Bitcoin P2SH.LOCKTIME

A script level locktime mechanism aims to restrict spending of bitcoin until condition reach future time or block height. Today, it is commonly applied in Hash Time-Locked Contracts (HTLC).

CLTV and CSV are script level timelocks, unlike nLocktime and nSequence which are transaction and input level timelocks. CLTV or CSV are specified in the output locking script, and when spending those outputs, the user must set the nLocktime or the nSequence value to satisfy the locking condition.

P2SH.CheckLockTimeVerify (CLTV)

Absolute Locktime.
Described in BIP 65.

Script Pair of CLTV

ScriptPubKey	: <expiry time> OP_CHECKLOCKTIMEVERIFY OP_DROP OP_DUP OP_HASH160 <pubKeyHash> OP_EQUALVERIFY OP_CHECKSIG
ScriptSig	: <Signature> <PublicKey>

P2SH.CheckSequenceVerify (CSV)

Relative Locktime.

Script Pair of CSV

ScriptPubKey	: <expiry time> OP_CHECKSEQUENCEVERIFY OP_DROP OP_DUP OP_HASH160 <pubKeyHash> OP_EQUALVERIFY OP_CHECKSIG
ScriptSig	: <Signature> <PublicKey>

P2SH.LOCKTIME Address

CLTV
Visual Coding
CSV
Visual Coding

<?php 
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Bitcoin\Address\ScriptHashAddress;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Script\Opcodes;
use BitWasp\Bitcoin\Key\Factory\PublicKeyFactory;
use BitWasp\Bitcoin\Network\NetworkFactory;
use BitWasp\Buffertools\Buffer;
use BitWasp\Bitcoin\Locktime;

include_once "../libraries/vendor/autoload.php";

$placeholder['locktypevalue']['default'] = 'Please choose either Datetime or block height.';
$placeholder['locktypevalue']['timestamp'] = 'Accept only format YYYY-MM-DD HH:MM:SS.';
$placeholder['locktypevalue']['blockheight'] = 'Block height must be integer.';

include_once("html_iframe_header.php");
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
	try {
		
		$lockTimeObject = new Locktime();
		$networkClass   = $_POST['network'];
		Bitcoin::setNetwork(NetworkFactory::$networkClass());
		$publicKeyFactory = new PublicKeyFactory();
		
		if ($_POST['lock_type'] == 'timestamp') {
			$lockTypeValue = strtotime($_POST['lock_type_value']);
		} else if($_POST['lock_type'] == 'blockheight') {
			$lockTypeValue = (int)$_POST['lock_type_value'];
		} else {
			throw new Exception('Please choose either Datetime or block height.');
		}
		
		$lockTimeInt = (Buffer::int($lockTypeValue));
		$locktimev   = $lockTimeInt->flip()->getHex();
		
		$publicKey = $publicKeyFactory->fromHex($_POST['public_key']);
		
		$redeemScript = ScriptFactory::sequence([Buffer::hex($locktimev), Opcodes::OP_CHECKLOCKTIMEVERIFY,Opcodes::OP_DROP, Opcodes::OP_DUP, Opcodes::OP_HASH160, $publicKey->getPubKeyHash(), Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]);
		
		
		$p2sh = new ScriptHashAddress($redeemScript->getScriptHash());
	
	?>
		<div class="table-responsive">
			<table border=0 class='table'>
				<tr style='background-color:#f0f0f0'><td>Base58 address</td><td><?php echo $p2sh->getAddress();?></td></tr>
				<tr><td>Redeem Script Hex </td><td><?php echo $redeemScript->getHex();?></td></tr>
				<tr><td>Redeem Script Asm</td>
					<td>
						<?php 
						$opcodes = $redeemScript->getOpcodes();
						foreach( $redeemScript->getScriptParser()->decode() as $operation ) {
							try {
								$op = $opcodes->getOp($operation->getOp());
							} catch (\RuntimeException $e) {
								$op = "";
							}
							
							echo $op ? $op . " " : "";
							
							if ($op != 'OP_0' AND $operation->isPush()) {
								$bytes = (int)ltrim($op, 'OP_PUSHDATA');
								$bytes = $bytes > 0 ? $bytes : 1;
								
								$hexsize = Buffer::int($operation->getDataSize(), $bytes)->getHex();
								echo htmlentities("{$hexsize}<{$operation->getData()->getHex()}> ");
							} 
						}
						?>
					</td>
				</tr>
				
				<tr style='background-color:#f0f0f0'><td>Lock Type</td><td>Absolute <?php echo $lockTimeObject->isLockedToBlock($lockTypeValue) ? "Block Height" : "Datetime"  ?></td></tr>
				
				
				
				<tr><td>ScriptPubKey Hex </td><td><?php echo $p2sh->getScriptPubKey()->getHex()?></td></tr>
				<tr><td>ScriptPubKey Asm</td>
					<td>
						<?php 
						
						$opcodes = $redeemScript->getOpcodes();
						
						foreach( $p2sh->getScriptPubKey()->getScriptParser()->decode() as $operation ) {
							try {
								$op = $opcodes->getOp($operation->getOp());
							} catch (\RuntimeException $e) {
								$op = "";
							}
							
							echo $op ? $op . " " : "";
							
							if ($op != 'OP_0' AND $operation->isPush()) {
								$bytes = (int)ltrim($op, 'OP_PUSHDATA');
								$bytes = $bytes > 0 ? $bytes : 1;
								
								$hexsize = Buffer::int($operation->getDataSize(), $bytes)->getHex();
								echo htmlentities("{$hexsize}<{$operation->getData()->getHex()}> ");
							} 
						}
						?>
					</td>
				</tr>
			</table>
		</div>
<?php 
	} catch (Exception $e) {
		$errmsg .= "Problem found. " . $e->getMessage();

	}
} 

if ($errmsg) {
?>
	<div class="alert alert-danger">
		<strong>Error!</strong> <?php echo $errmsg?>
	</div>
<?php
}
?>
<form action='' method='post'>
	<div class="form-group">
		<label for="network">Network:</label> <a href="../bitcoin/bitcoin_tool_mtp.php" target="_blank">Check Height & Median Time Past (MTP).</a>
		<select id="network" name="network" class="form-control" >
			<?php
			$networks = get_class_methods(new NetworkFactory());
			foreach($networks as $network) {
				echo "<option value='{$network}'".($network == $_POST['network'] ? " selected": "").">{$network}</option>";
			}
			?>
		</select>
	</div>
	<div class="form-group">
		<label for="public_key">Public Key Hex:</label>
		<input class="form-control" type='text' name='public_key' id='public_key' value='<?php echo $_POST['public_key']?>'>
	</div>
	
	<div class="form-group">
		<label>Lock Type:</label>
		
		<div class="form-check form-check-inline">
			<label class="form-check-label">
				<input type="radio" class="form-check-input" name="lock_type" value="timestamp"<?php echo $_POST['lock_type']=='timestamp' ? ' checked': ''?> onclick="
				var self = $(this);
				var lockTypeValueE = $('#lock_type_value');
				lockTypeValueE.attr('placeholder', '<?php echo $placeholder['locktypevalue']['timestamp']?>');				
				"><span class='explaination' data-toggle='tooltip' title='Tx is spendable when datetime reach Median Time Past (MTP). MTP is just the median of the last 11 blocks.'>Datetime</span>
			</label>
		</div>
		<div class="form-check form-check-inline">
			<label class="form-check-label">
				<input type="radio" class="form-check-input" name="lock_type" value="blockheight"<?php echo $_POST['lock_type']=='blockheight' ? ' checked': ''?> onclick="
				var self = $(this);
				var lockTypeValueE = $('#lock_type_value');
				lockTypeValueE.attr('placeholder', '<?php echo $placeholder['locktypevalue']['blockheight']?>');				
				">Block Height
			</label>
		</div>
		
		<input class="form-control" type='text' name='lock_type_value' id='lock_type_value' value='<?php echo $_POST['lock_type_value']?>' placeholder="<?php echo $placeholder['locktypevalue'][ $_POST['lock_type']?$_POST['lock_type']:'default' ]?>">
	</div>
	<input type='submit' class="btn btn-success btn-block"/>
</form>
<?php
include_once("html_iframe_footer.php");

