diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 0000000..1914ee8
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,23 @@
+[_.babelrc.txt](https://github.com/bcgame-project/verify/files/12311136/_.babelrc.txt)
+[info.txt](https://github.com/bcgame-project/verify/files/12311133/info.txt)
+# Security Policy
+
+## Supported Versions
+
+Use this section to tell people about which versions of your project are
+currently being supported with security updates.
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 5.1.x   | :white_check_mark: |
+| 5.0.x   | :x:                |
+| 4.0.x   | :white_check_mark: |
+| < 4.0   | :x:                |
+
+## Reporting a Vulnerability
+
+Use this section to tell people how to report a vulnerability.
+
+Tell them where to go, how often they can expect to get an update on a
+reported vulnerability, what to expect if the vulnerability is accepted or
+declined, etc.
diff --git a/baccarat.html b/baccarat.html
index bc1816d..cbddbd1 100644
--- a/baccarat.html
+++ b/baccarat.html
@@ -297,7 +297,7 @@ <h2 class="text-center pb-5">Results</h2>
         amount: 10,
         initHash: qs.hash,
         salt:
-          "00000000000000000009c6d5d13f0bf616e9601ab9b7f2dce635492700aaa773",
+          "0000000000000000000301e2801a9a9598bfb114e574a91a887f2132f33047e6",
         result: [],
       },
       computed: {},
diff --git a/baccaratsingle.html b/baccaratsingle.html
new file mode 100644
index 0000000..18734d8
--- /dev/null
+++ b/baccaratsingle.html
@@ -0,0 +1,235 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Baccarat Single Verify</title>
+  <link rel="stylesheet" href="./lib/main.css">
+  <link rel="stylesheet" href="./lib/bootstrap/css/bootstrap.min.css">
+  <script src="./lib/react.production.min.js"></script>
+  <script src="./lib/react-dom.production.min.js"></script>
+  <script src="./lib/crypto-js.js"></script>
+  <script src="./lib/tools.js"></script>
+  <script src="./lib/hooks.js"></script>
+  <script src="./lib/babel.min.js"></script>
+  <style>
+    .cards-list {
+      margin-bottom: 12px;
+      display: flex;
+      align-items: center;
+    }
+    .cards-list .card {
+      margin-right: 20px;
+    }
+    .card.red {
+      color: #f00;
+    }
+  </style>
+</head>
+<body>
+  <div id="app"></div>
+  <script type="text/babel">
+    let qs = tools.queryString();
+    let { useEffect, useMemo } = React;
+    const { useSetState } = hooks;
+    function useInputControl (initState) {
+      const [state, setState] = useSetState(initState);
+      const bind = key => ({
+        value: state[key],
+        onChange: v => setState({[key]: v})
+      });
+      return [
+        state,
+        setState,
+        bind
+      ];
+    }
+    function Input ({value, onChange, ...others}) {
+      return (
+        <div class="form-group">
+          <input value={value}
+            onChange={e => onChange(e.target.value)}
+            class="form-control"
+            {...others}
+          />
+        </div>
+      );
+    }
+
+    const allNums = [
+      161, 180, 199, 218, 162, 205, 181, 200, 219, 163, 182, 220, 201, 177, 196,
+      215, 170, 178, 221, 197, 216, 171, 179, 198, 172, 217, 193, 212, 167, 186,
+      194, 173, 213, 168, 187, 195, 214, 188, 169, 209, 164, 183, 202, 210, 189,
+      165, 184, 203, 211, 166, 204, 185,
+    ];
+
+    function createCards (hash, times, cards, hashList) {
+      hashList.push(hash);
+      if (times <= 0) return
+      let h = hash;
+      allNums.forEach((c) => {
+        cards.push({card: c, hash: h});
+        h = h.substring(1) + h.charAt(0);
+      });
+
+      hash = String(CryptoJS.SHA256(hash));
+      times--;
+      createCards(hash, times, cards, hashList);
+    }
+
+    function create (hash, times) {
+      times = times || 2;
+      let cards = [];
+      let hashList = [];
+      createCards(hash, times, cards, hashList);
+      cards.sort(function (o1, o2) {
+        if (o1.hash < o2.hash) {
+          return -1;
+        } else if (o1.hash == o2.hash) {
+          return 0;
+        } else {
+          return 1;
+        }
+      })
+      return cards;
+    }
+
+    function canBankerGetCard (point, palyerPoint, thirdCardPoint) {
+      if(palyerPoint >= 8) return false;
+      if(point <= 2) return true;
