<?php
require "../vendor/autoload.php";
use BitWasp\Buffertools\Buffer;
use BitWasp\Bitcoin\Key\PrivateKeyFactory;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Transaction\OutPoint;
use BitWasp\Bitcoin\Transaction\TransactionFactory;
use BitWasp\Bitcoin\Script\WitnessProgram;
use BitWasp\Bitcoin\Bitcoin;
$wif = 'QP3p9tRpTGTefG4a8jKoktSWC7Um8qzvt8wGKMxwWyW3KTNxMxN7';
$s = \BitWasp\Bitcoin\Network\NetworkFactory::bitcoinSegnet();
Bitcoin::setNetwork($s);
$ec = \BitWasp\Bitcoin\Bitcoin::getEcAdapter();
$key = PrivateKeyFactory::fromWif($wif);
echo $key->getPublicKey()->getAddress()->getAddress() . PHP_EOL;
$outpoint = new OutPoint(Buffer::hex('703f50920bff10e1622117af81b622d8bbd625460e61909cc3f8b8ee78a59c0d', 32), 0);
$scriptPubKey = ScriptFactory::scriptPubKey()->payToPubKeyHash($key->getPublicKey());
$value = 100000000;
$txOut = new \BitWasp\Bitcoin\Transaction\TransactionOutput($value, $scriptPubKey);
$destination = new WitnessProgram(0, $key->getPubKeyHash());
$p2sh = new \BitWasp\Bitcoin\Script\P2shScript($destination->getScript());
$tx = TransactionFactory::build()->spendOutPoint($outpoint)->output(95590000, $p2sh->getOutputScript())->get();
$signed = new \BitWasp\Bitcoin\Transaction\Factory\Signer($tx, $ec);
$signed->sign(0, $key, $txOut);
$ss = $signed->get();
echo $ss->getHex() . PHP_EOL;
<?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";
