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A Pen By Captain Anonymous

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              <div class="container">
  <h1>Bet Verifier</h1>
    <div class="form-group">
      <label for="serverSeed">Server Seed</label>
      <input id="serverSeed" type="text" class="form-control">
    <div class="form-group">
      <label for="clientSeed">Client Seed</label>
      <input id="clientSeed" type="text"  class="form-control">
    <div class="form-group">
      <label for="nonce">Nonce</label>
      <input id="nonce" type="text" class="form-control">
    <div class="form-group">
      <label for="serverSeedHash">Server Seed (Hashed)</label>
      <input id="serverSeedHash" type="text" class="form-control" disabled>
    <div class="form-group">
      <label for="roll">Roll</label>
      <input id="roll" type="text" class="form-control" disabled>
              function getRoll(serverSeed, clientSeed, nonce) {
  var hash = sha512(serverSeed + clientSeed + nonce);
  var index = 0;
  do {
    var lucky = parseInt(hash.substr(index, 5), 16);
    index += 5;
  } while (lucky >= 1000000);
  return lucky % 10000;

var $serverSeed = $('#serverSeed');
var $clientSeed = $('#clientSeed');
var $nonce = $('#nonce');
var $serverSeedHash = $('#serverSeedHash');
var $roll = $('#roll');

var url = $.url(document.location.href);


$('form').keyup(function() {
  var serverSeed = $serverSeed.val();
  var clientSeed = $clientSeed.val();
  var nonce = $nonce.val();

  $serverSeedHash.val(serverSeed ? sha256(serverSeed) : '<Empty Server Seed>');
  if (!serverSeed) {
    $roll.val('<Empty Server Seed>');
  } else if (!clientSeed) {
    $roll.val('<Empty Client Seed>');
  } else if (nonce === '') {
    $roll.val('<Empty Nonce>');
  } else {
    $roll.val(getRoll(serverSeed, clientSeed, nonce));
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