<?php 
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Bitcoin\Address\ScriptHashAddress;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Script\Opcodes;
use BitWasp\Bitcoin\Key\Factory\PublicKeyFactory;
use BitWasp\Bitcoin\Network\NetworkFactory;
use BitWasp\Buffertools\Buffer;
use BitWasp\Bitcoin\Locktime;
use BitWasp\Bitcoin\Transaction\TransactionInputInterface;

include_once "../libraries/vendor/autoload.php";

$placeholder['locktypevalue']['default'] = 'Please choose either relative time or relative height.';
$placeholder['locktypevalue']['timestamp'] = 'Accept only seconds (integer).';
$placeholder['locktypevalue']['timestamp_extra'] = "Granularity of 512 seconds. Spend is allow once chain\'s MTP >= UTXO\'s block MTP + Relative Time.";
$placeholder['locktypevalue']['blockheight'] = 'Relative height must be integer.';
$placeholder['locktypevalue']['blockheight_extra'] = "";

include_once("html_iframe_header.php");
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
	try {
		
		$lockTimeObject = new Locktime();
		$networkClass   = $_POST['network'];
		Bitcoin::setNetwork(NetworkFactory::$networkClass());
		$publicKeyFactory = new PublicKeyFactory();
		
		if ($_POST['lock_type'] == 'timestamp') {
			$lockTypeValue = (int)$_POST['lock_type_value'];
			
			//enable granularity of 512 seconds
			$lockTypeValue = TransactionInputInterface::SEQUENCE_LOCKTIME_TYPE_FLAG | $lockTypeValue;
		} else if($_POST['lock_type'] == 'blockheight') {
			$lockTypeValue = (int)$_POST['lock_type_value'];
		} else {
			throw new Exception('Please choose either Relative Time or Relative Height.');
		}
		
		$opcodes = new Opcodes();
		
		if ($lockTypeValue >= 1 AND $lockTypeValue <= 16) {
			$opCodeName = "OP_{$lockTypeValue}";
			$locktimev = $opcodes->getOpByName($opCodeName);
			$isRelativeTime = false;
		} else {
			$lockTimeInt = (Buffer::int($lockTypeValue));
			$locktimev = $lockTimeInt->flip();
			$isRelativeTime = ($lockTimeInt->getInt() >> 22 & 0x1);
		}
		
		
		$publicKey = $publicKeyFactory->fromHex($_POST['public_key']);
		
		$redeemScript = ScriptFactory::sequence([$locktimev, Opcodes::OP_CHECKSEQUENCEVERIFY,Opcodes::OP_DROP, Opcodes::OP_DUP, Opcodes::OP_HASH160, $publicKey->getPubKeyHash(), Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]);
		
		
		$p2sh = new ScriptHashAddress($redeemScript->getScriptHash());
	
	?>
		<div class="table-responsive">
			<table border=0 class='table'>
				<tr style='background-color:#f0f0f0'><td>Base58 address</td><td><?php echo $p2sh->getAddress();?></td></tr>
				<tr><td>Redeem Script Hex </td><td><?php echo $redeemScript->getHex();?></td></tr>
				<tr><td>Redeem Script Asm</td>
					<td>
						<?php 
						$opcodes = $redeemScript->getOpcodes();
						foreach( $redeemScript->getScriptParser()->decode() as $operation ) {
							try {
								$op = $opcodes->getOp($operation->getOp());
							} catch (\RuntimeException $e) {
								$op = "";
							}
							
							echo $op ? $op . " " : "";
							
							if ($op != 'OP_0' AND $operation->isPush()) {
								$bytes = (int)ltrim($op, 'OP_PUSHDATA');
								$bytes = $bytes > 0 ? $bytes : 1;
								
								$hexsize = Buffer::int($operation->getDataSize(), $bytes)->getHex();
								echo htmlentities("{$hexsize}<{$operation->getData()->getHex()}> ");
							} 
						}
						?>
					</td>
				</tr>
				
				<tr style='background-color:#f0f0f0'><td>Lock Type</td><td>Relative <?php echo !$isRelativeTime ? "Height" : "Time"  ?></td></tr>
				
				
				
				<tr><td>ScriptPubKey Hex </td><td><?php echo $p2sh->getScriptPubKey()->getHex()?></td></tr>
				<tr><td>ScriptPubKey Asm</td>
					<td>
						<?php 
						
						$opcodes = $redeemScript->getOpcodes();
						
						foreach( $p2sh->getScriptPubKey()->getScriptParser()->decode() as $operation ) {
							try {
								$op = $opcodes->getOp($operation->getOp());
							} catch (\RuntimeException $e) {
								$op = "";
							}
							
							echo $op ? $op . " " : "";
							
							if ($op != 'OP_0' AND $operation->isPush()) {
								$bytes = (int)ltrim($op, 'OP_PUSHDATA');
								$bytes = $bytes > 0 ? $bytes : 1;
								
								$hexsize = Buffer::int($operation->getDataSize(), $bytes)->getHex();
								echo htmlentities("{$hexsize}<{$operation->getData()->getHex()}> ");
							} 
						}
						?>
					</td>
				</tr>
			</table>
		</div>
<?php 
	} catch (Exception $e) {
		$errmsg .= "Problem found. " . $e->getMessage();

	}
} 

if ($errmsg) {
?>
	<div class="alert alert-danger">
		<strong>Error!</strong> <?php echo $errmsg?>
	</div>
<?php
}
?>
<form action='' method='post'>
	<div class="form-group">
		<label for="network">Network:</label> <a href="../bitcoin/bitcoin_tool_mtp.php" target="_blank">Check Height & Median Time Past (MTP).</a>
		<select id="network" name="network" class="form-control" >
			<?php
			$networks = get_class_methods(new NetworkFactory());
			foreach($networks as $network) {
				echo "<option value='{$network}'".($network == $_POST['network'] ? " selected": "").">{$network}</option>";
			}
			?>
		</select>
	</div>
	<div class="form-group">
		<label for="public_key">Public Key Hex:</label>
		<input class="form-control" type='text' name='public_key' id='public_key' value='<?php echo $_POST['public_key']?>'>
	</div>
	
	<div class="form-group">
		<label>Lock Type:</label>
		
		<div class="form-check form-check-inline">
			<label class="form-check-label">
				<input type="radio" class="form-check-input" name="lock_type" value="timestamp"<?php echo $_POST['lock_type']=='timestamp' ? ' checked': ''?> onclick="
				var self = $(this);
				var lockTypeValueE = $('#lock_type_value');
				var lockTypeExtraE = $('#lock_type_extra');
				lockTypeValueE.attr('placeholder', '<?php echo $placeholder['locktypevalue']['timestamp']?>');				
				lockTypeExtraE.html('<?php echo htmlentities($placeholder['locktypevalue']['timestamp_extra'],ENT_QUOTES)?>');	
				">Relative Time
			</label>
		</div>
		<div class="form-check form-check-inline">
			<label class="form-check-label">
				<input type="radio" class="form-check-input" name="lock_type" value="blockheight"<?php echo $_POST['lock_type']=='blockheight' ? ' checked': ''?> onclick="
				var self = $(this);
				var lockTypeValueE = $('#lock_type_value');
				var lockTypeExtraE = $('#lock_type_extra');
				lockTypeValueE.attr('placeholder', '<?php echo $placeholder['locktypevalue']['blockheight']?>');				
				lockTypeExtraE.html('<?php echo $placeholder['locktypevalue']['blockheight_extra']?>');	
				">Relative Height
			</label>
		</div>
		
		<input class="form-control" type='text' name='lock_type_value' id='lock_type_value' value='<?php echo $_POST['lock_type_value']?>' placeholder="<?php echo $placeholder['locktypevalue'][ $_POST['lock_type']?$_POST['lock_type']:'default' ]?>">
		
		<span id='lock_type_extra'></span>
	</div>
	<input type='submit' class="btn btn-success btn-block"/>
</form>
<?php
include_once("html_iframe_footer.php");

Fund & Spend P2SH.LOCKTIME

<?php 
use BitWasp\Bitcoin\Network\NetworkFactory;
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Buffertools\Buffer;
use BitWasp\Bitcoin\Key\Factory\PrivateKeyFactory;
use BitWasp\Bitcoin\Address\AddressCreator;
use BitWasp\Bitcoin\Address\Base58AddressInterface;
use BitWasp\Bitcoin\Transaction\Factory\TxBuilder;
use BitWasp\Bitcoin\Transaction\TransactionFactory;
use BitWasp\Bitcoin\Transaction\TransactionOutput;
use BitWasp\Bitcoin\Transaction\Factory\Signer;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Script\Classifier\OutputClassifier;
use BitWasp\Bitcoin\Script\ScriptType;

include_once "../libraries/vendor/autoload.php";
include_once("html_iframe_header.php");

