Java

/*MasterBugPatch
Feel free to send me bits ;) https://www.bustabit.com/user/masterbugpatch
*/
function runCheck(){
	var gamesToCheck = parseInt(document.getElementById("gamesInput").value);
  var hash = document.getElementById("hashInput").value;
  var crashToCheck = parseInt(document.getElementById("crashInput").value);

  var intervalsBetweenCrashes = [];
  var waitingForFirstCrash = true;
  var gamesTillCrash = 0;
  var mostRecentCrash = 0;
  for(var n = 0; n != gamesToCheck;n++){
    var gameCrash = crashPointFromHash(hash);
    if(gameCrash >= crashToCheck){
      if(waitingForFirstCrash){
        waitingForFirstCrash = false;
        mostRecentCrash = gamesTillCrash;
      }else{
        intervalsBetweenCrashes.push(gamesTillCrash);
      }
      gamesTillCrash = 0;
    }else{
        gamesTillCrash++;
    }
    hash = genGameHash(hash);
  }
  var result = "Last " + crashToCheck + "x occured " + mostRecentCrash + " games from the hash<br>Intervals between " + crashToCheck + "x crashes within last " + gamesToCheck + " games below..." + "<br>" + intervalsBetweenCrashes;
  document.getElementById("status").innerHTML = result;
}

function requestCheck(){
	document.getElementById("status").innerHTML = "Checking...";
  setTimeout(runCheck, 0);
}

/*ALL CODE BELOW THIS LINE IS FROM https://jsfiddle.net/1L1uqcgv/6/embedded/result/*/
function divisible(hash, mod) {
    var val = 0;

    var o = hash.length % 4;
    for (var i = o > 0 ? o - 4 : 0; i < hash.length; i += 4) {
        val = ((val << 16) + parseInt(hash.substring(i, i+4), 16)) % mod;
    }

    return val === 0;
}

function genGameHash(serverSeed) {
    return CryptoJS.SHA256(serverSeed).toString()
};


function hmac(key, v) {
    var hmacHasher = CryptoJS.algo.HMAC.create(CryptoJS.algo.SHA256, key);
    return hmacHasher.finalize(v).toString();
}

function crashPointFromHash(serverSeed) {
    // see: provably fair seeding event
    var hash = hmac(serverSeed, '000000000000000007a9a31ff7f07463d91af6b5454241d5faf282e5e0fe1b3a');

    // In 1 of 101 games the game crashes instantly.
    if (divisible(hash, 101))
        return 0;

    // Use the most significant 52-bit from the hash to calculate the crash point
    var h = parseInt(hash.slice(0,52/4),16);
    var e = Math.pow(2,52);

    return (Math.floor((100 * e - h) / (e - h))/100).toFixed(2);
};