Bitcoin Intro
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Bitcoin P2SH.P2WPKH
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Bitcoin's Blockchain
Blockhain is type of distributed database that store number of blocks to form a chain.
- Distributed database.
- Consists number of blocks, each block stores number of data.
- Blocks linked up each other by hash.
Bitcoin-CLI Find Blockchain Stats
<?php
include_once "../common.php"; //include this just to derive $_BITCOINCLI_CONFIG[...] variable
$supportCoins = ['btc/main'=>"Bitcoin Mainnet"];
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
try {
$postFields = [
'jsonrpc' => '1.0',
'id'=>'curltest',
'method'=>'getblockchaininfo',
'params'=> []
];
$bitcoincliRpcProtocol = "http";
$bitcoincliRpcHost = $_BITCOINCLI_CONFIG['bitcoincli_rpc_host'];
$bitcoincliRpcPort = "8332";
$bitcoincliRpcUser = $_BITCOINCLI_CONFIG['bitcoincli_rpc_user'];
$bitcoincliRpcPwd = $_BITCOINCLI_CONFIG['bitcoincli_rpc_pwd'];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url = "{$bitcoincliRpcProtocol}://{$bitcoincliRpcHost}:{$bitcoincliRpcPort}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_POST , 1);
curl_setopt($ch, CURLOPT_USERPWD , "{$bitcoincliRpcUser}:{$bitcoincliRpcPwd}");
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_POSTFIELDS, $CURLOPT_POSTFIELDS = json_encode($postFields));
$rawResult = curl_exec($ch);
$displayRawResults[] = [$CURLOPT_POSTFIELDS, $rawResult];
if (curl_errno($ch)) {
throw new Exception('CURL Error: ' . curl_error($ch). "#" . curl_errno($ch));
} else if (!($result = json_decode($rawResult,true))) {
throw new Exception('Invalid JSON format.');
} else if (is_array($result['error']) AND $result['error'] !='null') {
throw new Exception('Bitcoin CLI Error: ' . $result['error']['message'] . "#" . $result['error']['code']);
} else {
curl_close($ch);
}
} catch (Exception $e) {
$errmsg .= "Problem found. " . $e->getMessage();
}
}
include_once("html_iframe_header.php");
if ($errmsg) {
?>
<div class="alert alert-danger">
<strong>Error!</strong> <?php echo $errmsg?>
</div>
<?php
}
if (@count($displayRawResults) > 0) {
$json_string = json_encode($result['result'], JSON_PRETTY_PRINT);
?>
<div class="row">
<div class="col-sm-6">
<pre style='border-radius:none;'><?php echo $json_string;?></pre>
</div>
<div class="col-sm-6">
<table border=0 class='table table-bordered'>
<tr>
<th style='width:15%'>Params</th><th style='width:15%'>Data Type</th><th style='width:70%'>Explaination</th>
</tr>
<tr>
<td>chain</td><td>String</td><td>Current network name as defined in BIP70 (main, test, regtest).</td>
</tr>
<tr>
<td>blocks</td><td>Numeric</td><td>The current number of blocks processed in the server.</td>
</tr>
<tr>
<td>headers</td><td>Numeric</td><td>The current number of headers we have validated.</td>
</tr>
<tr>
<td>bestblockhash</td><td>String</td><td>The hash of the currently best block.</td>
</tr>
<tr>
<td>difficulty</td><td>Numeric</td><td>The current difficulty.</td>
</tr>
<tr>
<td>mediantime</td><td>Numeric</td><td>Median time for the current best block.</td>
</tr>
<tr>
<td>verificationprogress</td><td>Numeric</td><td>estimate of verification progress [0 - 1].</td>
</tr>
<tr>
<td>initialblockdownload</td><td>Boolean</td><td>Estimate of whether this node is in Initial Block Download mode. (debug information)</td>
</tr>
<tr>
<td>chainwork</td><td>String</td><td>Total amount of work in active chain, in hexadecimal.</td>
</tr>
<tr>
<td>size_on_disk</td><td>Numeric</td><td>The estimated size of the block and undo files on disk.</td>
</tr>
<tr>