$noOfInputs = 10;
$noOfOutputs = 10;
$errmsg = '';
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
	try {
		$networkClass   = $_POST['network'];
		Bitcoin::setNetwork(NetworkFactory::$networkClass());
		
		$network        = Bitcoin::getNetwork();
		$ecAdapter      = Bitcoin::getEcAdapter();
		$privKeyFactory = new PrivateKeyFactory();
		
		$addrCreator = new AddressCreator();
		
		$spendTx = TransactionFactory::build();
		
		$signItems = [];
		
		
		if (!is_numeric($_POST['no_of_inputs']) OR !is_numeric($_POST['no_of_outputs'])) {
			throw new Exception("Error in 'no_of_inputs' or 'no_of_outputs'.");
		}
			
		foreach(range(1,$_POST['no_of_inputs']) as $thisInput) {
			$utxoHash = trim($_POST["utxo_hash_{$thisInput}"]);
			$utxoNOutput = trim($_POST["utxo_n_{$thisInput}"]);
			$privkeyhex = trim($_POST["privkey_{$thisInput}"]);
			$utxoScript = trim($_POST["utxo_script_{$thisInput}"]);
			
			if (strlen($utxoHash)>0 AND strlen($utxoNOutput) > 0 AND strlen($privkeyhex) > 0) {
				$spendTx = $spendTx->input($utxoHash, $utxoNOutput);
				$signItems[] = [$privkeyhex, $utxoScript];
			} else {
				throw new Exception("Error in 'input#{$thisInput}'.");
			}
		}
		
		foreach(range(1,$_POST['no_of_outputs']) as $thisOutput) {
			
			$address = trim($_POST["address_{$thisOutput}"]);
			
			$amount = trim($_POST["amount_{$thisOutput}"]);
			$recipient = $addrCreator->fromString($address);
			
			if (!strlen($address) or !strlen($amount)) {
				throw new Exception("Error in 'output#{$thisOutput}'.");
			}
			
			if (!$recipient instanceof Base58AddressInterface) {
				throw new Exception("Invalid P2SH address in 'output#{$thisOutput}' (Check base58Address).");
			} 
			
			$decodeScript = (new OutputClassifier())->decode($recipient->getScriptPubKey());
			
			if (!($decodeScript->getType() == ScriptType::P2SH OR $decodeScript->getType() == ScriptType::P2PKH)) {
				throw new Exception("Invalid P2SH address in 'output#{$thisOutput}' (Check scriptPubKey).");
			}
			
			$spendTx = $spendTx->payToAddress($amount, $recipient);
			
		}
		
		
		$thisTx = $spendTx->get();
		
		$signer = new Signer($thisTx, $ecAdapter);
		
		foreach($signItems as $nIn=>$signItem) {
			$privateKey = $privKeyFactory->fromHexCompressed($signItem[0]);
			
			$scriptPubKey = ScriptFactory::fromHex($signItem[1]);
			
			$txOutput = new TransactionOutput(0, $scriptPubKey );
			$signer = $signer->sign($nIn, $privateKey, $txOutput);
		}
		
	?>
		<div class="alert alert-success">
			<h6 class="mt-3">Final TX Hex</h6>
			
			<textarea class="form-control" rows="5" id="comment" readonly><?php echo $signer->get()->getHex();?></textarea>
		</div>
	<?php
	
	} catch (Exception $e) {
		$errmsg .= "Problem found. " . $e->getMessage();

	}
}

if ($errmsg) {
?>
	<div class="alert alert-danger">
		<strong>Error!</strong> <?php echo $errmsg?>
	</div>
<?php
}
?>
<form action='' method='post'>
	<div class="form-group">
		<label for="network">Network: </label>
		<select name="network" id="network" class="form-control">
			<?php
			$networks = get_class_methods(new NetworkFactory());
			foreach($networks as $network) {
				echo "<option value='{$network}'".($network == $_POST['network'] ? " selected": "").">{$network}</option>";
			}
			?>
		</select>
	</div>
	
	<div class="row">
		<div class="col-sm-6">
			
			<div class="form-row">
				<div class="form-group col">
					<label for="no_of_inputs">Inputs: </label> 
					<select class="form-control" id="no_of_inputs" name='no_of_inputs' style='width:auto;' onchange="
					var self = $(this);
					var thisvalue = self.val();
					var form = self.closest('form');
					$('div[id^=row_input_]',form).hide();
					for(var i=1; i<= thisvalue; i++) { 
						$('div[id=row_input_'+  i + ']',form).show();
					}
					">
						<?php
						foreach(range(1,$noOfInputs) as $thisInput) {
							echo "<option value='{$thisInput}'".($thisInput == $_POST['no_of_inputs'] ? " selected": "").">{$thisInput}</option>";
						}
						?>
					</select>
				</div>
			</div>
			
			<?php
			$selectedNInputs = is_numeric($_POST['no_of_inputs']) ? $_POST['no_of_inputs'] : 1;
			
			foreach(range(1,$noOfInputs) as $thisInput) {
			?>
			
				<div class="form-row" id='row_input_<?php echo $thisInput?>' style="<?php echo ($thisInput > $selectedNInputs) ? "display:none" : "display:;"?>">
				
					<div class="form-group  col-sm-1">
						#<?php echo $thisInput?> 
					</div>
					<div class="form-group  col-sm-3">
						
						<input class="form-control" title="UTXO Tx Hash" placeholder='UTXO Tx Hash' type='text' name='utxo_hash_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_hash_{$thisInput}"]?>'>
					</div>
					<div class="form-group  col-sm-1">
						<input class="form-control" title="UTXO N Output" placeholder='N' type='text' name='utxo_n_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_n_{$thisInput}"]?>'>
					</div>
					
					<div class="form-group  col-sm-3">
						<input class="form-control" title="UTXO ScriptPubKey" placeholder='UTXO ScriptPubKey' type='text' name='utxo_script_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_script_{$thisInput}"]?>'>
					</div>
					<div class="form-group  col-sm-4">
						<input class="form-control" title="Private Key Hex, for signing purpose." placeholder='Private Key Hex' type='text' name='privkey_<?php echo $thisInput?>' value='<?php echo $_POST["privkey_{$thisInput}"]?>'>
					</div>
				</div>
			<?php
			}
			?>
		</div>
		<div class="col-sm-6">
			<div class="form-row">
				<div class="form-group col">
					<label for="no_of_outputs">Outputs:</label> <select class="form-control" id="no_of_outputs" name='no_of_outputs' style='width:auto;' onchange="
					var self = $(this);
					var thisvalue = self.val();
					var form = self.closest('form');
					$('div[id^=row_output_]',form).hide();
					for(var i=1; i<= thisvalue; i++) { 
						$('div[id=row_output_'+  i + ']',form).show();
					}
					">
						<?php
						foreach(range(1,$noOfOutputs) as $thisOutput) {
							echo "<option value='{$thisOutput}'".($thisOutput == $_POST['no_of_outputs'] ? " selected": "").">{$thisOutput}</option>";
						}
						?>
					</select>
				</div>
			</div>
			<?php
			$selectedNOutputs = is_numeric($_POST['no_of_outputs']) ? $_POST['no_of_outputs'] : 1;

			foreach(range(1,$noOfOutputs) as $thisOutput) {
			?>
				<div class="form-row" id='row_output_<?php echo $thisOutput?>' style="<?php echo ($thisOutput > $selectedNOutputs) ? "display:none" : "display:;"?>">
					<div class="form-group col-sm-1">
						#<?php echo $thisOutput?> 
					</div>
					
					<div class="form-group col-sm-6">
						<input class="form-control" placeholder='P2SH Address' type='text' name='address_<?php echo $thisOutput?>' value='<?php echo $_POST["address_{$thisOutput}"]?>'>
					</div>
					<div class="form-group col-sm-5">
						<input class="form-control" placeholder='Amount' type='text' name='amount_<?php echo $thisOutput?>' value='<?php echo $_POST["amount_{$thisOutput}"]?>'>
					</div>
				</div>
	<?php
			}
	?>
		</div>
	</div>
	
