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Credit calculation script
Alex Grin edited this page 2021-10-22 10:33:32 -04:00
#!/usr/bin/php
<?php
function getReward($block) {
if ($block == 0) {
return 400000000;
}
elseif ($block <= 5100) {
return 1;
}
elseif ($block <= 55000) {
return 1 + floor(($block - 5001) / 100);
}
else {
return max(0, 500 - floor(((sqrt(($block - 55001) / 4 + 1)) - 1) / 2));
}
}
function getTotalReward($fromBlock, $toBlock) {
if ($toBlock < $fromBlock) return 0;
return array_sum(array_map('getReward', range($fromBlock,$toBlock)));
}
$blockTime = 161.58;
$start = 1466646588;
$now = gmdate('U');
$blocksNow = floor(($now - $start) / $blockTime);
$arg = isset($_SERVER['argv'][1]) ? $_SERVER['argv'][1] : 'now';
if (preg_match('/^\d+b$/', $arg)) {
$blocksAtTarget = (int)substr($arg,0,-1);
$target = $start + $blocksAtTarget*$blockTime;
}
else {
$target = gmdate('U', strtotime($arg));
$blocksAtTarget = floor(($target - $start) / $blockTime);
}
echo "Start: $start (" . date('Y-m-d H:i:s', $start) . ")\n";
echo "Now: $now (" . date('Y-m-d H:i:s', $now) . ")\n";
echo "Target: $target (" . date('Y-m-d H:i:s', $target) . ")\n";
echo "\n";
echo "Blocks now (assuming {$blockTime} seconds per block): " . number_format($blocksNow) . "\n";
echo "Credits now (assuming {$blockTime} seconds per block): " . number_format(getTotalReward(1,$blocksNow)) . "\n";
echo "\n";
echo "Blocks at target: " . number_format($blocksAtTarget) . "\n";
echo "Credits from now to target: " . ($blocksNow>=$blocksAtTarget ? 0 : number_format(getTotalReward($blocksNow,$blocksAtTarget))) . "\n";
echo "Credits at target: " . number_format(getTotalReward(1,$blocksAtTarget)) . "\n";
echo "Reward of target block: " . number_format(getReward($blocksAtTarget)) . "\n";
?>