diff --git a/cronjobs/pps_payout.php b/cronjobs/pps_payout.php
index 4b5a0e9e..d7036ee0 100755
--- a/cronjobs/pps_payout.php
+++ b/cronjobs/pps_payout.php
@@ -63,7 +63,7 @@ if ($config['pps']['reward']['type'] == 'blockavg' && $block->getBlockCount() >
 }
 
 // Per-share value to be paid out to users
-$pps_value = round($pps_reward / (pow(2, $config['target_bits']) * $dDifficulty), 12);
+$pps_value = round($pps_reward / (pow(2, $coin->getTargetBits()) * $dDifficulty), 12);
 
 // Find our last share accounted and last inserted share for PPS calculations
 if (!$iPreviousShareId = $setting->getValue('pps_last_share_id')) {
diff --git a/public/include/autoloader.inc.php b/public/include/autoloader.inc.php
index 7813b5d6..3091035c 100644
--- a/public/include/autoloader.inc.php
+++ b/public/include/autoloader.inc.php
@@ -2,13 +2,6 @@
 (SECURITY == "*)WT#&YHfd" && SECHASH_CHECK) ? die("public/index.php -> Set a new SECURITY value to continue") : 0;
 $defflip = (!cfip()) ? exit(header('HTTP/1.1 401 Unauthorized')) : 1;
 
-// SHA/Scrypt check
-if (empty($config['algorithm']) || $config['algorithm'] == 'scrypt') {
-  $config['target_bits'] = 16;
-} else {
-  $config['target_bits'] = 32;
-}
-
 // Default classes
 require_once(INCLUDE_DIR . '/lib/KLogger.php');
 require_once(CLASS_DIR . '/logger.class.php');
@@ -20,10 +13,20 @@ require_once(INCLUDE_DIR . '/database.inc.php');
 require_once(INCLUDE_DIR . '/config/memcache_keys.inc.php');
 require_once(INCLUDE_DIR . '/config/error_codes.inc.php');
 
-// We need to load these two first
+// We need to load these first
 require_once(CLASS_DIR . '/base.class.php');
+require_once(CLASS_DIR . '/coins/coin_base.class.php');
 require_once(CLASS_DIR . '/setting.class.php');
 