	<input type='submit' class="btn btn-success btn-block"/>
</form>
<?php
include_once("html_iframe_footer.php");

<?php 
use BitWasp\Buffertools\Buffer;
use BitWasp\Bitcoin\Network\NetworkFactory;
use BitWasp\Bitcoin\Address\AddressCreator;
use BitWasp\Bitcoin\Address\PayToPubKeyHashAddress;
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Bitcoin\Key\Factory\PrivateKeyFactory;
use BitWasp\Bitcoin\Transaction\Factory\Signer;
use BitWasp\Bitcoin\Transaction\Factory\SignData;
use BitWasp\Bitcoin\Transaction\TransactionFactory;
use BitWasp\Bitcoin\Transaction\TransactionOutput;
use BitWasp\Bitcoin\Script\Classifier\OutputClassifier;
use BitWasp\Bitcoin\Script\ScriptType;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Script\P2shScript;
use BitWasp\Bitcoin\Signature\TransactionSignature;

include_once "../libraries/vendor/autoload.php";

$noOfInputs = 10;
$noOfOutputs = 10;

$placeholder['locktypevalue']['default'] = 'Please choose either Datetime or block height.';
$placeholder['locktypevalue']['timestamp'] = 'Accept only format YYYY-MM-DD HH:MM:SS.';
$placeholder['locktypevalue']['blockheight'] = 'Block height must be integer.';

include_once("html_iframe_header.php");
?>
<div class='vertical-line-yellow'>
	<h6 class="mt-3">To success spend of OP_CLTV, following requirements must meet:</h6>
	
	<ul>
		<li>nLocktime is required</li>
		<li>if nLockTime typed datetime detected, then value must satisfy &lt; chain's MTP.</li>
		<li>if nLockTime typed block height detected, then value must satisfy &lt; chain's block height + 1.</li>	
		<li>if OP_CLTV detected, then its time parameter must satisfy &gt;= nLockTime.</li>
		<li>At least one input's nSequence must set lower than max value #FFFFFFFF to enable nLockTime.</li>
	</ul>
</div>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
	
	try {
		$networkClass   = $_POST['network'];
		Bitcoin::setNetwork(NetworkFactory::$networkClass());
		
		$network        = Bitcoin::getNetwork();
		$ecAdapter      = Bitcoin::getEcAdapter();
		$privKeyFactory = new PrivateKeyFactory();
		
		$addrCreator = new AddressCreator();
		
		$spendTx = TransactionFactory::build();
		
		$signItems = [];
		
		if (!strlen($_POST['utx']) or !ctype_xdigit($_POST['utx'])) {                    
			throw new Exception("UTX must be hex.");
		} 
		
		if (!is_numeric($_POST['no_of_inputs']) OR !is_numeric($_POST['no_of_outputs'])) {
			throw new Exception("Error in 'no_of_inputs' or 'no_of_outputs'.");
		}
		
		$utxHex = $_POST['utx'];
		$utx = TransactionFactory::fromHex($utxHex);    
		$utxos = $utx->getOutputs();
		
		//any input's nSequence set lesser than max value #ffffffff (32-bits) will enable nLockTime field.
		$sequence = 0;
		
		foreach($utxos as $k=>$utxo) {
			$privateKey = $privKeyFactory->fromHexCompressed($_POST["privkey_" . ($k+1)]);
			$utxoScript = $utxo->getScript();
			$redeemScript = trim($_POST["redeemscript_" . ($k+1)]);
			$redeemScript = new P2shScript(ScriptFactory::fromHex($redeemScript));
			
			$p2shScriptPubKey = ScriptFactory::scriptPubKey()->p2sh($redeemScript->getScriptHash()/*sha256*/);
			
			if ($utxoScript->getHex() != $p2shScriptPubKey->getHex()) {
				throw new Exception("Error in 'input#{$k}'. Redeem script is not matched to UTXO's ScriptPubKey.");
			}
			
			$signData = new SignData();
			$signData->p2sh($redeemScript);
			
			$signItems[] = [ $privateKey, $signData ];
			
			$spendTx = $spendTx->spendOutputFrom($utx, $k, null, $sequence);
		}
		
		if ($_POST['lock_type'] == 'timestamp') {
			$nlocktime = strtotime($_POST['nlocktime']);
		} else if($_POST['lock_type'] == 'blockheight') {
			$nlocktime = (int)$_POST['nlocktime'];
		} else {
			throw new Exception('Please choose either Datetime or block height.');
		}
		$spendTx->locktime($nlocktime); //set nlocktime at transaction level

		foreach(range(1,$_POST['no_of_outputs']) as $thisOutput) {
			
			$address = trim($_POST["address_{$thisOutput}"]);
			$amount = trim($_POST["amount_{$thisOutput}"]);
			
			if (strlen($address)>0 AND strlen($amount)>0) {
				$recipient = $addrCreator->fromString($address);
				$spendTx = $spendTx->payToAddress($amount, $recipient);
			} else {
				throw new Exception("Error in 'output#{$thisOutput}'.");
			}
		}
		
		$thisTx = $spendTx->get();
		$finalTx = TransactionFactory::mutate($thisTx);
		$mutable = TransactionFactory::mutate($thisTx);
		$sigHashType = 1; //ALL
		foreach($signItems as $nIn=>$signItem) {
			$privateKey = $signItem[0];
			$signData   = $signItem[1];
			$input = $mutable->inputsMutator()[$nIn];
			$input->script($signData->getRedeemScript());
			$finalSignData = $mutable->done()->getHex() .  bin2hex(pack('V', $sigHashType));
			$finalSignData = hash('sha256', hex2bin(hash('sha256', hex2bin($finalSignData))));
			$txSig = new TransactionSignature($ecAdapter, $privateKey->sign(Buffer::hex($finalSignData)), $sigHashType);
			$derSigHex = $txSig->getSignature()->getBuffer()->getHex() . Buffer::int($sigHashType, 1)->getHex();
			
			$input = $finalTx->inputsMutator()[$nIn];
			
			
			$inputSig = ScriptFactory::sequence(
				[Buffer::hex($derSigHex),
				 Buffer::hex($privateKey->getPublicKey()->getHex()),
				 Buffer::hex($signData->getRedeemScript()->getHex())
				]);
				
			$inputSig = ScriptFactory::create()
							->push(Buffer::hex($derSigHex))
							->push(Buffer::hex($privateKey->getPublicKey()->getHex()))
							->push(Buffer::hex($signData->getRedeemScript()->getHex()));
			
			$input->script($inputSig);
		}
		
	?>
		<div class="alert alert-success">
			<h6 class="mt-3">Final TX Hex</h6>
			
			<textarea class="form-control" rows="5" id="comment" readonly><?php echo $finalTx->done()->getHex();?></textarea>
		</div>
	<?php
	
	} catch (Exception $e) {
		$errmsg .= "Problem found. " . $e->getMessage();

	}
}

if ($errmsg) {
?>
	<div class="alert alert-danger">
		<strong>Error!</strong> <?php echo $errmsg?>
	</div>
<?php
}
?>
<form action='?tab=form2_tabitem3#hashtag2' method='post'>
	<div class="form-group">
		<label for="network">Network: </label>
		<select name="network" id="network" class="form-control">
			<?php
			$networks = get_class_methods(new NetworkFactory());
			foreach($networks as $network) {
				echo "<option value='{$network}'".($network == $_POST['network'] ? " selected": "").">{$network}</option>";
			}
			?>
		</select>
	</div>
	<div class="form-group">
		<label for="utx">Unspent Transaction (Hex):</label>
		