<td>pruned</td><td>Boolean</td><td>If the blocks are subject to pruning.</td>
</tr>
<tr>
<td>pruneheight</td><td>Numeric</td><td>Lowest-height complete block stored (only present if pruning is enabled).</td>
</tr>
<tr>
<td>automatic_pruning</td><td>Boolean</td><td>Whether automatic pruning is enabled (only present if pruning is enabled).</td>
</tr>
<tr>
<td>prune_target_size</td><td>Numeric</td><td>The target size used by pruning (only present if automatic pruning is.</td>
</tr>
<tr>
<td>pruneheight</td><td>Numeric</td><td>Lowest-height complete block stored (only present if pruning is enabled).</td>
</tr>
<tr>
<td>softforks</td><td>Array</td><td>Status of softforks in progress.</td>
</tr>
<tr>
<td> id</td><td>String</td><td>Name of softfork.</td>
</tr>
<tr>
<td> version</td><td>Numeric</td><td>Block version.</td>
</tr>
<tr>
<td> reject</td><td>Object</td><td>Progress toward rejecting pre-softfork blocks.</td>
</tr>
<tr>
<td> Status</td><td>Boolean</td><td>True if threshold reached.</td>
</tr>
<tr>
<td>bip9_softforks</td><td>Array</td><td>Status of BIP9 softforks in progress.</td>
</tr>
<tr>
<td> $softfork_name</td><td>String (Variable)</td><td>Name of softfork.</td>
</tr>
<tr>
<td> Status</td><td>String</td><td>One of "defined", "started", "locked_in", "active", "failed".</td>
</tr>
<tr>
<td> bit</td><td>Numeric</td><td>The bit (0-28) in the block version field used to signal this softfork (only for "started" status).</td>
</tr>
<tr>
<td> startTime</td><td>Numeric</td><td>The minimum median time past of a block at which the bit gains its meaning.</td>
</tr>
<tr>
<td> timeout</td><td>Numeric</td><td>The median time past of a block at which the deployment is considered failed if not yet locked in.</td>
</tr>
<tr>
<td> since</td><td>Numeric</td><td>Height of the first block to which the status applies.</td>
</tr>
<tr>
<td> statistics</td><td>Object</td><td>Numeric statistics about BIP9 signalling for a softfork (only for "started" status).</td>
</tr>
<tr>
<td> period</td><td>Numeric</td><td>The length in blocks of the BIP9 signalling period.</td>
</tr>
<tr>
<td> threshold</td><td>Numeric</td><td>The number of blocks with the version bit set required to activate the feature.</td>
</tr>
<tr>
<td> elapsed</td><td>Numeric</td><td>The number of blocks elapsed since the beginning of the current period.</td>
</tr>
<tr>
<td> count</td><td>Numeric</td><td>The number of blocks with the version bit set in the current period.</td>
</tr>
<tr>
<td> possible</td><td>Boolean</td><td>Returns false if there are not enough blocks left in this period to pass activation threshold.</td>
</tr>
<tr>
<td>warnings</td><td>String</td><td>Any network and blockchain warnings.</td>
</tr>
</table>
</div>
</div>
<div class="table-responsive">
<table border=0 class='table'>
<tr>
<th style='width:30%;'>Params</th>
<th style='width:70%;'>Raw Result</th>
</tr>
<?php
foreach($displayRawResults as $thisResult) {
?>
<tr>
<td style='width:30%;'><?php echo htmlentities($thisResult[0])?></td>
<td style='width:70%;'>
<textarea class="form-control" readonly rows=4><?php echo htmlentities($thisResult[1]);?></textarea>
</td>
</tr>
<?php
}
?>
</table>
</div>
<?php
}
?>
<form id='this_form' action='' method='post'>
<div class="form-group">
<label for="network">Network:</label>
<select id="network" name="network" class="form-control" >
<?php
foreach($supportCoins as $k=>$v) {
echo "<option value='{$k}'".($k == $_POST['network'] ? " selected": "").">{$v}</option>";
}
?>
</select>
</div>
<input type='submit' class="btn btn-success btn-block"/>
</form>
<?php
include_once("html_iframe_footer.php");