+// Now decide on which coin class to load and instantiate
+if (file_exists(CLASS_DIR . '/coins/coin_' . $config['algorithm'] . '.class.php')) {
+  require_once(CLASS_DIR . '/coins/coin_' . $config['algorithm'] . '.class.php');
+  $coin = new Coin();
+  $coin->setConfig($config);
+} else {
+  die('Unable to load your coins class definition for ' . $config['algorithm']);
+}
+
 // Detect device
 if ( PHP_SAPI == 'cli') {
   // Create a new compile folder just for crons
diff --git a/public/include/classes/base.class.php b/public/include/classes/base.class.php
index 34aa33cd..1bb27e3a 100644
--- a/public/include/classes/base.class.php
+++ b/public/include/classes/base.class.php
@@ -19,6 +19,9 @@ class Base {
   public function setDebug($debug) {
     $this->debug = $debug;
   }
+  public function setCoin($coin) {
+    $this->coin = $coin;
+  }
   public function setLog($log) {
     $this->log = $log;
   }
diff --git a/public/include/classes/coins/coin_base.class.php b/public/include/classes/coins/coin_base.class.php
new file mode 100644
index 00000000..79e74c58
--- /dev/null
+++ b/public/include/classes/coins/coin_base.class.php
@@ -0,0 +1,52 @@
+<?php
+$defflip = (!cfip()) ? exit(header('HTTP/1.1 401 Unauthorized')) : 1;
+
+
+/**
+ * Our coin base class that we extend our other coins from
+ *
+ * We are implementing all basic coin methods into this class but it
+ * must be extended for customized coins.
+ **/
+class CoinBase extends Base {
+  // Our coins target bits
+  protected $target_bits = NULL;
+
+  /**
+   * Read our target bits
+   **/
+  public function getTargetBits() {
+    return $this->target_bits;
+  }
+
+  /**
+   * Calculate our hashrate based on shares inserted to DB
+   * We use diff1 share values, not a baseline one
+   **/
+  public function calcHashrate($shares, $interval) {
+    return $shares * pow(2, $this->target_bits) / $interval / 1000;
+  }
+
+  /**
+   * Calculate estimated shares of this coin, this is using baseline
+   * according to our configuration difficulty
+   **/
+  public function calcEstaimtedShares($dDifficulty) {
+    return (int)round((pow(2, (32 - $this->target_bits)) * $dDifficulty) / pow(2, ($this->config['difficulty'] - 16)));
+  }
+
+  /**
+   * Calculate our networks expected time per block
+   **/
+  public function calcNetworkExpectedTimePerBlock($dDifficulty, $dNetworkHashrate) {
+    return pow(2, 32) * $dDifficulty / $dNetworkHashrate;
+  }
+  /**
+   * Calculate next expected difficulty based on current difficulty
+   **/
+  public function calcExpectedNextDifficulty($dDifficulty, $dNetworkHashrate) {
+    return round($dDifficulty * $this->config['cointarget'] / $this->calcNetworkExpectedTimePerBlock($dDifficulty, $dNetworkHashrate), 8);
+  }
+}
+
+?>
diff --git a/public/include/classes/coins/coin_scrypt.class.php b/public/include/classes/coins/coin_scrypt.class.php
new file mode 100644
index 00000000..bf829ab1
--- /dev/null
+++ b/public/include/classes/coins/coin_scrypt.class.php
@@ -0,0 +1,13 @@
+<?php
+$defflip = (!cfip()) ? exit(header('HTTP/1.1 401 Unauthorized')) : 1;
+
+/**
+ * We extend our CoinBase class
+ * No need to change anything, base class supports
+ * scrypt and sha256d
+ **/
+class Coin extends CoinBase {
+  protected $target_bits = 16;
+}
+
+?>
diff --git a/public/include/classes/coins/coin_sha256d.class.php b/public/include/classes/coins/coin_sha256d.class.php
new file mode 100644
index 00000000..1147770e
--- /dev/null
+++ b/public/include/classes/coins/coin_sha256d.class.php
@@ -0,0 +1,13 @@
+<?php
+$defflip = (!cfip()) ? exit(header('HTTP/1.1 401 Unauthorized')) : 1;
+
+/**
+ * We extend our CoinBase class
+ * No need to change anything, base class supports
+ * scrypt and sha256d
+ **/
+class Coin extends CoinBase {
+  protected $target_bits = 32;
+}
+
+?>
diff --git a/public/include/classes/statistics.class.php b/public/include/classes/statistics.class.php
index 786c00d1..b04bff4a 100644
--- a/public/include/classes/statistics.class.php
+++ b/public/include/classes/statistics.class.php
@@ -46,46 +46,48 @@ class Statistics extends Base {
         IFNULL(SUM(IF(confirmations = -1, 1, 0)), 0) AS TotalOrphan,
         IFNULL(SUM(IF(confirmations > 0, difficulty, 0)), 0) AS TotalDifficulty,
         IFNULL(ROUND(SUM(IF(confirmations > -1, shares, 0))), 0) AS TotalShares,
-        IFNULL(ROUND(SUM(IF(confirmations > -1, POW(2, ( 32 - " . $this->config['target_bits'] . " )) * difficulty / POW(2, (" . $this->config['difficulty'] . " -16)), 0))), 0) AS TotalEstimatedShares,
         IFNULL(SUM(IF(confirmations > -1, amount, 0)), 0) AS TotalAmount,
         IFNULL(SUM(IF(FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 3600 SECOND), 1, 0)), 0) AS 1HourTotal,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 3600 SECOND), 1, 0)), 0) AS 1HourValid,
         IFNULL(SUM(IF(confirmations = -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 3600 SECOND), 1, 0)), 0) AS 1HourOrphan,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 3600 SECOND), difficulty, 0)), 0) AS 1HourDifficulty,
         IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 3600 SECOND), shares, 0))), 0) AS 1HourShares,
