contrib/chash/chash.php

   1 <?php
   2 error_reporting(E_ALL | E_STRICT);
   3
   4 // Load scrypt
   5 require 'lib/functions.php';
   6 require 'lib/scrypt.php';
   7
   8 define('START_TIME'            , microtime(true));
   9 define('CHECKPOINT_FILE'           , 'chash.pos');
  10
  11 // Hashes needed to complete a "block"
  12 $GLOBALS['block_size']          = 100;
  13 $GLOBALS['none_increment']      = (1 / pow(10, 20));
  14
  15 // Automatic saving interval in seconds
  16 $GLOBALS['flush_file_time']     = 30;
  17
  18 /*
  19  * How long (in seconds) to try to find a proper hash until the best root hash
  20  * is taken.
  21  */
  22 $GLOBALS['restart_search_time'] = 1800;
  23
  24 // Hashes per call
  25 $GLOBALS['hash_cycles'] = 2;
  26
  27 // Total restarts
  28 $GLOBALS['total_restarts'] = 0;
  29
  30 // Initial salt (may be overwritten by loading checkpoint file)
  31 $GLOBALS['salt'] = Scrypt::generateSalt();
  32
  33 // Starting difficulty
  34 $GLOBALS['difficulty'] = 2;
  35
  36 // Found hashes
  37 $GLOBALS['found_hashes'] = array([]);
  38
  39 /**
  40  * Continued-hashing
  41  *
  42  * @author              Roland Haeder <roland@mxchange.org>
  43  * @copyright   Copyright (c) 2013 by Core Developer Team
  44  * @license             See LICENSE (public-domain)
  45  */
  46
  47 // Is the check point there?
  48 if (is_readable(CHECKPOINT_FILE)) {
  49         // Load it
  50         loadCheckpointFile();
  51 } else {
  52         // Create nonce (very small)
  53         initNonce();
  54 }
  55
  56 /*
  57  * Calculate "genesis" hashes, please note that these "genesis strings" are now
  58  * known to the public as you can read them here in source code and therefore I
  59  * will not use them for the real genesis hashes.
  60  */
  61 $gensisHashes = array(
  62         // A famous quote from Deus Ex 2 - Invisible War
  63         multiplehashString('"Informations must be free." - AI Helios from Deus Ex'),
  64         // My name + URL of my GNUSocial instance
  65         multipleHashString('Roland Haeder, https://social.mxchange.org'),
  66         // A famous quote from Linus Torwalds
  67         multipleHashString('"Software is like sex. Its better when its free." - Linus Torwalds'),
  68         // Well ...
  69         multipleHashString('September 11 is a big lie.'),
  70
  71         // GNU is not Uni*
  72         multipleHashString('GNU is Not Uni*.'),
  73         // WINE is not an emulator
  74         multipleHashString('WINE Is Not an Emulator.'),
  75         // FlightGear - Fly free!
  76         multipleHashString('FlightGear - Fly free!'),
  77         // Quote from Linus Torwalds
  78         multipleHashString('Your code is shit. Your argument is shit.'),
  79 );
  80
  81 // Calculate first "block"
  82 $genesisBlock = array(
  83         hashString($gensisHashes[0] . $gensisHashes[3]),
  84         hashString($gensisHashes[1] . $gensisHashes[2]),
  85         hashString($gensisHashes[4] . $gensisHashes[7]),
  86         hashString($gensisHashes[5] . $gensisHashes[6]),
  87 );
  88
  89 // Calulcate final "genesis" hash
  90 $genesisHash = hashString(
  91         $genesisBlock[3] .
  92         $genesisBlock[0] .
  93         $genesisBlock[2] .
