PROVABLY FAIR

<?php
$secret      = 'Type secret';
$round_hash  = 'Type Round hash';
$seed        = $round_hash . $secret;
mt_srand(crc32($seed));
$ticket     = mt_rand(1, 1000) / 10;
var_dump($ticket);
?>

Verify a round

Paste the round hash and the revealed secret. We'll re-hash the secret with SHA-256 and confirm the round was sealed before it ran.

HashSecret