-        IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 3600 SECOND), POW(2, ( 32 - " . $this->config['target_bits'] . " )) * difficulty / POW(2, (" . $this->config['difficulty'] . " -16)), 0))), 0) AS 1HourEstimatedShares,
         IFNULL(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 3600 SECOND), amount, 0)), 0) AS 1HourAmount,
         IFNULL(SUM(IF(FROM_UNIXTIME(time)    >= DATE_SUB(now(), INTERVAL 86400 SECOND), 1, 0)), 0) AS 24HourTotal,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 86400 SECOND), 1, 0)), 0) AS 24HourValid,
         IFNULL(SUM(IF(confirmations = -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 86400 SECOND), 1, 0)), 0) AS 24HourOrphan,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 86400 SECOND), difficulty, 0)), 0) AS 24HourDifficulty,
         IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 86400 SECOND), shares, 0))), 0) AS 24HourShares,
-        IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 86400 SECOND), POW(2, ( 32 - " . $this->config['target_bits'] . " )) * difficulty / POW(2, (" . $this->config['difficulty'] . " -16)), 0))), 0) AS 24HourEstimatedShares,
         IFNULL(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 86400 SECOND), amount, 0)), 0) AS 24HourAmount,
         IFNULL(SUM(IF(FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 604800 SECOND), 1, 0)), 0) AS 7DaysTotal,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 604800 SECOND), 1, 0)), 0) AS 7DaysValid,
         IFNULL(SUM(IF(confirmations = -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 604800 SECOND), 1, 0)), 0) AS 7DaysOrphan,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 604800 SECOND), difficulty, 0)), 0) AS 7DaysDifficulty,
         IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 604800 SECOND), shares, 0))), 0) AS 7DaysShares,
-        IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 604800 SECOND), POW(2, ( 32 - " . $this->config['target_bits'] . " )) * difficulty / POW(2, (" . $this->config['difficulty'] . " -16)), 0))), 0) AS 7DaysEstimatedShares,
         IFNULL(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 604800 SECOND), amount, 0)), 0) AS 7DaysAmount,
         IFNULL(SUM(IF(FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 2419200 SECOND), 1, 0)), 0) AS 4WeeksTotal,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 2419200 SECOND), 1, 0)), 0) AS 4WeeksValid,
         IFNULL(SUM(IF(confirmations = -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 2419200 SECOND), 1, 0)), 0) AS 4WeeksOrphan,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 2419200 SECOND), difficulty, 0)), 0) AS 4WeeksDifficulty,
         IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 2419200 SECOND), shares, 0))), 0) AS 4WeeksShares,
-        IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 2419200 SECOND), POW(2, ( 32 - " . $this->config['target_bits'] . " )) * difficulty / POW(2, (" . $this->config['difficulty'] . " -16)), 0))), 0) AS 4WeeksEstimatedShares,
         IFNULL(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 2419200 SECOND), amount, 0)), 0) AS 4WeeksAmount,
         IFNULL(SUM(IF(FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 29030400 SECOND), 1, 0)), 0) AS 12MonthTotal,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 29030400 SECOND), 1, 0)), 0) AS 12MonthValid,
         IFNULL(SUM(IF(confirmations = -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 29030400 SECOND), 1, 0)), 0) AS 12MonthOrphan,
         IFNULL(SUM(IF(confirmations > 0 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 29030400 SECOND), difficulty, 0)), 0) AS 12MonthDifficulty,
         IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 29030400 SECOND), shares, 0))), 0) AS 12MonthShares,
-        IFNULL(ROUND(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 29030400 SECOND), POW(2, ( 32 - " . $this->config['target_bits'] . " )) * difficulty / POW(2, (" . $this->config['difficulty'] . " -16)), 0))), 0) AS 12MonthEstimatedShares,
         IFNULL(SUM(IF(confirmations > -1 AND FROM_UNIXTIME(time) >= DATE_SUB(now(), INTERVAL 29030400 SECOND), amount, 0)), 0) AS 12MonthAmount
       FROM " . $this->block->getTableName());
-    if ($this->checkStmt($stmt) && $stmt->execute() && $result = $stmt->get_result())
-    	return $this->memcache->setCache(__FUNCTION__, $result->fetch_assoc());
+    if ($this->checkStmt($stmt) && $stmt->execute() && $result = $stmt->get_result()) {
+      $aData = $result->fetch_assoc();
+      $aData['TotalEstimatedShares'] = $this->coin->calcEstaimtedShares($aData['TotalDifficulty']);
+      $aData['1HourEstimatedShares'] = $this->coin->calcEstaimtedShares($aData['1HourDifficulty']);
+      $aData['24HourEstimatedShares'] = $this->coin->calcEstaimtedShares($aData['24HourDifficulty']);
+      $aData['7DaysEstimatedShares'] = $this->coin->calcEstaimtedShares($aData['7DaysDifficulty']);
+      $aData['4WeeksEstimatedShares'] = $this->coin->calcEstaimtedShares($aData['4WeeksDifficulty']);
+      $aData['12MonthEstimatedShares'] = $this->coin->calcEstaimtedShares($aData['12MonthDifficulty']);
+    	return $this->memcache->setCache(__FUNCTION__, $aData);
+    }
     return $this->sqlError();
   }
 