+      else if(point === 3) {
+        return thirdCardPoint !=8 ;
+      } else if(point === 4) {
+        return [0, 1, 8, 9].indexOf(thirdCardPoint) < 0;
+      } else if(point === 5) {
+        return [0, 1, 2, 3, 8, 9].indexOf(thirdCardPoint) < 0;
+      } else if(point === 6) {
+        return [6, 7].indexOf(thirdCardPoint) >= 0;
+      }
+      return false;
+    }
+
+    function getPoint (list) {
+      const result = list.reduce((pre, item) => {
+        const currPoint = item.pointNum > 10 ? 10 : item.pointNum;
+        return pre + currPoint;
+      }, 0)
+      return result % 10;
+    }
+
+    function getRestlt (hash) {
+      let beginHash = String(tools.sha256(hash));
+      const resultList = create(beginHash);
+      return resultList.map((m) => m.card);
+    }
+
+    function createCardFram(card) {
+      const CARDS = " ,A,2,3,4,5,6,7,8,9,10,J,Q,K".split(",");
+      const SUITS = ["♠", "♥", "♣", "♦"];
+      let suitsIndex = (card & 240) / 16 - 10;
+      let suits = SUITS[suitsIndex];
+      let point = CARDS[card % 16];
+      let pointNum = card % 16;
+      let style = suitsIndex % 2 === 0 ? "black" : "red";
+      let classNames = ["cardbox", style];
+      return {
+        style,
+        suits,
+        point,
+        pointNum: pointNum > 10 ? 10 : pointNum
+      };
+    }
+
+    function encode(suit, point) {
+      return ((suit + 10) << 4) + point;
+    }
+
+    function BaccaratSingle () {
+      const [state, setState, bind] = useInputControl({
+        clientSeed: qs.c||'',
+        serverSeed: qs.s||'',
+        nonce: qs.n||''
+      });
+
+      const result = useMemo(() => {
+        const serverSeedHash = tools.sha256(state.serverSeed);
+        const resultArr = [state.clientSeed, state.nonce];
+        const hmacSha256Result = String(CryptoJS.HmacSHA256(resultArr.join(":"), state.serverSeed));
+        const resultList = getRestlt(hmacSha256Result);
+        const player = [createCardFram(resultList[0]), createCardFram(resultList[2])];
+        const banker = [createCardFram(resultList[1]), createCardFram(resultList[3])];
+        const palyerPoint = getPoint(player);
+        const bankerPoint = getPoint(banker);
+        const isPlayerGetCard = palyerPoint % 10 < 6;
+        const isBankerEnd = bankerPoint % 10 >= 8;
+        if(isPlayerGetCard && !isBankerEnd) {
+          player.push(new Card(resultList[4]));
+        }
+        const thirdCardPoint = player[2] ? getPoint([player[2]]) % 10 : -1;
+        const flag = canBankerGetCard(bankerPoint % 10, palyerPoint % 10, thirdCardPoint);
+        if(flag) banker.push(isPlayerGetCard ? createCardFram(resultList[5]) : createCardFram(resultList[4]));
+        const playerPointFinal = getPoint(player);
+        const bankerPointFinal = getPoint(banker);
+        return {
+          player,
+          banker,
+          playerPointFinal,
+          bankerPointFinal,
+          hmacSha256Result,
+
+        }
+      }, [state]);
+      const {player, banker, playerPointFinal, bankerPointFinal} = result;
+      return (
+        <div className="main">
+          <h1 className="text-center pb-5">Baccarat single verify</h1> 
+          <hr />
+          <h2 class="text-center">Input</h2>
+          <form className="py-5">
+            <Input placeholder="Server Seed" {...bind('serverSeed')} />
+            <Input placeholder="Client Seed (Hashed)" {...bind('clientSeed')} />
+            <Input placeholder="Nonce" {...bind('nonce')} />
+          </form>
+          <h2 class="text-center">Output</h2>
+          <form className="py-5">
+            <Input placeholder="HmacSHA256(clientSeed, serverSeed)" readOnly value={result.hmacSha256Result} />
+            <h5 style={{marginTop: 20}}>Result</h5>
+            <div className="result-list">
+              <div className="player-cards">
+                <p>Player: {playerPointFinal % 10}</p>
+                <div className="cards-list">
+                  {player.map((item, index) => {
+                    const clname = "result-card-item" + (index+1);
+                    return (
+                      <div className={clname + " card " + item.style} key={item.pointNum + "-" + index}>
+                        <div className="flower">{item.suits}</div>