		<div class="input-group mb-3">
			<input class="form-control" type='text' name='utx' id='utx' value='<?php echo $_POST['utx']?>'>
			<div class="input-group-append">
				<input class="btn btn-success" type="button" id="form2_tabitem3_load" value="Load" onclick="
				var self = $(this);
				self.val('......'); 
				
				var form = self.closest('form');
				var allInputDivs = form.find('div[id^=row_input_]');
				var allInputs = $( ':input', allInputDivs );
				allInputs.val('');
				allInputDivs.hide();
				$('select#no_of_inputs',form).empty();
				$('span#total_inputs',form).html('0');
				$.ajax({
					url: '?ajax=1&utx=' + $('input#utx',form).val(), 
					
					error:function() {
						
					},
					
					success:function(result){
						try {
							j = eval('(' + result + ')');
							
							if ('error' in j && j.error.length>0) {
								var error = true;
							} else {
								var error = false;
							}
							
							if (!error) {
								var txHash = j.txHash;
								var outputs = j.outputs;
								var totalInputs = 0;
								
								if (outputs.length > 0) {
									
									
									$('select#no_of_inputs',form).prepend('<option value=\''+outputs.length+'\' selected=\'selected\'>'+outputs.length+'</option>');
									
									var x;    
									for (x in outputs) {
										var divid = parseInt(x) + 1;
										var amount = parseInt(outputs[x].amount);
										totalInputs += amount;
										
										$('div#row_input_' + divid             ,form).show();
										$('input[name=utxo_hash_' + divid+']'  ,form).val(txHash);
										$('input[name=utxo_n_' + divid+']'     ,form).val(outputs[x].n);
										$('input[name=utxo_script_' + divid+']',form).val(outputs[x].scriptPubKey);
										$('input[name=utxo_amount_' + divid+']',form).val(amount);
										$('input[name=privkey_'+divid+']'      ,form).removeAttr('readonly');
									}
								}
								
								$('span#total_inputs',form).html(totalInputs);
							} else {
								alert(j.error);
							}
						} catch(e) {
							alert('Invalid Json Format.');
						}
					},
					complete:function() {
						self.val('Load');
					}
				});
				"/>
			</div>
		</div>
	</div>
	<div class="row">
		<div class="col-sm-6">
			
			<div class="form-row">
				<div class="form-group col">
					<label for="no_of_inputs">Inputs: <i>Max 10 inputs only. Please load them from UTX above.</i></label> 
					
					<div class="row">
						<div class="col-sm-2">
							<select class="form-control" id="no_of_inputs" name='no_of_inputs' style='width:auto;' onchange="
							var self = $(this);
							var thisvalue = self.val();
							var form = self.closest('form');
							$('div[id^=row_input_]',form).hide();
							for(var i=1; i<= thisvalue; i++) { 
								$('div[id=row_input_'+  i + ']',form).show();
							}
							" readonly>
								<?php
								$optionval = $_POST['no_of_inputs']?$_POST['no_of_inputs'] : 0;
								
								if ($optionval > 0) {
								?>
								<option value='<?php echo $optionval?>'><?php echo $optionval?></option>
								<?php
								}
								?>
							</select>
						</div>
						
						<div class="col-sm-10">
							Total Sathoshi: 
							<span id='total_inputs'>
							<?php echo 
							array_reduce(
								array_keys($_POST),
								function($carry, $key) { 
									if (preg_match('/^utxo_amount_/', $key)) {
										return $carry + (int)$_POST[$key];
									} else {                    
										return $carry;
									}
								}, 0
							);?>
							</span>
						</div>
					</div>
				</div>
			</div>
			
			<?php
			$selectedNInputs = is_numeric($_POST['no_of_inputs']) ? $_POST['no_of_inputs'] : 0;
			
			foreach(range(1,$noOfInputs) as $thisInput) {
			?>
			
				<div class="form-row" id='row_input_<?php echo $thisInput?>' style="<?php echo ($thisInput > $selectedNInputs) ? "display:none" : "display:;"?>">
					<input type='hidden' name='utxo_amount_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_amount_{$thisInput}"]?>'/>
					
					<div class="form-group  col-sm-1">
						#<?php echo $thisInput?> 
					</div>
					<div class="form-group  col-sm-3">    
						<input class="form-control" title="UTXO Tx Hash" placeholder='UTXO Tx Hash' type='text' name='utxo_hash_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_hash_{$thisInput}"]?>' readonly>
					</div>
					<div class="form-group  col-sm-1">
						<input class="form-control" title="UTXO N Output" placeholder='N' type='text' name='utxo_n_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_n_{$thisInput}"]?>' readonly>
					</div>
					<div class="form-group  col-sm-3">
						<input class="form-control" title="UTXO ScriptPubKey" placeholder='UTXO ScriptPubKey' type='text' name='utxo_script_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_script_{$thisInput}"]?>' readonly>
					</div>
					<div class="form-group  col-sm-4">
						<input class="form-control" title="Private Key Hex, for signing purpose." placeholder='Private Key Hex' type='text' name='privkey_<?php echo $thisInput?>' value='<?php echo $_POST["privkey_{$thisInput}"]?>'>
					</div>
					
					<div class="form-group  col-sm-1" >
					
					</div>
					<div class="form-group  col-sm-11">
						<input class="form-control" placeholder='Redeem Script' type='text' name='redeemscript_<?php echo $thisInput?>' value='<?php echo $_POST["redeemscript_{$thisInput}"]?>'>
					</div>
				</div>
			<?php
			}
			?>
		</div>
		<div class="col-sm-6">
			<div class="form-row">
				<div class="form-group col">
					<label for="no_of_outputs">Outputs:</label> <select class="form-control" id="no_of_outputs" name='no_of_outputs' style='width:auto;' onchange="
					var self = $(this);
					var thisvalue = self.val();
					var form = self.closest('form');
					$('div[id^=row_output_]',form).hide();
					for(var i=1; i<= thisvalue; i++) { 
						$('div[id=row_output_'+  i + ']',form).show();
					}
					">
						<?php
						foreach(range(1,$noOfOutputs) as $thisOutput) {
							echo "<option value='{$thisOutput}'".($thisOutput == $_POST['no_of_outputs'] ? " selected": "").">{$thisOutput}</option>";
						}
						?>
					</select>
				</div>
			</div>
			<?php
			$selectedNOutputs = is_numeric($_POST['no_of_outputs']) ? $_POST['no_of_outputs'] : 1;
			
			
			foreach(range(1,$noOfOutputs) as $thisOutput) {
			?>
				<div class="form-row" id='row_output_<?php echo $thisOutput?>' style="<?php echo ($thisOutput > $selectedNOutputs) ? "display:none" : "display:;"?>">
					<div class="form-group col-sm-1">
						#<?php echo $thisOutput?> 
					</div>
					
					<div class="form-group col-sm-6">
						<input class="form-control" placeholder='Any Address' type='text' name='address_<?php echo $thisOutput?>' value='<?php echo $_POST["address_{$thisOutput}"]?>'>
					</div>
					<div class="form-group col-sm-5">
						<input class="form-control" placeholder='Amount' type='text' name='amount_<?php echo $thisOutput?>' value='<?php echo $_POST["amount_{$thisOutput}"]?>'>
					</div>
				</div>
	<?php
			}
	?>
		</div>
	</div>
	
	<div class="form-group">
		<label>nLockTime:</label>
		
		<div class="form-check form-check-inline">
			<label class="form-check-label">
				<input type="radio" class="form-check-input" name="lock_type" value="timestamp"<?php echo $_POST['lock_type']=='timestamp' ? ' checked': ''?> onclick="
				var self = $(this);
				var lockTypeValueE = $('#nlocktime');
				lockTypeValueE.attr('placeholder', '<?php echo $placeholder['locktypevalue']['timestamp']?>');				
				"><span class='explaination' data-toggle='tooltip' title='Tx is spendable when datetime reach Median Time Past (MTP). MTP is just the median of the last 11 blocks.'>Datetime</span>
			</label>
		</div>
		<div class="form-check form-check-inline">
			<label class="form-check-label">
				<input type="radio" class="form-check-input" name="lock_type" value="blockheight"<?php echo $_POST['lock_type']=='blockheight' ? ' checked': ''?> onclick="
				var self = $(this);
				var lockTypeValueE = $('#nlocktime');
				lockTypeValueE.attr('placeholder', '<?php echo $placeholder['locktypevalue']['blockheight']?>');				
				">Block Height
			</label>
		</div>
		
		<input class="form-control" type='text' name='nlocktime' id='nlocktime' value='<?php echo $_POST['nlocktime']?>' placeholder="<?php echo $placeholder['locktypevalue'][ $_POST['lock_type']?$_POST['lock_type']:'default' ]?>">
		
		<a href="../bitcoin/bitcoin_tool_mtp.php" target="_blank">To spend immediately, you just got to fill in current chain's HEIGHT or MTP.</a>
	</div>
	