@@ -102,7 +104,7 @@ class Statistics extends Base {
         b.*,
         a.username AS finder,
         a.is_anonymous AS is_anonymous,
-        ROUND((difficulty * POW(2, 32 - " . $this->config['target_bits'] . ")) / POW(2, (" . $this->config['difficulty'] . " -16)), 0) AS estshares
+        ROUND((difficulty * POW(2, 32 - " . $this->coin->getTargetBits() . ")) / POW(2, (" . $this->config['difficulty'] . " -16)), 0) AS estshares
       FROM " . $this->block->getTableName() . " AS b
       LEFT JOIN " . $this->user->getTableName() . " AS a
       ON b.account_id = a.id
@@ -125,7 +127,7 @@ class Statistics extends Base {
         b.*,
         a.username AS finder,
         a.is_anonymous AS is_anonymous,
-        ROUND((difficulty * POW(2, 32 - " . $this->config['target_bits'] . ")) / POW(2, (" . $this->config['difficulty'] . " -16)), 0) AS estshares
+        ROUND((difficulty * POW(2, 32 - " . $this->coin->getTargetBits() . ")) / POW(2, (" . $this->config['difficulty'] . " -16)), 0) AS estshares
       FROM " . $this->block->getTableName() . " AS b
       LEFT JOIN " . $this->user->getTableName() . " AS a 
       ON b.account_id = a.id
@@ -221,19 +223,22 @@ class Statistics extends Base {
       SELECT
       (
         (
-          SELECT IFNULL(ROUND(SUM(IF(difficulty=0, POW(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / ? / 1000), 0) AS hashrate
+          SELECT IFNULL(ROUND(SUM(IF(difficulty=0, POW(2, (" . $this->config['difficulty'] . " - 16)), difficulty))), 0) AS shares
           FROM " . $this->share->getTableName() . "
           WHERE time > DATE_SUB(now(), INTERVAL ? SECOND)
           AND our_result = 'Y'
         ) + (
-          SELECT IFNULL(ROUND(SUM(IF(difficulty=0, POW(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / ? / 1000), 0) AS hashrate
+          SELECT IFNULL(ROUND(SUM(IF(difficulty=0, POW(2, (" . $this->config['difficulty'] . " - 16)), difficulty))), 0) AS shares
           FROM " . $this->share->getArchiveTableName() . "
           WHERE time > DATE_SUB(now(), INTERVAL ? SECOND)
           AND our_result = 'Y'
         )
-      ) AS hashrate
+      ) AS shares
       FROM DUAL");
-    if ($this->checkStmt($stmt) && $stmt->bind_param('iiii', $interval, $interval, $interval, $interval) && $stmt->execute() && $result = $stmt->get_result() ) return $this->memcache->setStaticCache(__FUNCTION__, $result->fetch_object()->hashrate);
+    if ($this->checkStmt($stmt) && $stmt->bind_param('ii', $interval, $interval) && $stmt->execute() && $result = $stmt->get_result() ) {
+      $hashrate = $this->coin->calcHashrate($result->fetch_object()->shares, $interval);
+      return $this->memcache->setStaticCache(__FUNCTION__, $hashrate);
+    }
     return $this->sqlError();
   }
 