  94         $genesisBlock[1]
  95 );
  96
  97 // Get all elements to get the last part out
  98 $elements = explode('$', $genesisHash);
  99
 100 // This is also the "genesis" hash and first root hash
 101 $GLOBALS['current_hash'] = $genesisHash;
 102 $GLOBALS['root_hash']    = $genesisHash;
 103 $GLOBALS['sum_genesis']  = sumHash($elements[4]);
 104
 105 // Output results
 106 print ('hashes=' . print_r($gensisHashes, true));
 107
 108 // Total reward + hashes
 109 $GLOBALS['total_reward']   = 0;
 110 $GLOBALS['total_hashes']   = 0;
 111 $GLOBALS['total_found']    = 0;
 112 $GLOBALS['total_blocks']   = 0;
 113 $GLOBALS['found_time']     = microtime(true);
 114
 115 // Output again
 116 print ('nonce=' . $GLOBALS['nonce'] . PHP_EOL);
 117 print ('found=' . count($GLOBALS['found_hashes'][$GLOBALS['total_blocks']]) . PHP_EOL);
 118 print ('salt=' . $GLOBALS['salt'] . PHP_EOL);
 119 print ('difficulty=' . $GLOBALS['difficulty'] . PHP_EOL);
 120
 121 // Start "mining"
 122 while (true) {
 123         // Init hash-per-block counter and hashrate
 124         $GLOBALS['hashes_block'] = 0;
 125         $hashRate = 1;
 126
 127         // Wait for block_size iterations (= found hashes). This is one block
 128         $timeBlock   = microtime(true);
 129         $timeDisplay = $timeBlock;
 130         $GLOBALS['time_flush'] = $timeBlock;
 131
 132         // Time waited for a good block again (no iteration)
 133         $timeBadHashes = 0;
 134
 135         while (count($GLOBALS['found_hashes'][$GLOBALS['total_blocks']]) <= $GLOBALS['block_size']) {
 136                 // Create hash from modulaHash ("genesis hash") and nonce
 137                 $nonceHash = multipleHashString($GLOBALS['nonce'] . $GLOBALS['current_hash']);
 138
 139                 // Calculate sums
 140                 $sumNonce  = calculateSumFromHash($nonceHash);
 141
 142                 // Init counter
 143                 $GLOBALS['iteration'] = 0;
 144                 $GLOBALS['iteration_second'] = 0;
 145
 146                 // Now start the "mining" ...
 147                 $timeHash = microtime(true);
 148                 while ($sumNonce < $GLOBALS['sum_genesis']) {
 149                         // Calculate new nonce
 150                         calculateNonce();
 151
 152                         // And hash again
 153                         $nonceHash = multipleHashString($GLOBALS['nonce'] . $GLOBALS['current_hash']);
 154
 155                         // Calculate sums
 156                         $sumNonce  = calculateSumFromHash($nonceHash);
 157
 158                         // Time spend in loop
 159                         $testTime = abs(microtime(true) - $timeDisplay);
 160
 161                         // Calculate hashrate/sec
 162                         $hashRate = 1 / $testTime * $GLOBALS['iteration_second'] * $GLOBALS['hash_cycles'];
 163
 164                         // Only every second
 165                         if ($testTime >= 1) {
 166                                 // Display hash rate
 167                                 print ('hashrate=' . round($hashRate) . ' hashes/sec,iterSecond=' . $GLOBALS['iteration_second'] . ' iterations/sec,difficulty=' . $GLOBALS['difficulty'] . PHP_EOL);
 168
 169                                 // Reset timer
 170                                 $timeDisplay = microtime(true);
 171                                 $GLOBALS['iteration_second']  = 0;
 172                         }
 173
 174                         // Time spend from last flush
 175                         $testTime = abs(microtime(true) - $GLOBALS['time_flush']);
 176
 177                         // Only once per 10 seconds
 178                         if ($testTime >= $GLOBALS['flush_file_time']) {
 179                                 // Flush check-point file
 180                                 flushCheckPointFile($GLOBALS['current_hash']);
 181                         }
 182
 183                         // Time spend from last found block
 184                         $testTime = abs(microtime(true) - $GLOBALS['found_time']);
 185
 186                         // Is the last found time to far away?
 187                         if ($testTime >= $GLOBALS['restart_search_time']) {
 188                                 // Count up restart and reduce difficulty, but never below 2
 189                                 $GLOBALS['total_restarts']++;
 190                                 $GLOBALS['difficulty'] = max(2, ($GLOBALS['difficulty'] / 2));
 191
 192                                 // Output message
 193                                 print('total_restarts=' . $GLOBALS['total_restarts'] . ' - Restarting ...');
 194
 195                                 // Count all root (genesis) hashes
 196                                 $rootHashes = [];
 197                                 foreach ($GLOBALS['found_hashes'] as $block) {
 198                                         // "Walk" through all blocks
 199                                         foreach ($block as $hash) {
 200                                                 if (!isset($hash['root_hash'])) {
 201                                                         // Bad file
 202                                                         die('INCONSISTENCY: hash=' . print_r($hash, true));
 203                                                 }
 204
 205                                                 if (isset($rootHashes[$hash['root_hash']])) {
 206                                                         // Count up
 207                                                         $rootHashes[$hash['root_hash']]++;
 208                                                 } else {
 209                                                         // First entry found
 210                                                         $rootHashes[$hash['root_hash']] = 1;
 211                                                 }
 212                                         }
 213                                 }
 214
 215                                 // Find best root hash
 216                                 $bestRootHash = '';
 217                                 $bestRootCount = 0;
 218                                 foreach ($rootHashes as $hash => $count) {
 219                                         // Is a better one found?