	<input type='submit' class="btn btn-success btn-block"/>
</form>
<?php
include_once("html_iframe_footer.php");

<?php 
use BitWasp\Bitcoin\Network\NetworkFactory;
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Buffertools\Buffer;
use BitWasp\Bitcoin\Key\Factory\PrivateKeyFactory;
use BitWasp\Bitcoin\Address\AddressCreator;
use BitWasp\Bitcoin\Address\Base58AddressInterface;
use BitWasp\Bitcoin\Transaction\Factory\TxBuilder;
use BitWasp\Bitcoin\Transaction\TransactionFactory;
use BitWasp\Bitcoin\Transaction\TransactionOutput;
use BitWasp\Bitcoin\Transaction\Factory\Signer;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Script\Classifier\OutputClassifier;
use BitWasp\Bitcoin\Script\ScriptType;

include_once "../libraries/vendor/autoload.php";
include_once("html_iframe_header.php");

$noOfInputs = 10;
$noOfOutputs = 10;

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
	try {
		$networkClass   = $_POST['network'];
		Bitcoin::setNetwork(NetworkFactory::$networkClass());
		
		$network        = Bitcoin::getNetwork();
		$ecAdapter      = Bitcoin::getEcAdapter();
		$privKeyFactory = new PrivateKeyFactory();
		
		$addrCreator = new AddressCreator();
		
		$spendTx = TransactionFactory::build();
		
		$signItems = [];
		
		
		if (!is_numeric($_POST['no_of_inputs']) OR !is_numeric($_POST['no_of_outputs'])) {
			throw new Exception("Error in 'no_of_inputs' or 'no_of_outputs'.");
		}
			
		foreach(range(1,$_POST['no_of_inputs']) as $thisInput) {
			$utxoHash = trim($_POST["utxo_hash_{$thisInput}"]);
			$utxoNOutput = trim($_POST["utxo_n_{$thisInput}"]);
			$privkeyhex = trim($_POST["privkey_{$thisInput}"]);
			$utxoScript = trim($_POST["utxo_script_{$thisInput}"]);
			
			if (strlen($utxoHash)>0 AND strlen($utxoNOutput) > 0 AND strlen($privkeyhex) > 0) {
				$spendTx = $spendTx->input($utxoHash, $utxoNOutput);
				$signItems[] = [$privkeyhex, $utxoScript];
			} else {
				throw new Exception("Error in 'input#{$thisInput}'.");
			}
		}
		
		foreach(range(1,$_POST['no_of_outputs']) as $thisOutput) {
			
			$address = trim($_POST["address_{$thisOutput}"]);
			
			$amount = trim($_POST["amount_{$thisOutput}"]);
			$recipient = $addrCreator->fromString($address);
			
			if (!strlen($address) or !strlen($amount)) {
				throw new Exception("Error in 'output#{$thisOutput}'.");
			}
			
			if (!$recipient instanceof Base58AddressInterface) {
				throw new Exception("Invalid P2SH address in 'output#{$thisOutput}' (Check base58Address).");
			} 
			
			$decodeScript = (new OutputClassifier())->decode($recipient->getScriptPubKey());
			
			if (!($decodeScript->getType() == ScriptType::P2SH OR $decodeScript->getType() == ScriptType::P2PKH)) {
				throw new Exception("Invalid P2SH address in 'output#{$thisOutput}' (Check scriptPubKey).");
			}
			
			$spendTx = $spendTx->payToAddress($amount, $recipient);
			
		}
		
		
		$thisTx = $spendTx->get();
		
		$signer = new Signer($thisTx, $ecAdapter);
		
		foreach($signItems as $nIn=>$signItem) {
			$privateKey = $privKeyFactory->fromHexCompressed($signItem[0]);
			
			$scriptPubKey = ScriptFactory::fromHex($signItem[1]);
			
			$txOutput = new TransactionOutput(0, $scriptPubKey );
			$signer = $signer->sign($nIn, $privateKey, $txOutput);
		}
		
	?>
		<div class="alert alert-success">
			<h6 class="mt-3">Final TX Hex</h6>
			
			<textarea class="form-control" rows="5" id="comment" readonly><?php echo $signer->get()->getHex();?></textarea>
		</div>
	<?php
	
	} catch (Exception $e) {
		$errmsg .= "Problem found. " . $e->getMessage();

	}
}

if ($errmsg) {
?>
	<div class="alert alert-danger">
		<strong>Error!</strong> <?php echo $errmsg?>
	</div>
<?php
}
?>
<form action='' method='post'>
	<div class="form-group">
		<label for="network">Network: </label>
		<select name="network" id="network" class="form-control">
			<?php
			$networks = get_class_methods(new NetworkFactory());
			foreach($networks as $network) {
				echo "<option value='{$network}'".($network == $_POST['network'] ? " selected": "").">{$network}</option>";
			}
			?>
		</select>
	</div>
	
	<div class="row">
		<div class="col-sm-6">
			
			<div class="form-row">
				<div class="form-group col">
					<label for="no_of_inputs">Inputs: </label> 
					<select class="form-control" id="no_of_inputs" name='no_of_inputs' style='width:auto;' onchange="
					var self = $(this);
					var thisvalue = self.val();
					var form = self.closest('form');
					$('div[id^=row_input_]',form).hide();
					for(var i=1; i<= thisvalue; i++) { 
						$('div[id=row_input_'+  i + ']',form).show();
					}
					">
						<?php
						foreach(range(1,$noOfInputs) as $thisInput) {
							echo "<option value='{$thisInput}'".($thisInput == $_POST['no_of_inputs'] ? " selected": "").">{$thisInput}</option>";
						}
						?>
					</select>
				</div>
			</div>
			
			<?php
			$selectedNInputs = is_numeric($_POST['no_of_inputs']) ? $_POST['no_of_inputs'] : 1;
			
			foreach(range(1,$noOfInputs) as $thisInput) {
			?>
			
				<div class="form-row" id='row_input_<?php echo $thisInput?>' style="<?php echo ($thisInput > $selectedNInputs) ? "display:none" : "display:;"?>">
				
					<div class="form-group  col-sm-1">
						#<?php echo $thisInput?> 
					</div>
					<div class="form-group  col-sm-3">
						
						<input class="form-control" title="UTXO Tx Hash" placeholder='UTXO Tx Hash' type='text' name='utxo_hash_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_hash_{$thisInput}"]?>'>
					</div>
					<div class="form-group  col-sm-1">
						<input class="form-control" title="UTXO N Output" placeholder='N' type='text' name='utxo_n_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_n_{$thisInput}"]?>'>
					</div>
					
					<div class="form-group  col-sm-3">
						<input class="form-control" title="UTXO ScriptPubKey" placeholder='UTXO ScriptPubKey' type='text' name='utxo_script_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_script_{$thisInput}"]?>'>
					</div>
					<div class="form-group  col-sm-4">
						<input class="form-control" title="Private Key Hex, for signing purpose." placeholder='Private Key Hex' type='text' name='privkey_<?php echo $thisInput?>' value='<?php echo $_POST["privkey_{$thisInput}"]?>'>
					</div>
				</div>
			<?php
			}
			?>
		</div>
		<div class="col-sm-6">
			<div class="form-row">
				<div class="form-group col">
					<label for="no_of_outputs">Outputs:</label> <select class="form-control" id="no_of_outputs" name='no_of_outputs' style='width:auto;' onchange="
					var self = $(this);
					var thisvalue = self.val();
					var form = self.closest('form');
					$('div[id^=row_output_]',form).hide();
					for(var i=1; i<= thisvalue; i++) { 
						$('div[id=row_output_'+  i + ']',form).show();
					}
					">
						<?php
						foreach(range(1,$noOfOutputs) as $thisOutput) {
							echo "<option value='{$thisOutput}'".($thisOutput == $_POST['no_of_outputs'] ? " selected": "").">{$thisOutput}</option>";
						}
						?>
					</select>
				</div>
			</div>
			<?php
			$selectedNOutputs = is_numeric($_POST['no_of_outputs']) ? $_POST['no_of_outputs'] : 1;
			
			
			foreach(range(1,$noOfOutputs) as $thisOutput) {
			?>
				<div class="form-row" id='row_output_<?php echo $thisOutput?>' style="<?php echo ($thisOutput > $selectedNOutputs) ? "display:none" : "display:;"?>">
					<div class="form-group col-sm-1">
						#<?php echo $thisOutput?> 
					</div>
					