@@ -446,7 +451,7 @@ class Statistics extends Base {
 
   /**
    * Fetch all user hashrates based on shares and archived shares
-   * @return data integer Current Hashrate in khash/s
+   * @return data array Set of all user stats
    **/
   public function getAllUserMiningStats($interval=180) {
     $this->debug->append("STA " . __METHOD__, 4);
@@ -454,7 +459,7 @@ class Statistics extends Base {
       SELECT
         a.id AS id,
         a.username AS account,
-        IFNULL(ROUND(SUM(t1.difficulty)  * POW(2, " . $this->config['target_bits'] . ") / ? / 1000, 2), 0) AS hashrate,
+        IFNULL(SUM(t1.difficulty), 0) AS shares,
         ROUND(COUNT(t1.id) / ?, 2) AS sharerate,
         IFNULL(AVG(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)), 0) AS avgsharediff
       FROM (
@@ -476,12 +481,13 @@ class Statistics extends Base {
       ON SUBSTRING_INDEX( t1.username, '.', 1 ) = a.username
       WHERE a.id IS NOT NULL
       GROUP BY account
-      ORDER BY hashrate DESC
+      ORDER BY shares DESC
       ");
-    if ($this->checkStmt($stmt) && $stmt->bind_param("iiii", $interval, $interval, $interval, $interval) && $stmt->execute() && $result = $stmt->get_result() ) {
+    if ($this->checkStmt($stmt) && $stmt->bind_param("iii", $interval, $interval, $interval) && $stmt->execute() && $result = $stmt->get_result() ) {
       $aData = array();
       while ($row = $result->fetch_assoc()) {
         $aData['data'][$row['id']] = $row;
+        $aData['data'][$row['id']]['hashrate'] = $this->coin->calcHashrate($row['shares'], $interval);
       }
       return $this->memcache->setStaticCache(STATISTICS_ALL_USER_HASHRATES, $aData, 600);
     } else {
@@ -527,7 +533,7 @@ class Statistics extends Base {
     $stmt = $this->mysqli->prepare("
       SELECT
         IFNULL(COUNT(*) / ?, 0) AS sharerate,
-        IFNULL(ROUND(SUM(difficulty)  * POW(2, " . $this->config['target_bits'] . ") / ? / 1000, 2), 0) AS hashrate,
+        IFNULL(SUM(difficulty), 0) AS shares,
         IFNULL(AVG(difficulty), 0) AS avgsharediff
       FROM (
         SELECT
@@ -547,27 +553,11 @@ class Statistics extends Base {
           AND our_result = 'Y'
       ) AS temp");
     $username = $username . ".%";
-    if ($this->checkStmt($stmt) && $stmt->bind_param("iisisi", $interval, $interval, $username, $interval, $username, $interval) && $stmt->execute() && $result = $stmt->get_result() )
-      return $this->memcache->setCache(__FUNCTION__ . $account_id, $result->fetch_assoc());
-    return $this->sqlError();
-  }
-
-  /**
-   * Get hashrate for a specific worker
-   * @param username string username
-   * @return data int Current hashrate in khash/s
-   **/
-  public function getWorkerHashrate($workername, $worker_id=NULL, $interval=180) {
-    $this->debug->append("STA " . __METHOD__, 4);
-    if ($data = $this->memcache->get(__FUNCTION__ . $worker_id)) return $data;
-    $stmt = $this->mysqli->prepare("
-      SELECT IFNULL(ROUND(SUM(IF(difficulty=0, POW(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / 600 / 1000), 0) AS hashrate
-      FROM " . $this->share->getTableName() . " AS
-      WHERE username = '?'
-        AND our_result = 'Y'
-        AND time > DATE_SUB(now(), INTERVAL ? SECOND)");
-    if ($this->checkStmt($stmt) && $stmt->bind_param("si", $workername, $interval) && $stmt->execute() && $result = $stmt->get_result())
-      return $this->memcache->setCache(__FUNCTION__ . $worker_id, (float)$result->fetch_object()->hashrate);
+    if ($this->checkStmt($stmt) && $stmt->bind_param("isisi", $interval, $username, $interval, $username, $interval) && $stmt->execute() && $result = $stmt->get_result() ) {
+      $aData = $result->fetch_assoc();
+      $aData['hashrate'] = $this->coin->calcHashrate($aData['shares'], $interval);
+      return $this->memcache->setCache(__FUNCTION__ . $account_id, $aData);
+    }
     return $this->sqlError();
   }
 