Bitcoin-CLI Find Blockchain
<?php
include_once "../common.php"; //include this just to derive $_BITCOINCLI_CONFIG[...] variable
$supportCoins = ['btc/main'=>"Bitcoin Mainnet"];
$load_blocks = 10;
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
try {
if (!in_array($_POST['way'], ['after','before'])) {
throw new Exception("Please select one of 'Block Generation Way'.");
}
$displayRawResults = $blocks = [];
if (!ctype_digit($_POST['height'])) {
$postFields = [
'jsonrpc' => '1.0',
'id'=>'curltest',
'method'=>'getbestblockhash',
'params'=> []
];
} else {
$postFields = [
'jsonrpc' => '1.0',
'id'=>'curltest',
'method'=>'getblockhash',
'params'=> [(int)$_POST['height']]
];
}
$bitcoincliRpcProtocol = "http";
$bitcoincliRpcHost = $_BITCOINCLI_CONFIG['bitcoincli_rpc_host'];
$bitcoincliRpcPort = "8332";
$bitcoincliRpcUser = $_BITCOINCLI_CONFIG['bitcoincli_rpc_user'];
$bitcoincliRpcPwd = $_BITCOINCLI_CONFIG['bitcoincli_rpc_pwd'];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url = "{$bitcoincliRpcProtocol}://{$bitcoincliRpcHost}:{$bitcoincliRpcPort}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_POST , 1);
curl_setopt($ch, CURLOPT_USERPWD , "{$bitcoincliRpcUser}:{$bitcoincliRpcPwd}");
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_POSTFIELDS, $CURLOPT_POSTFIELDS = json_encode($postFields));
$rawResult = curl_exec($ch);
$displayRawResults[] = [$CURLOPT_POSTFIELDS, $rawResult];
if (curl_errno($ch)) {
throw new Exception('CURL Error: ' . curl_error($ch). "#" . curl_errno($ch));
} else if (!($result = json_decode($rawResult,true))) {
throw new Exception('Invalid JSON format.');
} else if (is_array($result['error']) AND $result['error'] !='null') {
throw new Exception('Bitcoin CLI Error: ' . $result['error']['message'] . "#" . $result['error']['code']);
} else {
$info = curl_getinfo($ch);
curl_close($ch);
$block_hash = $result['result'];
/*
verbosity = 0, returns a string that is serialized, hex-encoded data for block 'hash'.
verbosity = 1, returns an Object with information about block .
verbosity = 2, returns an Object with information about block and information about each transaction.
*/
$verbosity = 1;
while($load_blocks > 0 AND $block_hash) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url = "{$bitcoincliRpcProtocol}://{$bitcoincliRpcHost}:{$bitcoincliRpcPort}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_POST , 1);
curl_setopt($ch, CURLOPT_USERPWD , "{$bitcoincliRpcUser}:{$bitcoincliRpcPwd}");
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_POSTFIELDS, $CURLOPT_POSTFIELDS = json_encode(['jsonrpc' => '1.0','id'=>'curltest','method'=>'getblock','params'=> [$block_hash,$verbosity ]]));
$rawResult = curl_exec($ch);
if (curl_errno($ch)) {
throw new Exception('CURL Error: ' . curl_error($ch). "#" . curl_errno($ch));
} else if (!($result = json_decode($rawResult,true))) {
throw new Exception('Invalid JSON format.');
} else if (is_array($result['error']) AND $result['error'] !='null') {
throw new Exception('Bitcoin CLI Error: ' . $result['error']['message'] . "#" . $result['error']['code']);
} else {
$displayRawResults[] = [$CURLOPT_POSTFIELDS, $rawResult];
$block = $result['result'];
$blocks[] = $block;
if ($_POST['way'] == 'before') {
$block_hash = $block['previousblockhash'];
} else {
$block_hash = $block['nextblockhash'];
}
$load_blocks--;
}
}
krsort($blocks);
$blocks = array_values($blocks);
}
} catch (Exception $e) {
$errmsg .= "Problem found. " . $e->getMessage();
}
}
include_once("html_iframe_header.php");
if ($errmsg) {
?>
<div class="alert alert-danger">