 220                                         //* NOISY-DEBUG: */ print ('hash=' . $hash . ',count=' . $count . ',bestRootHash=' . $bestRootHash . ',bestRootCount=' . $bestRootCount . PHP_EOL);
 221                                         if ($count > $bestRootCount) {
 222                                                 // Remember it
 223                                                 $bestRootHash  = $hash;
 224                                                 $bestRootCount = $count;
 225                                         }
 226                                 }
 227
 228                                 // Output message
 229                                 print ('bestRootHash=' . $bestRootHash . ',bestRootCount=' . $bestRootCount . PHP_EOL);
 230
 231                                 // Search for latest best root hash
 232                                 foreach ($GLOBALS['found_hashes'] as $block) {
 233                                         // "Walk" through whole block and search for first appearance of best root hash
 234                                         foreach ($block as $idx => $hash) {
 235                                                 // Is the root hash there?
 236                                                 if ($hash['root_hash'] == $bestRootHash) {
 237                                                         // Set found modula hash as new root and current modula hash
 238                                                         $GLOBALS['root_hash']   = $hash['nonce_hash'];
 239                                                         setModulaHash($hash['nonce_hash']);
 240                                                         print ('idx=' . $idx . ',modulaHash=' . $GLOBALS['root_hash'] . ' - Is now new root hash!' . PHP_EOL);
 241
 242                                                         // Reset "found time" (when a hash was found)
 243                                                         $GLOBALS['found_time'] = microtime(true);
 244
 245                                                         // Re-initialize nonce
 246                                                         initNonce();
 247
 248                                                         // Abort search
 249                                                         break;
 250                                                 }
 251                                         }
 252                                 }
 253                         }
 254
 255                         // Next round
 256                         $GLOBALS['iteration']++;
 257                         $GLOBALS['iteration_second']++;
 258                         //* NOISY-DEBUG: */ print('nonce=' . $GLOBALS['nonce'] . ',iteration=' . $GLOBALS['iteration'] . PHP_EOL);
 259                         //* NOISY-DEBUG: */ print('nonceHash=' . $nonceHash . PHP_EOL);
 260                         //* NOISY-DEBUG: */ print('sumNonce=' . $sumNonce . PHP_EOL);
 261                         //* NOISY-DEBUG: */ print('sumGenesis=' . $GLOBALS['sum_genesis'] . PHP_EOL);
 262                 }
 263
 264                 // If the iteration is zero, then no hash is found
 265                 if ($GLOBALS['iteration'] == 0) {
 266                         // Bad hash found
 267                         $timeBadHashes += abs(microtime(true) - $timeHash);
 268
 269                         // Nothing found, so calculate new nonce
 270                         //* NOISY-DEBUG: */ print('BAD:nonce=' . $GLOBALS['nonce'] . PHP_EOL);
 271                         calculateNonce();
 272                         continue;
 273                 }
 274
 275                 // Add amount of hashes per block (multiple-hash)
 276                 $GLOBALS['hashes_block'] += $GLOBALS['iteration'] * $GLOBALS['hash_cycles'] + $GLOBALS['hash_cycles'];
 277
 278                 // Push found hash
 279                 addFoundHash($nonceHash);
 280         }
 281
 282         // Flush check-point file
 283         flushCheckPointFile($GLOBALS['current_hash']);
 284
 285         // Time taken for one
 286         $timeBlock = abs(microtime(true) - $timeBlock);
 287
 288         // Calculate reward
 289         $reward = abs($timeBlock - $timeBadHashes) / max(1, $hashRate) * $GLOBALS['hashes_block'] / max(1, $GLOBALS['block_size']) * 1000;
 290         print('timeBlock=' . $timeBlock . ',timeBadHashes=' . $timeBadHashes . ',hashesPerBlock=' . $GLOBALS['hashes_block'] .',reward=' . $reward . PHP_EOL);
 291
 292         // Increase difficulty
 293         $GLOBALS['difficulty'] = $GLOBALS['difficulty']++;
 294
 295         // Block completed
 296         $GLOBALS['total_hashes'] += $GLOBALS['hashes_block'];
 297         $GLOBALS['total_blocks']++;
 298         $GLOBALS['hashes_block'] = 0;
 299
 300         // Init next block
 301         $GLOBALS['found_hashes'][$GLOBALS['total_blocks']] = [];
 302
 303         // Calculate new nonce
 304         calculateNonce();
 305
 306         // Add reward to total
 307         $GLOBALS['total_reward'] += $reward;
 308
 309         // Calculate average block value
 310         $blockValue = $GLOBALS['total_reward'] / $GLOBALS['total_blocks'] * $GLOBALS['total_hashes'] / ($GLOBALS['block_size'] * $GLOBALS['total_blocks']);
 311
 312         // Calculate reward per hour (= 3600 seconds)
 313         $rewardPerHour = $GLOBALS['total_reward'] / abs(microtime(true) - START_TIME) * 3600;
 314
 315         print ('totalReward=' . $GLOBALS['total_reward'] . ',blockValue=' . $blockValue . ',rewardPerHour=' . $rewardPerHour . PHP_EOL);
 316 }