					<div class="form-group col-sm-6">
						<input class="form-control" placeholder='P2SH Address' type='text' name='address_<?php echo $thisOutput?>' value='<?php echo $_POST["address_{$thisOutput}"]?>'>
					</div>
					<div class="form-group col-sm-5">
						<input class="form-control" placeholder='Amount' type='text' name='amount_<?php echo $thisOutput?>' value='<?php echo $_POST["amount_{$thisOutput}"]?>'>
					</div>
				</div>
	<?php
			}
	?>
		</div>
	</div>
	
	<input type='submit' class="btn btn-success btn-block"/>
</form>
<?php
include_once("html_iframe_footer.php");

<?php 
use BitWasp\Buffertools\Buffer;
use BitWasp\Bitcoin\Network\NetworkFactory;
use BitWasp\Bitcoin\Address\AddressCreator;
use BitWasp\Bitcoin\Address\PayToPubKeyHashAddress;
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Bitcoin\Key\Factory\PrivateKeyFactory;
use BitWasp\Bitcoin\Transaction\Factory\Signer;
use BitWasp\Bitcoin\Transaction\Factory\SignData;
use BitWasp\Bitcoin\Transaction\TransactionFactory;
use BitWasp\Bitcoin\Transaction\TransactionOutput;
use BitWasp\Bitcoin\Script\Classifier\OutputClassifier;
use BitWasp\Bitcoin\Script\ScriptType;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Script\P2shScript;
use BitWasp\Bitcoin\Signature\TransactionSignature;

include_once "../libraries/vendor/autoload.php";
$noOfInputs = 10;
$noOfOutputs = 10;

if ($_SERVER['REQUEST_METHOD'] == 'GET' AND $_GET['ajax'] == '1') {
	$data = [];
	if (!ctype_xdigit($_GET['utx'])) {
		$data = ["error"=>"UTX must be hex."];
	} else {
		$utxHex = $_GET['utx'];
		$utx = TransactionFactory::fromHex($utxHex);
		$outputs = $utx->getOutputs();
		
		$data['txHash'] = $utx->getTxHash()->flip()->getHex();//swap endianess
		$data['outputs'] = [];
		if (@count($outputs)) {
			foreach($outputs as $k=>$output) {
				if ($k < 10) { //limit to retrieve max 10 inputs only
				
					$decodeScript = (new OutputClassifier())->decode($output->getScript());
						
					if ($decodeScript->getType() != ScriptType::P2SH) {
						$data = ["error"=>"Load fail! Your unspent transaction output (utxo) can only contain P2SH ScriptPubKey."];
						break;
					}
					$data['outputs'][] = ["amount"=>$output->getValue(), "n"=>$k, "scriptPubKey"=>$output->getScript()->getHex()];
				}
			}
		}
	}
	
	die(json_encode($data));
}

include_once("html_iframe_header.php");
?>
<div class='vertical-line-yellow'>
	<h6 class="mt-3">To success spend of OP_CSV, following requirements must meet:</h6>
	
	<ul>
		<li>Transaction must be version 2.</li>
		<li>If relative lock-time flag detected in input's nSequence, then UTXO's block MTP must satisfy &lt;  chain's MTP.</li>	
		<li>if block height detected in input's nSequence, then UTXO's block height must satisfy &lt; chain's block height + 1.</li>
		<li>&lt;expiry time&gt; in redeem script must &lt;= nSequence.</li>
	</ul>
</div>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
	
	try {
		$networkClass   = $_POST['network'];
		Bitcoin::setNetwork(NetworkFactory::$networkClass());
		
		$network        = Bitcoin::getNetwork();
		$ecAdapter      = Bitcoin::getEcAdapter();
		$privKeyFactory = new PrivateKeyFactory();
		
		$addrCreator = new AddressCreator();
		
		$spendTx = TransactionFactory::build();
		$spendTx->version(2);//important
		$signItems = [];
		
		if (!strlen($_POST['utx']) or !ctype_xdigit($_POST['utx'])) {                    
			throw new Exception("UTX must be hex.");
		} 
		
		if (!is_numeric($_POST['no_of_inputs']) OR !is_numeric($_POST['no_of_outputs'])) {
			throw new Exception("Error in 'no_of_inputs' or 'no_of_outputs'.");
		}
		
		$utxHex = $_POST['utx'];
		$utx = TransactionFactory::fromHex($utxHex);    
		$utxos = $utx->getOutputs();	
		
		foreach($utxos as $k=>$utxo) {
			$privateKey = $privKeyFactory->fromHexCompressed($_POST["privkey_" . ($k+1)]);
			$utxoScript = $utxo->getScript();
			$redeemScript = trim($_POST["redeemscript_" . ($k+1)]);
			$redeemScript = new P2shScript(ScriptFactory::fromHex($redeemScript));
			
			$timeParam = $redeemScript->getScriptParser()->getHumanReadable();
			$timeParam = strstr($timeParam, ' ', true);
			
			if (preg_match('/^OP_/', $timeParam)) {
				$timeParam = ltrim($timeParam, 'OP_');
				$timeParam = (int)$timeParam;
				$sequence = $timeParam;
			} else {
				$sequence = Buffer::hex($timeParam)->flip()->getInt();
			}
			
			$p2shScriptPubKey = ScriptFactory::scriptPubKey()->p2sh($redeemScript->getScriptHash()/*sha256*/);
			
			if ($utxoScript->getHex() != $p2shScriptPubKey->getHex()) {
				throw new Exception("Error in 'input#{$k}'. Redeem script is not matched to UTXO's ScriptPubKey.");
			}
			
			$signData = new SignData();
			$signData->p2sh($redeemScript);
			
			$signItems[] = [ $privateKey, $signData ];
			$spendTx = $spendTx->spendOutputFrom($utx, $k, null, $sequence);
		}
		
		foreach(range(1,$_POST['no_of_outputs']) as $thisOutput) {
			
			$address = trim($_POST["address_{$thisOutput}"]);
			$amount = trim($_POST["amount_{$thisOutput}"]);
			
			if (strlen($address)>0 AND strlen($amount)>0) {
				$recipient = $addrCreator->fromString($address);
				$spendTx = $spendTx->payToAddress($amount, $recipient);
			} else {
				throw new Exception("Error in 'output#{$thisOutput}'.");
			}
		}
		
		$thisTx = $spendTx->get();
		$finalTx = TransactionFactory::mutate($thisTx);
		$mutable = TransactionFactory::mutate($thisTx);
		$sigHashType = 1; //ALL
		foreach($signItems as $nIn=>$signItem) {
			$privateKey = $signItem[0];
			$signData   = $signItem[1];
			$input = $mutable->inputsMutator()[$nIn];
			$input->script($signData->getRedeemScript());
			$finalSignData = $mutable->done()->getHex() .  bin2hex(pack('V', $sigHashType));
			$finalSignData = hash('sha256', hex2bin(hash('sha256', hex2bin($finalSignData))));
			$txSig = new TransactionSignature($ecAdapter, $privateKey->sign(Buffer::hex($finalSignData)), $sigHashType);
			$derSigHex = $txSig->getSignature()->getBuffer()->getHex() . Buffer::int($sigHashType, 1)->getHex();
			
			$input = $finalTx->inputsMutator()[$nIn];
			$inputSig = ScriptFactory::sequence(
				[Buffer::hex($derSigHex),
				 Buffer::hex($privateKey->getPublicKey()->getHex()),
				 Buffer::hex($signData->getRedeemScript()->getHex())
				]);
			$input->script($inputSig);
		}
		
	?>
		<div class="alert alert-success">
			<h6 class="mt-3">Final TX Hex</h6>
			
			<textarea class="form-control" rows="5" id="comment" readonly><?php echo $finalTx->done()->getHex();?></textarea>
		</div>
	<?php
	
	} catch (Exception $e) {
		$errmsg .= "Problem found. " . $e->getMessage();

	}
}

if ($errmsg) {
?>
	<div class="alert alert-danger">
		<strong>Error!</strong> <?php echo $errmsg?>
	</div>
<?php
}
?>
<form action='?tab=form2_tabitem3#hashtag2' method='post'>
	<div class="form-group">
		<label for="network">Network: </label>
		<select name="network" id="network" class="form-control">
			<?php
			$networks = get_class_methods(new NetworkFactory());
			foreach($networks as $network) {
				echo "<option value='{$network}'".($network == $_POST['network'] ? " selected": "").">{$network}</option>";
			}
			?>
		</select>
	</div>
	<div class="form-group">
		<label for="utx">Unspent Transaction (Hex):</label>
		