<strong>Error!</strong> <?php echo $errmsg?>
</div>
<?php
}
if ($total_blocks = @count($displayRawResults) > 0) {
echo "<center>";
?>
<p><a href='#this_form' onclick="
var self = $(this);
$('#height', $('#this_form')).val('<?php echo ($blocks[0]['height']) + 1?>');
$('input[name=way][value=after]').prop('checked',true);
$('#height', $('#this_form')).focus();
">Load More ...</a></p>
<img src='../media/images/link.png'/>
<?php
echo "<div id='blockchain'>";
foreach($blocks as $k=>$block) {
$txs = $block['tx'];
unset($block['tx']);
?>
<div class='card' style='margin-top:10px;width:300px;'>
<div class='card-header'>
<?php echo $block['hash']?>
<table border=0 class='table-borderless'>
<tr>
<td>Height</td>
<td><?php echo $block['height']?></td>
</tr>
</table>
</div>
<div class='card-body'>
<div class='table-responsive'>
<h6>Header:</h6>
<table border=0 class='table-borderless'>
<tr>
<td>Version</td>
<td><?php echo $block['version']?></td>
</tr>
<tr>
<td>HashPrevBlock</td>
<td><?php echo $block['previousblockhash']?></td>
</tr>
<tr>
<td>MerkleRoot</td>
<td><?php echo $block['merkleroot']?></td>
</tr>
<tr>
<td>Time</td>
<td><?php echo $block['time']?></td>
</tr>
<tr>
<td>Bits</td>
<td><?php echo $block['bits']?></td>
</tr>
<tr>
<td>Nonce</td>
<td><?php echo $block['nonce']?></td>
</tr>
</table>
</div>
</div>
<div class='card-footer'>
<h6>Body:</h6>
Total <a href='bitcoin_start_block.php?block_hash=<?php echo $block['hash']?>'><?php echo $block['nTx']?></a> Transaction(s)
</div>
</div>
<img src='../media/images/link.png'/>
<?php
}
?>
</div>
<p><a href='#this_form' onclick="
var self = $(this);
$('#height', $('#this_form')).val('<?php echo ($blocks[count($blocks)-1]['height']) - 1?>');
$('input[name=way][value=before]').prop('checked',true);
$('#height', $('#this_form')).focus();
$('input[type=submit]', $('#this_form')).val('Submit To Load More');
">Load More ...</a></p>
</center>
<div class="table-responsive">
<table border=0 class='table'>
<tr>
<th style='width:30%;'>Params</th>
<th style='width:70%;'>Raw Result</th>
</tr>
<?php
foreach($displayRawResults as $thisResult) {
?>
<tr>
<td style='width:30%;'><?php echo htmlentities($thisResult[0])?></td>
<td style='width:70%;'>
<textarea class="form-control" readonly rows=4><?php echo htmlentities($thisResult[1]);?></textarea>
</td>
</tr>
<?php
}
?>
</table>
</div>
<?php
}
?>
<form id='this_form' action='' method='post'>
<div class="form-group">
<label for="network">Network:</label>
<select id="network" name="network" class="form-control" >
<?php
foreach($supportCoins as $k=>$v) {
echo "<option value='{$k}'".($k == $_POST['network'] ? " selected": "").">{$v}</option>";
}
?>
</select>
</div>
<div class="form-group">
<label for="height">Block Height:</label>
<input class="form-control" type='text' name='height' id='height' value='<?php echo $_POST['height']?>'>
* Put empty if you want latest block height.
</div>
<div class="form-group">
<label for="height">Block Generation Way:</label>
<div class="form-check-inline">
<label class="form-check-label">
<input type="radio" class="form-check-input" name="way" value="after"<?php echo $_POST['way']=='after' ? ' checked': ''?>>After Block Height
</label>
</div>
<div class="form-check-inline">
<label class="form-check-label">
<input type="radio" class="form-check-input" name="way" value="before"<?php echo $_POST['way']=='before' ? ' checked': ''?>>Before Block Height
</label>
</div>
</div>
<input type='submit' class="btn btn-success btn-block"/>
</form>
<?php
include_once("html_iframe_footer.php");
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