@@ -633,7 +623,7 @@ class Statistics extends Base {
           a.username AS account,
           a.donate_percent AS donate_percent,
           a.is_anonymous AS is_anonymous,
-          IFNULL(ROUND(SUM(t1.difficulty)  * POW(2, " . $this->config['target_bits'] . ") / 600 / 1000, 2), 0) AS hashrate
+          IFNULL(SUM(t1.difficulty), 0) AS shares
         FROM
         (
           SELECT id, IFNULL(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty), 0) AS difficulty, username FROM " . $this->share->getTableName() . " WHERE time > DATE_SUB(now(), INTERVAL 10 MINUTE) AND our_result = 'Y'
@@ -643,9 +633,17 @@ class Statistics extends Base {
         LEFT JOIN " . $this->user->getTableName() . " AS a
         ON SUBSTRING_INDEX( t1.username, '.', 1 ) = a.username
         GROUP BY account
-        ORDER BY hashrate DESC LIMIT ?");
-      if ($this->checkStmt($stmt) && $stmt->bind_param("i", $limit) && $stmt->execute() && $result = $stmt->get_result())
-        return $this->memcache->setStaticCache(__FUNCTION__ . $type . $limit, $result->fetch_all(MYSQLI_ASSOC));
+        ORDER BY shares DESC LIMIT ?");
+      if ($this->checkStmt($stmt) && $stmt->bind_param("i", $limit) && $stmt->execute() && $result = $stmt->get_result()) {
+        $aData = array();
+        $count = 0;
+        while ($row = $result->fetch_assoc()) {
+          $aData[$count] = $row;
+          $aData[$count]['hashrate'] = $this->coin->calcHashrate($row['shares'], 600);
+          $count++;
+        }
+        return $this->memcache->setStaticCache(__FUNCTION__ . $type . $limit, $aData);
+      }
       return $this->sqlError();
       break;
     }
@@ -663,7 +661,7 @@ class Statistics extends Base {
     $stmt = $this->mysqli->prepare("
       SELECT
         id,
-        IFNULL(ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / 3600 / 1000), 0) AS hashrate,
+        IFNULL(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)), 0) AS shares,
         HOUR(time) AS hour
       FROM " . $this->share->getTableName() . "
       WHERE time <= FROM_UNIXTIME(FLOOR(UNIX_TIMESTAMP(NOW())/(60*60))*(60*60))
@@ -674,7 +672,7 @@ class Statistics extends Base {
       UNION
       SELECT
         share_id,
-        IFNULL(ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / 3600 / 1000), 0) AS hashrate,
+        IFNULL(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)), 0) AS shares,
         HOUR(time) AS hour
       FROM " . $this->share->getArchiveTableName() . "
       WHERE time <= FROM_UNIXTIME(FLOOR(UNIX_TIMESTAMP(NOW())/(60*60))*(60*60))
@@ -688,7 +686,7 @@ class Statistics extends Base {
       // Initilize array
       for ($i = 0; $i < 24; $i++) $aData[($iStartHour + $i) % 24] = 0;
       // Fill data
-      while ($row = $result->fetch_assoc()) $aData[$row['hour']] += $row['hashrate'];
+      while ($row = $result->fetch_assoc()) $aData[$row['hour']] += (int) $this->coin->calcHashrate($row['shares'], 3600);
       return $this->memcache->setCache(__FUNCTION__ . $account_id, $aData);
     }
     return $this->sqlError();
@@ -705,7 +703,7 @@ class Statistics extends Base {
     $stmt = $this->mysqli->prepare("
       SELECT
         id,
-      	IFNULL(ROUND(SUM(IF(s.difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), s.difficulty)) * POW(2, " . $this->config['target_bits'] . ") / 3600 / 1000), 0) AS hashrate,
+      	IFNULL(SUM(IF(s.difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), s.difficulty)), 0) AS shares,
         HOUR(s.time) AS hour
       FROM " . $this->share->getTableName() . " AS s
       WHERE time <= FROM_UNIXTIME(FLOOR(UNIX_TIMESTAMP(NOW())/(60*60))*(60*60))
@@ -715,7 +713,7 @@ class Statistics extends Base {
       UNION
       SELECT
         share_id,
-        IFNULL(ROUND(SUM(IF(s.difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), s.difficulty)) * POW(2, " . $this->config['target_bits'] . ") / 3600 / 1000), 0) AS hashrate,
+      	IFNULL(SUM(IF(s.difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), s.difficulty)), 0) AS shares,
         HOUR(s.time) AS hour
       FROM " . $this->share->getArchiveTableName() . " AS s
       WHERE time <= FROM_UNIXTIME(FLOOR(UNIX_TIMESTAMP(NOW())/(60*60))*(60*60))
@@ -727,7 +725,7 @@ class Statistics extends Base {
       // Initilize array
       for ($i = 0; $i < 24; $i++) $aData[($iStartHour + $i) % 24] = 0;
       // Fill data
-      while ($row = $result->fetch_assoc()) $aData[$row['hour']] += (int) $row['hashrate'];
+      while ($row = $result->fetch_assoc()) $aData[$row['hour']] += (int) $this->coin->calcHashrate($row['shares'], 3600);
       return $this->memcache->setCache(__FUNCTION__, $aData);
     }
     return $this->sqlError();
@@ -788,17 +786,19 @@ class Statistics extends Base {
     $this->debug->append("STA " . __METHOD__, 4);
     if ($data = $this->memcache->get(__FUNCTION__ . $hour)) return $data;
     $stmt = $this->mysqli->prepare("
-      SELECT 
-      IFNULL(COUNT(id), 0) as count, 
+      SELECT
+      IFNULL(COUNT(id), 0) as count,
       IFNULL(AVG(difficulty), 0) as average,
-      IFNULL(ROUND(SUM((POW(2, ( 32 - " . $this->config['target_bits'] . " )) * difficulty) / POW(2, (" . $this->config['difficulty'] . " -16))), 0), 0) AS expected,
       IFNULL(ROUND(SUM(shares)), 0) as shares,
-      IFNULL(SUM(amount), 0) as rewards 
+      IFNULL(SUM(amount), 0) as rewards
       FROM " . $this->block->getTableName() . "
       WHERE FROM_UNIXTIME(time) > DATE_SUB(now(), INTERVAL ? HOUR)
       AND confirmations >= 1");
-    if ($this->checkStmt($stmt) && $stmt->bind_param("i", $hour) && $stmt->execute() && $result = $stmt->get_result())
-      return $this->memcache->setCache(__FUNCTION__ . $hour, $result->fetch_assoc());
+    if ($this->checkStmt($stmt) && $stmt->bind_param("i", $hour) && $stmt->execute() && $result = $stmt->get_result()) {
+      $aData = $result->fetch_assoc();
+      $aData['expected'] = $this->coin->calcEstaimtedShares($aData['average']);
+      return $this->memcache->setCache(__FUNCTION__ . $hour, $aData);
+    }
     return $this->sqlError();
   }
 