		<div class="input-group mb-3">
			<input class="form-control" type='text' name='utx' id='utx' value='<?php echo $_POST['utx']?>'>
			<div class="input-group-append">
				<input class="btn btn-success" type="button" id="form2_tabitem3_load" value="Load" onclick="
				var self = $(this);
				self.val('......'); 
				
				var form = self.closest('form');
				var allInputDivs = form.find('div[id^=row_input_]');
				var allInputs = $( ':input', allInputDivs );
				allInputs.val('');
				allInputDivs.hide();
				$('select#no_of_inputs',form).empty();
				$('span#total_inputs',form).html('0');
				$.ajax({
					url: '?ajax=1&utx=' + $('input#utx',form).val(), 
					
					error:function() {
						
					},
					
					success:function(result){
						try {
							j = eval('(' + result + ')');
							
							if ('error' in j && j.error.length>0) {
								var error = true;
							} else {
								var error = false;
							}
							
							if (!error) {
								var txHash = j.txHash;
								var outputs = j.outputs;
								var totalInputs = 0;
								
								if (outputs.length > 0) {
									
									
									$('select#no_of_inputs',form).prepend('<option value=\''+outputs.length+'\' selected=\'selected\'>'+outputs.length+'</option>');
									
									var x;    
									for (x in outputs) {
										var divid = parseInt(x) + 1;
										var amount = parseInt(outputs[x].amount);
										totalInputs += amount;
										
										$('div#row_input_' + divid             ,form).show();
										$('input[name=utxo_hash_' + divid+']'  ,form).val(txHash);
										$('input[name=utxo_n_' + divid+']'     ,form).val(outputs[x].n);
										$('input[name=utxo_script_' + divid+']',form).val(outputs[x].scriptPubKey);
										$('input[name=utxo_amount_' + divid+']',form).val(amount);
										$('input[name=privkey_'+divid+']'      ,form).removeAttr('readonly');
									}
								}
								
								$('span#total_inputs',form).html(totalInputs);
							} else {
								alert(j.error);
							}
						} catch(e) {
							alert('Invalid Json Format.');
						}
					},
					complete:function() {
						self.val('Load');
					}
				});
				"/>
			</div>
		</div>
	</div>
	<div class="row">
		<div class="col-sm-6">
			
			<div class="form-row">
				<div class="form-group col">
					<label for="no_of_inputs">Inputs: <i>Max 10 inputs only. Please load them from UTX above.</i></label> 
					
					<div class="row">
						<div class="col-sm-2">
							<select class="form-control" id="no_of_inputs" name='no_of_inputs' style='width:auto;' onchange="
							var self = $(this);
							var thisvalue = self.val();
							var form = self.closest('form');
							$('div[id^=row_input_]',form).hide();
							for(var i=1; i<= thisvalue; i++) { 
								$('div[id=row_input_'+  i + ']',form).show();
							}
							" readonly>
								<?php
								$optionval = $_POST['no_of_inputs']?$_POST['no_of_inputs'] : 0;
								
								if ($optionval > 0) {
								?>
								<option value='<?php echo $optionval?>'><?php echo $optionval?></option>
								<?php
								}
								?>
							</select>
						</div>
						
						<div class="col-sm-10">
							Total Sathoshi: 
							<span id='total_inputs'>
							<?php echo 
							array_reduce(
								array_keys($_POST),
								function($carry, $key)  { 
									if (preg_match('/^utxo_amount_/', $key)) {
										return $carry + (int)$_POST[$key];
									} else {                    
										return $carry;
									}
								}, 0
							);?>
							</span>
						</div>
					</div>
				</div>
			</div>
			
			<?php
			$selectedNInputs = is_numeric($_POST['no_of_inputs']) ? $_POST['no_of_inputs'] : 0;
			
			foreach(range(1,$noOfInputs) as $thisInput) {
			?>
			
				<div class="form-row" id='row_input_<?php echo $thisInput?>' style="<?php echo ($thisInput > $selectedNInputs) ? "display:none" : "display:;"?>">
					<input type='hidden' name='utxo_amount_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_amount_{$thisInput}"]?>'/>
					
					<div class="form-group  col-sm-1">
						#<?php echo $thisInput?> 
					</div>
					<div class="form-group  col-sm-3">    
						<input class="form-control" title="UTXO Tx Hash" placeholder='UTXO Tx Hash' type='text' name='utxo_hash_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_hash_{$thisInput}"]?>' readonly>
					</div>
					<div class="form-group  col-sm-1">
						<input class="form-control" title="UTXO N Output" placeholder='N' type='text' name='utxo_n_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_n_{$thisInput}"]?>' readonly>
					</div>
					<div class="form-group  col-sm-3">
						<input class="form-control" title="UTXO ScriptPubKey" placeholder='UTXO ScriptPubKey' type='text' name='utxo_script_<?php echo $thisInput?>' value='<?php echo $_POST["utxo_script_{$thisInput}"]?>' readonly>
					</div>
					<div class="form-group  col-sm-4">
						<input class="form-control" title="Private Key Hex, for signing purpose." placeholder='Private Key Hex' type='text' name='privkey_<?php echo $thisInput?>' value='<?php echo $_POST["privkey_{$thisInput}"]?>'>
					</div>
					
					<div class="form-group  col-sm-1" >
					
					</div>
					<div class="form-group  col-sm-11">
						<input class="form-control" placeholder='Redeem Script' type='text' name='redeemscript_<?php echo $thisInput?>' value='<?php echo $_POST["redeemscript_{$thisInput}"]?>'>
					</div>
				</div>
			<?php
			}
			?>
		</div>
		<div class="col-sm-6">
			<div class="form-row">
				<div class="form-group col">
					<label for="no_of_outputs">Outputs:</label> <select class="form-control" id="no_of_outputs" name='no_of_outputs' style='width:auto;' onchange="
					var self = $(this);
					var thisvalue = self.val();
					var form = self.closest('form');
					$('div[id^=row_output_]',form).hide();
					for(var i=1; i<= thisvalue; i++) { 
						$('div[id=row_output_'+  i + ']',form).show();
					}
					">
						<?php
						foreach(range(1,$noOfOutputs) as $thisOutput) {
							echo "<option value='{$thisOutput}'".($thisOutput == $_POST['no_of_outputs'] ? " selected": "").">{$thisOutput}</option>";
						}
						?>
					</select>
				</div>
			</div>
			<?php
			$selectedNOutputs = is_numeric($_POST['no_of_outputs']) ? $_POST['no_of_outputs'] : 1;
			
			
			foreach(range(1,$noOfOutputs) as $thisOutput) {
			?>
				<div class="form-row" id='row_output_<?php echo $thisOutput?>' style="<?php echo ($thisOutput > $selectedNOutputs) ? "display:none" : "display:;"?>">
					<div class="form-group col-sm-1">
						#<?php echo $thisOutput?> 
					</div>
					
					<div class="form-group col-sm-6">
						<input class="form-control" placeholder='Any Address' type='text' name='address_<?php echo $thisOutput?>' value='<?php echo $_POST["address_{$thisOutput}"]?>'>
					</div>
					<div class="form-group col-sm-5">
						<input class="form-control" placeholder='Amount' type='text' name='amount_<?php echo $thisOutput?>' value='<?php echo $_POST["amount_{$thisOutput}"]?>'>
					</div>
				</div>
	<?php
			}
	?>
		</div>
	</div>
	
	<input type='submit' class="btn btn-success btn-block"/>
</form>
<!-- The Modal -->
<div class="modal" id="myModal" data-backdrop="false">
	<div class="modal-dialog">
		<div class="modal-content">

			<!-- Modal Header -->
			<div class="modal-header">
				<h4 class="modal-title"><span id='network_display'></span>: Height & MTP</h4>
				<button type="button" class="close" data-dismiss="modal">&times;</button>
			</div>

			<!-- Modal body -->
			<div class="modal-body">
		
			</div>
		</div>
	</div>
</div>
<?php
include_once("html_iframe_footer.php");

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