A Pen by trustdice.win on CodePen.
Created
July 9, 2025 00:18
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Crash Verifier
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| <body> | |
| <div class="container pb-3 px-5"> | |
| <h1 class="text-center p-3 alert-info"> | |
| <a href="https://trustdice.win/crash" target="_blank" class="alert-link"> <u>TRUSTDICE.WIN</u></a> CRASH VERIFIER | |
| </h1> | |
| <div class="config"> | |
| <div class="input-group mb-3"> | |
| <div class="input-group-prepend"> | |
| <span class="input-group-text"><b>Game's Hash</b></span> | |
| </div> | |
| <input id="gameHash" type="text" spellcheck="false" class="form-control" | |
| placeholder="Game's hash you want to validate"> | |
| </div> | |
| <div class="input-group mb-3"> | |
| <div class="input-group-prepend"> | |
| <span class="input-group-text"><b>Game's Amount</b></span> | |
| </div> | |
| <input id="gameAmount" value="10" type="number" spellcheck="false" class="form-control" | |
| placeholder="Amount of game to show from this hash"> | |
| </div> | |
| <button type="button" class="btn btn-info btn-block btn-lg" onclick="verifyCrashPoint();">VERIFY CRASH POINT | |
| </button> | |
| </div> | |
| <hr class="my-4"> | |
| <div class="result"> | |
| <table id="hashTable" class="table table-striped"> | |
| <thead> | |
| <tr> | |
| <th>Game's hash</th> | |
| <th>Crash Point</th> | |
| </tr> | |
| </thead> | |
| <tbody id="tbody"></tbody> | |
| </table> | |
| </div> | |
| </div> | |
| </body> |
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| // NOTE: For the 23th round crash game verification, please refer: https://codepen.io/trustdice/pen/qEEzpXL | |
| // The provably fair detail refer https://help.trustdice.win/collections/1988793-crash-game | |
| // The block chain record refer https://eosflare.io/tx/ebd7d0e635b740c5b7157d5a3ec57a404303fea24172db1290ad1e6d4268e33f | |
| // Block #436496677 Hash value: https://eosflare.io/block/436496677 | |
| const salt = '1a046925873519331d2dcaf2812cb6783d4a9d2ebb61c5f0c2e363cece13accd'; | |
| let query = URI(document.location.search).search(true); | |
| $("#gameHash").val(query.game_hash); | |
| function verifyCrashPoint() { | |
| let hash = $("#gameHash").val(); | |
| if (hash.length !== 64) { | |
| alert("Please input valid game hash!"); | |
| return; | |
| } | |
| let lastHash = ""; | |
| let amount = $("#gameAmount").val(); | |
| let $tableBody = $("#tbody"); | |
| $tableBody.html(""); | |
| for (let i = 0; i < amount; i++) { | |
| let gameHash = (lastHash !== "" ? genGameHash(lastHash) : hash); | |
| let gameCrash = crashPointFromGameHash(gameHash); | |
| let colorClass = gameCrash > 1.97 ? 'green' : (gameCrash < 1.97 ? 'red' : 'blue'); | |
| let newRow = "<tr><td>" + gameHash + "</td><td class='" + colorClass + "'>" + gameCrash + "</td></tr>"; | |
| $tableBody.append(newRow); | |
| lastHash = gameHash; | |
| } | |
| } | |
| function genGameHash(lastGameHash) { | |
| return sha256(lastGameHash) | |
| } | |
| function crashPointFromGameHash(gameHash) { | |
| let seed = gameHash; | |
| let hash = sha256(seed + salt); | |
| let h = parseInt(hash.slice(0, 13), 16); | |
| let e = Math.pow(2, 52); | |
| let result = Math.floor((96 * e) / (e - h)); | |
| if (result < 101) { | |
| result = 0; | |
| } | |
| if (result > 10000000) { | |
| result = 10000000 | |
| } | |
| return (result / 100).toFixed(2); | |
| } |
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| <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/URI.js/1.19.1/URI.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/js-sha256/0.3.2/sha256.min.js"></script> |
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| body { | |
| background-color: #d1ecf1; | |
| } | |
| .config, .result { | |
| padding: 20px 16px; | |
| border-radius: 3px; | |
| } | |
| .config { | |
| background: #90c2ea8c; | |
| } | |
| .config .input-group-text { | |
| width: 150px; | |
| } | |
| .table thead th { | |
| border-top: 1px solid rgba(0, 0, 0, 0.3); | |
| border-bottom: 1px solid rgba(0, 0, 0, 0.3); | |
| } | |
| table { | |
| border-collapse: collapse; | |
| } | |
| table, th, td { | |
| border: 1px solid rgba(0, 0, 0, 0.3); | |
| font-family: Consolas,"Courier New",Courier,FreeMono,monospace; | |
| } | |
| th, td { | |
| padding: 5px; | |
| } | |
| th:first-child, | |
| td:first-child { | |
| min-width: 680px; | |
| } | |
| td:last-child{ | |
| font-weight: bold; | |
| } | |
| .red { | |
| background: red; | |
| } | |
| .green { | |
| background: green; | |
| } | |
| .blue { | |
| background: blue; | |
| } |
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| <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet" /> |
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