@@ -808,7 +808,7 @@ class Statistics extends Base {
    * @return shares integer Share count
    **/
   public function getEstimatedShares($dDiff) {
-    return round((POW(2, (32 - $this->config['target_bits'])) * $dDiff) / pow(2, ($this->config['difficulty'] - 16)));
+    return $this->coin->calcEstaimtedShares($dDiff);
   }
 
   /**
@@ -829,7 +829,7 @@ class Statistics extends Base {
       return $this->memcache->setCache(__FUNCTION__, $this->config['cointarget']);
     }
 
-    return $this->memcache->setCache(__FUNCTION__, pow(2, 32) * $dDifficulty / $dNetworkHashrate);
+    return $this->memcache->setCache(__FUNCTION__, $this->coin->calcNetworkExpectedTimePerBlock($dDifficulty, $dNetworkHashrate));
   }
 
   /**
@@ -841,11 +841,13 @@ class Statistics extends Base {
 
     if ($this->bitcoin->can_connect() === true) {
       $dDifficulty = $this->bitcoin->getdifficulty();
+      $dNetworkHashrate = $this->bitcoin->getnetworkhashps();
     } else {
       $dDifficulty = 1;
+      $dNetworkHashrate = 1;
     }
 
-    return $this->memcache->setCache(__FUNCTION__, round($dDifficulty * $this->config['cointarget'] / $this->getNetworkExpectedTimePerBlock(), 8));
+    return $this->memcache->setCache(__FUNCTION__, $this->coin->calcExpectedNextDifficulty($dDifficulty, $dNetworkHashrate));
   }
 
   /**
@@ -890,7 +892,7 @@ class Statistics extends Base {
         $pps_reward = $this->config['pps']['reward']['default'];
       }
     }
-    return round($pps_reward / (pow(2, $this->config['target_bits']) * $dDifficulty), 12);
+    return round($pps_reward / (pow(2, $this->coin->getTargetBits()) * $dDifficulty), 12);
   }
 
