protected function addressFromScriptHex($script_hex)
{
$address = null;
try {
$script = ScriptFactory::fromHex($script_hex);
$classifier = new InputClassifier($script);
if ($classifier->isPayToPublicKeyHash()) {
$decoded = $script->getScriptParser()->decode();
$public_key = PublicKeyFactory::fromHex($decoded[1]->getData());
$address = $public_key->getAddress()->getAddress();
} else {
if ($classifier->isPayToScriptHash()) {
$decoded = $script->getScriptParser()->decode();
$hex_buffer = $decoded[count($decoded) - 1]->getData();
$sh_address = new ScriptHashAddress(ScriptFactory::fromHex($hex_buffer)->getScriptHash());
$address = $sh_address->getAddress();
} else {
// unknown script type
Log::debug("Unable to classify script " . substr($hex, 0, 20) . "...");
}
}
} catch (Exception $e) {
Log::error("failed to get address from script. " . $e->getMessage());
}
return $address;
}
protected function generateComposedTransactionModel($request_id, PaymentAddress $payment_address, $destination, $float_quantity, $asset, $float_fee, $float_btc_dust_size, $is_sweep)
{
// check to see if this signed transaction already exists in the database
$composed_transaction_model = $this->composed_transaction_repository->getComposedTransactionByRequestID($request_id);
if ($composed_transaction_model === null) {
// build the signed transactions
$change_address_collection = null;
$built_transaction_to_send = $this->buildSignedTransactionToSend($payment_address, $destination, $float_quantity, $asset, $change_address_collection, $float_fee, $float_btc_dust_size, $is_sweep);
// get the utxo identifiers
$utxo_identifiers = $this->buildUTXOIdentifiersFromUTXOs($built_transaction_to_send->getInputUtxos());
// store the signed transactions to the database cache
$signed_transaction_hex = $built_transaction_to_send->getTransactionHex();
$txid = $built_transaction_to_send->getTxId();
$composed_transaction_model = $this->composed_transaction_repository->storeOrFetchComposedTransaction($request_id, $txid, $signed_transaction_hex, $utxo_identifiers);
// mark each UTXO as spent
$this->txo_repository->updateByTXOIdentifiers($utxo_identifiers, ['spent' => 1]);
// create the new UTXOs that belong to any of our addresses
$account = AccountHandler::getAccount($payment_address);
$this->clearPaymentAddressInfoCache();
foreach ($built_transaction_to_send->getOutputUtxos() as $output_utxo) {
if ($output_utxo['amount'] <= 0) {
// don't store OP_RETURN UTXOs with no value
continue;
}
// create new UTXO
$utxo_destination_address = AddressFactory::fromOutputScript(ScriptFactory::fromHex($output_utxo['script']))->getAddress();
list($found_payment_address, $found_account) = $this->loadPaymentAddressInfo($utxo_destination_address);
if ($found_payment_address) {
$this->txo_repository->create($found_payment_address, $found_account, ['txid' => $output_utxo['txid'], 'n' => $output_utxo['n'], 'amount' => $output_utxo['amount'], 'script' => $output_utxo['script'], 'type' => TXO::UNCONFIRMED, 'spent' => 0, 'green' => 1]);
}
}
}
return $composed_transaction_model;
}
<?php require_once "../vendor/autoload.php"; use BitWasp\Bitcoin\Script\ScriptFactory; $script = ScriptFactory::fromHex($argv[1]); print_r($script->getScriptParser()->getHumanReadable());
protected function addInputsAndReturnPreviousOutputs($utxos, $tx_builder)
{
$prev_transaction_outputs = [];
foreach ($utxos as $utxo) {
$script_instance = ScriptFactory::fromHex($utxo['script']);
$tx_builder->input($utxo['txid'], $utxo['n'], $script_instance);
$prev_transaction_output = new TransactionOutput($utxo['amount'] / self::SATOSHI, $script_instance);
$prev_transaction_outputs[] = $prev_transaction_output;
}
return $prev_transaction_outputs;
}
<?php
require "../vendor/autoload.php";
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Bitcoin\Transaction\TransactionFactory;
$ecAdapter = Bitcoin::getEcAdapter();
$math = $ecAdapter->getMath();
$privHex1 = '421c76d77563afa1914846b010bd164f395bd34c2102e5e99e0cb9cf173c1d87';
$privHex2 = 'f7225388c1d69d57e6251c9fda50cbbf9e05131e5adb81e5aa0422402f048162';
$redeemScriptHex = '52410443f3ce7c4ddf438900a6662420511ea48321f8cedd3e63943700b07ac9752a6bf18230095730b18f2d3c3dbdc0a892ca62b1722730f183d370963d6f4d3e20c84104f260c8b554e9d0921c507fb231d0e226ba17462078825c56170facb6567dcec700750bd529f4361da21f59fbfc7d0bce319fdef4e7c524e82d3e313e92b1b34752ae';
$txid = '4141414141414141414141414141414141414141414141414141414141414141';
$vout = 0;
$amount = '161662670';
$fee = '12345';
$amountAfterFee = $math->sub($amount, $fee);
// Two users independently create private keys.
$pk1 = \BitWasp\Bitcoin\Key\PrivateKeyFactory::fromHex($privHex1);
$pk2 = \BitWasp\Bitcoin\Key\PrivateKeyFactory::fromHex($privHex2);
$outpoint = new \BitWasp\Bitcoin\Transaction\OutPoint(\BitWasp\Buffertools\Buffer::hex($txid), $vout);
$redeemScript = new \BitWasp\Bitcoin\Script\P2shScript(\BitWasp\Bitcoin\Script\ScriptFactory::fromHex($redeemScriptHex));
$os = $redeemScript->getOutputScript();
// One party (pk1) wants to spend funds. He creates a transaction spending the funding tx to his address.
$spendTx = TransactionFactory::build()->spendOutPoint($outpoint)->payToAddress($amountAfterFee, $pk1->getAddress())->get();
// Two parties sign the transaction (can be done in steps)
$signer = TransactionFactory::sign($spendTx);
$signer->sign(0, $pk1, $os, $redeemScript)->sign(0, $pk2, $os, $redeemScript);
$signed = $signer->get();
$fundTx = TransactionFactory::build()->input('4d7adb19fff03892a11924f2a9188e36dbbdf0f3bb341b6514475e4df238184b', 0)->output(1000000, $os)->get();
echo $fundTx->getHex() . "\n";
echo $fundTx->getTxId()->getHex() . "\n";
echo "Fully signed transaction: " . $signed->getHex() . "\n";