+                        <div className="point">{item.point}</div>
+                      </div>
+                    )
+                  })}
+                </div>
+              </div>
+              <div className="banker-cards">
+                <p>Banker: {bankerPointFinal % 10}</p>
+                <div className="cards-list">
+                  {banker.map((item, index) => {
+                    const clname = "result-card-item" + (index+1);
+                    return (
+                      <div className={clname + " card " + item.style} key={item.pointNum + "-" + index}>
+                        <div className="flower">{item.suits}</div>
+                        <div className="point">{item.point}</div>
+                      </div>
+                    )
+                  })}
+                </div>
+              </div>
+            </div>
+          </form>
+        </div>
+      );
+    }
+    ReactDOM.render(<BaccaratSingle />, document.getElementById("app"));
+  </script>
+</body>
+</html>
diff --git a/crash.html b/crash.html
index 021ea76..847d033 100644
--- a/crash.html
+++ b/crash.html
@@ -87,6 +87,7 @@ <h2 class="subtitle">Third party script used to verify games on crash game.</h2>
     <hr>
     <div class="container">
       <p>We made the decision to update Crash using a salted hash as requested by our players in order to provide the most randomized and fair results possible after Bet <span class="has-text-info"># 2561902</span>. For further details, please visit <a target="_blank" href="https://bitcointalk.org/index.php?topic=5256606">https://bitcointalk.org/index.php?topic=5256606</a></p>
+      <p>We made the decision to update Crash using a salted hash as requested by our players in order to provide the most randomized and fair results possible after Bet <span class="has-text-info"># 5282960</span>. For further details, please visit <a target="_blank" href="https://bitcointalk.org/index.php?topic=5416694">https://bitcointalk.org/index.php?topic=5416694</a></p>
     </div>
     <hr>
     <div class="container">
@@ -100,7 +101,7 @@ <h2 class="subtitle">Third party script used to verify games on crash game.</h2>
       <div class="field">
         <label class="label">Salt</label>
         <p class="control has-icons-left">
-          <input class="input" type="text" id="game_salt_input" placeholder="Salt" value="0000000000000000000e3a66df611d6935b30632f352e4934c21059696117f28">
+          <input class="input" type="text" id="game_salt_input" placeholder="Salt" value="0000000000000000000301e2801a9a9598bfb114e574a91a887f2132f33047e6">
           <span class="icon is-small is-left"><i class="fa fa-filter"></i></span>
         </p>
       </div>
@@ -216,8 +217,12 @@ <h2 class="subtitle">Third party script used to verify games on crash game.</h2>
         }
       };
       var hash_url = window.location.search
-      if ((/nosalt/).test(hash_url)) {
+      const query = new URLSearchParams(location.search);
+      const version = query.get('v');
+      if (version === 'v1') {
         $('#game_salt_input').val('');
+      } else if (version === 'v2') {
+        $('#game_salt_input').val('0000000000000000000301e2801a9a9598bfb114e574a91a887f2132f33047e6');
       }
       if ((/hash=/).test(hash_url)) {
         var hash = hash_url.match(/hash=[0-9a-zA-z]+/)[0].replace(/hash=/, '');
@@ -236,4 +241,4 @@ <h2 class="subtitle">Third party script used to verify games on crash game.</h2>
     </script>
 </body>
 
-</html>
\ No newline at end of file
+</html>
diff --git a/egyptianAdventure.pdf b/egyptianAdventure.pdf
new file mode 100644
index 0000000..8dfbfa1
Binary files /dev/null and b/egyptianAdventure.pdf differ
diff --git a/roulette.html b/roulette.html
index 40a32e5..f9dbdde 100644
--- a/roulette.html
+++ b/roulette.html
@@ -113,7 +113,7 @@ <h2 class="subtitle">Third party script used to verify games on roulette game.</
     </div>
   </section>
     <script type="text/javascript">
-      const SALT = '00000000000000000005bcf4bcfe3a699dd7833839e593127885e2b1e80ceb10';
+      const SALT = '0000000000000000000301e2801a9a9598bfb114e574a91a887f2132f33047e6';
       var isVerifying = false;
       $('#game_verify_submit').on('click', () => {
         if (isVerifying) return;