   /**
@@ -922,5 +924,5 @@ $statistics->setMemcache($memcache);
 $statistics->setConfig($config);
 $statistics->setBitcoin($bitcoin);
 $statistics->setErrorCodes($aErrorCodes);
-
+$statistics->setCoin($coin);
 ?>
diff --git a/public/include/classes/worker.class.php b/public/include/classes/worker.class.php
index b661bd22..9b7344ac 100644
--- a/public/include/classes/worker.class.php
+++ b/public/include/classes/worker.class.php
@@ -74,14 +74,14 @@ class Worker extends Base {
        ( SELECT COUNT(id) FROM " . $this->share->getArchiveTableName() . " WHERE username = w.username AND time > DATE_SUB(now(), INTERVAL ? SECOND)) AS count_all_archive,
        (
          SELECT
-          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / ? / 1000), 0), 0) AS hashrate
+          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->coin->getTargetBits() . ") / ? / 1000), 0), 0) AS hashrate
           FROM " . $this->share->getTableName() . "
           WHERE
             username = w.username
           AND time > DATE_SUB(now(), INTERVAL ? SECOND)
         ) + (
          SELECT
-          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / ? / 1000), 0), 0) AS hashrate
+          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->coin->getTargetBits() . ") / ? / 1000), 0), 0) AS hashrate
           FROM " . $this->share->getArchiveTableName() . "
           WHERE
             username = w.username
@@ -117,14 +117,14 @@ class Worker extends Base {
        ( SELECT COUNT(id) FROM " . $this->share->getArchiveTableName() . " WHERE username = w.username AND time > DATE_SUB(now(), INTERVAL ? SECOND)) AS count_all_archive,
        (
          SELECT
-          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / ? / 1000), 0), 0) AS hashrate
+          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->coin->getTargetBits() . ") / ? / 1000), 0), 0) AS hashrate
           FROM " . $this->share->getTableName() . "
           WHERE
             username = w.username
           AND time > DATE_SUB(now(), INTERVAL ? SECOND)
       ) + (
         SELECT
-          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / ? / 1000), 0), 0) AS hashrate
+          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->coin->getTargetBits() . ") / ? / 1000), 0), 0) AS hashrate
           FROM " . $this->share->getArchiveTableName() . "
           WHERE
             username = w.username
@@ -158,14 +158,14 @@ class Worker extends Base {
       IFNULL(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty), 0) AS difficulty,
        (
          SELECT
-          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / ? / 1000), 0), 0) AS hashrate
+          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->coin->getTargetBits() . ") / ? / 1000), 0), 0) AS hashrate
           FROM " . $this->share->getTableName() . "
           WHERE
             username = w.username
           AND time > DATE_SUB(now(), INTERVAL ? SECOND)
       ) + (
         SELECT
-          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->config['target_bits'] . ") / ? / 1000), 0), 0) AS hashrate
+          IFNULL(IF(our_result='Y', ROUND(SUM(IF(difficulty=0, pow(2, (" . $this->config['difficulty'] . " - 16)), difficulty)) * POW(2, " . $this->coin->getTargetBits() . ") / ? / 1000), 0), 0) AS hashrate
           FROM " . $this->share->getArchiveTableName() . "
           WHERE
             username = w.username
@@ -272,5 +272,5 @@ $worker->setShare($share);
 $worker->setConfig($config);
 $worker->setUser($user);
 $worker->setErrorCodes($aErrorCodes);
-
+$worker->setCoin($coin);
 ?>
diff --git a/public/include/pages/api/getdashboarddata.inc.php b/public/include/pages/api/getdashboarddata.inc.php
index db70772a..b4b3575b 100644
--- a/public/include/pages/api/getdashboarddata.inc.php
+++ b/public/include/pages/api/getdashboarddata.inc.php
@@ -98,7 +98,7 @@ $data = array(
     'shares' => array( 'valid' => $aRoundShares['valid'], 'invalid' => $aRoundShares['invalid'], 'invalid_percent' => $dPoolInvalidPercent, 'estimated' => $iEstShares, 'progress' => $dEstPercent ),
     'price' => $aPrice,
     'difficulty' => pow(2, $config['difficulty'] - 16),
-    'target_bits' => $config['difficulty']
+    'target_bits' => $coin->getTargetBits()
   ),
   'system' => array( 'load' => sys_getloadavg() ),
   'network' => array( 'hashrate' => $dNetworkHashrateAdjusted, 'difficulty' => $dDifficulty, 'block' => $iBlock, 'esttimeperblock' => round($dExpectedTimePerBlock ,2), 'nextdifficulty' => $dEstNextDifficulty, 'blocksuntildiffchange' => $iBlocksUntilDiffChange ),
diff --git a/public/include/smarty_globals.inc.php b/public/include/smarty_globals.inc.php
index 3befa0e5..e11fdea4 100644
--- a/public/include/smarty_globals.inc.php
+++ b/public/include/smarty_globals.inc.php
@@ -75,7 +75,7 @@ $aGlobal = array(
     'disable_contactform' => $setting->getValue('disable_contactform'),
     'disable_contactform_guest' => $setting->getValue('disable_contactform_guest'),
     'algorithm' => $config['algorithm'],
-    'target_bits' => $config['target_bits'],
+    'target_bits' => $coin->getTargetBits(),
     'accounts' => $config['accounts'],
     'disable_invitations' => $setting->getValue('disable_invitations'),
     'disable_notifications' => $setting->getValue('disable_notifications'),