Find Server Seed from Hash Verification Script
<p>View this jsfiddle: <a href="https://jsfiddle.net/1L1uqcgv/6/" rel="nofollow noreferrer">https://jsfiddle.net/1L1uqcgv/6/</a></p>
<pre><code>function refreshTable(){
    var hash = document.getElementById(&quot;gameHash&quot;).value;
    var lastHash = &quot;&quot;;
    var amount = document.getElementById(&quot;gameAmount&quot;).value;

    var tableBody = document.getElementById(&quot;tbody&quot;);
    tableBody.innerHTML = &quot;&quot;;
    for(var i=0; i&lt;amount; i++){
    var gameHash = (lastHash!=&quot;&quot;?genGameHash(lastHash):hash);
    var gameCrash = crashPointFromHash((lastHash!=&quot;&quot;?genGameHash(lastHash):hash));
    var clr = gameCrash &gt; 1.97 ? 'green': (gameCrash &lt; 1.97 ? 'red' : 'blue');
    tableBody.innerHTML += &quot;&lt;tr&gt;&lt;td&gt;&quot;+gameHash+&quot;&lt;/td&gt;&lt;td style='background:&quot; + clr + &quot;'&gt;&quot;+gameCrash+&quot;&lt;/td&gt;&lt;/tr&gt;&quot;;
    
    lastHash = gameHash;
    }
}


function divisible(hash, mod) {
// So ABCDEFGHIJ should be chunked like  AB CDEF GHIJ
var val = 0;

var o = hash.length % 4;
for (var i = o &gt; 0 ? o - 4 : 0; i &lt; hash.length; i += 4) {
    val = ((val &lt;&lt; 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);
};
</code></pre>
<p>Is it possible to find the &quot;serverSeed&quot; as shown in lines 31 and 41?
To find previous games, a hash is entered into the box, showing all previous games. Would serverSeed be used to find these hashes, or does the single hash create all previous hashes?</p>