnectedPubKeyScript());
        String address = inputScript.getToAddress(SamouraiWallet.getInstance().getCurrentNetworkParams()).toString();
        ECKey ecKey = SendFactory.getPrivKey(address);
        if (ecKey == null || !ecKey.hasPrivKey()) {
            Toast.makeText(BIP47Activity.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().getPubKey();
        byte[] outpoint = outPoint.bitcoinSerialize();
        // Log.i("BIP47Activity", "outpoint:" + Hex.toHexString(outpoint));
        // Log.i("BIP47Activity", "payer shared secret:" + Hex.toHexString(new SecretPoint(privkey, pubkey).ECDHSecretAsBytes()));
        byte[] mask = PaymentCode.getMask(new SecretPoint(privkey, pubkey).ECDHSecretAsBytes(), outpoint);
        // Log.i("BIP47Activity", "mask:" + Hex.toHexString(mask));
        // Log.i("BIP47Activity", "mask length:" + mask.length);
        // Log.i("BIP47Activity", "payload0:" + Hex.toHexString(BIP47Util.getInstance(context).getPaymentCode().getPayload()));
        op_return = PaymentCode.blind(BIP47Util.getInstance(BIP47Activity.this).getPaymentCode().getPayload(), mask);
    // Log.i("BIP47Activity", "payload1:" + Hex.toHexString(op_return));
    } catch (InvalidKeyException ike) {
        Toast.makeText(BIP47Activity.this, ike.getMessage(), Toast.LENGTH_SHORT).show();
        return;
    } catch (InvalidKeySpecException ikse) {
        Toast.makeText(BIP47Activity.this, ikse.getMessage(), Toast.LENGTH_SHORT).show();
        return;
    } catch (NoSuchAlgorithmException nsae) {
        Toast.makeText(BIP47Activity.this, nsae.getMessage(), Toast.LENGTH_SHORT).show();
        return;
    } catch (NoSuchProviderException nspe) {
        Toast.makeText(BIP47Activity.this, nspe.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().getAddressString(), SendNotifTxFactory._bNotifTxValue);
    receivers.put(SamouraiWallet.getInstance().isTestNet() ? SendNotifTxFactory.TESTNET_SAMOURAI_NOTIF_TX_FEE_ADDRESS : SendNotifTxFactory.SAMOURAI_NOTIF_TX_FEE_ADDRESS, currentSWFee);
    final long change = totalValueSelected - (amount + fee.longValue());
    if (change > 0L) {
        String change_address = BIP49Util.getInstance(BIP47Activity.this).getAddressAt(AddressFactory.CHANGE_CHAIN, BIP49Util.getInstance(BIP47Activity.this).getWallet().getAccount(0).getChange().getAddrIdx()).getAddressAsString();
        receivers.put(change_address, BigInteger.valueOf(change));
    }
    Log.d("BIP47Activity", "outpoints:" + outpoints.size());
    Log.d("BIP47Activity", "totalValueSelected:" + BigInteger.valueOf(totalValueSelected).toString());
    Log.d("BIP47Activity", "amount:" + BigInteger.valueOf(amount).toString());
    Log.d("BIP47Activity", "change:" + BigInteger.valueOf(change).toString());
    Log.d("BIP47Activity", "fee:" + fee.toString());
    if (change < 0L) {
        Toast.makeText(BIP47Activity.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);
    AlertDialog.Builder dlg = new AlertDialog.Builder(BIP47Activity.this).setTitle(R.string.bip47_setup4_title).setMessage(strNotifTxMsg).setPositiveButton(R.string.confirm, new DialogInterface.OnClickListener() {

        public void onClick(DialogInterface dialog, int whichButton) {
            new Thread(new Runnable() {

                @Override
                public void run() {
                    Looper.prepare();
                    Transaction tx = SendFactory.getInstance(BIP47Activity.this).makeTransaction(0, outpoints, receivers);
                    if (tx != null) {
                        String input0hash = tx.getInput(0L).getOutpoint().getHash().toString();
                        Log.d("BIP47Activity", "input0 hash:" + input0hash);
                        Log.d("BIP47Activity", "_outPoint hash:" + _outPoint.getTxHash().toString());
                        int input0index = (int) tx.getInput(0L).getOutpoint().getIndex();
                        Log.d("BIP47Activity", "input0 index:" + input0index);
                        Log.d("BIP47Activity", "_outPoint index:" + _outPoint.getTxOutputN());
                        if (!input0hash.equals(_outPoint.getTxHash().toString()) || input0index != _outPoint.getTxOutputN()) {
                            Toast.makeText(BIP47Activity.this, R.string.bip47_cannot_compose_notif_tx, Toast.LENGTH_SHORT).show();
                            return;
                        }
                        tx = SendFactory.getInstance(BIP47Activity.this).signTransaction(tx);
                        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(BIP47Activity.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(BIP47Activity.this, R.string.pushtx_returns_null, Toast.LENGTH_SHORT).show();
                                return;
                            }
                            if (isOK) {
                                Toast.makeText(BIP47Activity.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(BIP47Activity.this).getWallet().getAccount(0).getChange().incAddrIdx();
                                }
                                PayloadUtil.getInstance(BIP47Activity.this).saveWalletToJSON(new CharSequenceX(AccessFactory.getInstance(BIP47Activity.this).getGUID() + AccessFactory.getInstance(BIP47Activity.this).getPIN()));
                            } else {
                                Toast.makeText(BIP47Activity.this, R.string.tx_failed, Toast.LENGTH_SHORT).show();
                            }
                        } catch (JSONException je) {
                            Toast.makeText(BIP47Activity.this, "pushTx:" + je.getMessage(), Toast.LENGTH_SHORT).show();
                            return;
                        } catch (MnemonicException.MnemonicLengthException mle) {
                            Toast.makeText(BIP47Activity.this, "pushTx:" + mle.getMessage(), Toast.LENGTH_SHORT).show();
                            return;
                        } catch (DecoderException de) {
                            Toast.makeText(BIP47Activity.this, "pushTx:" + de.getMessage(), Toast.LENGTH_SHORT).show();
                            return;
                        } catch (IOException ioe) {
                            Toast.makeText(BIP47Activity.this, "pushTx:" + ioe.getMessage(), Toast.LENGTH_SHORT).show();
                            return;
                        } catch (DecryptionException de) {
                            Toast.makeText(BIP47Activity.this, "pushTx:" + de.getMessage(), Toast.LENGTH_SHORT).show();
                            return;
                        }
                    }
                    Looper.loop();
                }
            }).start();
        }
    }).setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {

        public void onClick(DialogInterface dialog, int whichButton) {
            ;
        }
    });
    dlg.show();
}

Example 2 with UTXO

use of com.samourai.wallet.send.UTXO in project samourai-wallet-android by Samourai-Wallet.

the class BatchSendActivity method markUTXOAsUnspendable.

private void markUTXOAsUnspendable(String hexTx) {
    HashMap<String, Long> utxos = new HashMap<String, Long>();
    for (UTXO utxo : APIFactory.getInstance(BatchSendActivity.this).getUtxos(true)) {
        for (MyTransactionOutPoint outpoint : utxo.getOutpoints()) {
            utxos.put(outpoint.getTxHash().toString() + "-" + outpoint.getTxOutputN(), outpoint.getValue().longValue());
        }
    }
    Transaction tx = new Transaction(SamouraiWallet.getInstance().getCurrentNetworkParams(), Hex.decode(hexTx));
    for (TransactionInput input : tx.getInputs()) {
        BlockedUTXO.getInstance().add(input.getOutpoint().getHash().toString(), (int) input.getOutpoint().getIndex(), utxos.get(input.getOutpoint().getHash().toString() + "-" + (int) input.getOutpoint().getIndex()));
    }
}

Example 3 with UTXO

use of com.samourai.wallet.send.UTXO in project samourai-wallet-android by Samourai-Wallet.

the class ChooseUTXOsFragment method getUTXOs.

private Observable<List<UTXOCoin>> getUTXOs() {
    return Observable.fromCallable(() -> {
        Map<String, Object> dataSet = new HashMap<>();
        List<UTXO> utxos = new ArrayList<>();
        List<UTXO> account0 = APIFactory.getInstance(getActivity()).getUtxos(true);
        // List<UTXO> accountWhirlpool = APIFactory.getInstance(getActivity()).getUtxosPostMix(false);
        utxos.addAll(account0);
        // utxos.addAll(accountWhirlpool);
        long amount = 0L;
        for (UTXO utxo : utxos) {
            for (MyTransactionOutPoint out : utxo.getOutpoints()) {
                debug(TAG, "utxo:" + out.getAddress() + "," + out.getValue());
                debug(TAG, "utxo:" + utxo.getPath());
                amount += out.getValue().longValue();
            }
        }
        ArrayList<UTXOCoin> items = new ArrayList<>();
        for (UTXO utxo : utxos) {
            for (MyTransactionOutPoint outpoint : utxo.getOutpoints()) {
                UTXOCoin displayData = new UTXOCoin(outpoint, utxo);
                if (account0.contains(utxo)) {
                    displayData.account = 0;
                } else {
                    displayData.account = WhirlpoolMeta.getInstance(getActivity()).getWhirlpoolPostmix();
                }
                items.add(displayData);
            }
        }
        return items;
    });
}

Example 4 with UTXO

use of com.samourai.wallet.send.UTXO in project samourai-wallet-android by Samourai-Wallet.

the class RicochetMeta method getHop0UTXO.

private Pair<List<UTXO>, BigInteger> getHop0UTXO(long spendAmount, int nbHops, long feePerHop, boolean samouraiFeeViaBIP47) {
    List<UTXO> utxos = APIFactory.getInstance(context).getUtxos(true);
    final List<UTXO> selectedUTXO = new ArrayList<UTXO>();
    long totalValueSelected = 0L;
    long totalSpendAmount = 0L;
    int selected = 0;
    // sort in ascending order by value
    Collections.sort(utxos, new UTXO.UTXOComparator());
    Collections.reverse(utxos);
    for (UTXO u : utxos) {
        selectedUTXO.add(u);
        totalValueSelected += u.getValue();
        selected += u.getOutpoints().size();
        if (samouraiFeeViaBIP47) {
            totalSpendAmount = spendAmount + samouraiFeeAmountV2.longValue() + (feePerHop * nbHops) + SamouraiWallet.bDust.longValue() + FeeUtil.getInstance().estimatedFee(selected, 3).longValue();
        } else {
            totalSpendAmount = spendAmount + samouraiFeeAmountV1.longValue() + (feePerHop * nbHops) + SamouraiWallet.bDust.longValue() + FeeUtil.getInstance().estimatedFee(selected, 3).longValue();
        }
        // Log.d("RicochetMeta", "totalValueSelected:" + totalValueSelected);
        if (totalValueSelected >= totalSpendAmount) {
            // Log.d("RicochetMeta", "breaking");
            break;
        }
    }
    if (selectedUTXO.size() < 1) {
        return Pair.of(null, null);
    } else {
        return Pair.of(selectedUTXO, FeeUtil.getInstance().estimatedFee(selected, 3));
    }
}

Example 5 with UTXO

use of com.samourai.wallet.send.UTXO 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();
    }
}