diff --git a/include/autoloader.inc.php b/include/autoloader.inc.php
index 4d14e17e5..eb44f86f0 100644
--- a/include/autoloader.inc.php
+++ b/include/autoloader.inc.php
@@ -16,6 +16,7 @@
 // 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 . '/coin_address.class.php');
 require_once(CLASS_DIR . '/setting.class.php');
 require_once(INCLUDE_DIR . '/version.inc.php');
 if (PHP_OS == 'WINNT') require_once(CLASS_DIR . '/memcached.class.php');
diff --git a/include/classes/base.class.php b/include/classes/base.class.php
index 1bb27e3ac..d9f950add 100644
--- a/include/classes/base.class.php
+++ b/include/classes/base.class.php
@@ -22,6 +22,9 @@ public function setDebug($debug) {
   public function setCoin($coin) {
     $this->coin = $coin;
   }
+  public function setCoinAddress($coin_address) {
+    $this->coin_address = $coin_address;
+  }
   public function setLog($log) {
     $this->log = $log;
   }
diff --git a/include/classes/coin_address.class.php b/include/classes/coin_address.class.php
new file mode 100644
index 000000000..e5f108ac8
--- /dev/null
+++ b/include/classes/coin_address.class.php
@@ -0,0 +1,92 @@
+<?php
+$defflip = (!cfip()) ? exit(header('HTTP/1.1 401 Unauthorized')) : 1;
+
+class CoinAddress extends Base {
+  protected $table = 'coin_addresses';
+  private $cache = array();
+
+  /**
+   * Fetch users coin address for a currency
+   * @param userID int UserID
+   * @return data string Coin Address
+   **/
+  public function getCoinAddress($userID, $currency=NULL) {
+    if ($currency === NULL) $currency = $this->config['currency'];
+    $this->debug->append("STA " . __METHOD__, 4);
+    $stmt = $this->mysqli->prepare("
+      SELECT coin_address
+      FROM " . $this->getTableName() . "
+      WHERE account_id = ? AND currency = ?
+      ");
+    if ( $this->checkStmt($stmt) && $stmt->bind_param('is', $userID, $currency) && $stmt->execute() && $result = $stmt->get_result()) {
+      if ($result->num_rows == 1) {
+        return $result->fetch_object()->coin_address;
+      }
+    }
+    $this->debug->append("Unable to fetch users coin address for " . $currency);
+    return $this->sqlError();
+  }
+
+  /**
+   * Check if a coin address is already set
+   * @param address string Coin Address to check for
+   * @return bool true or false
+   **/
+  public function existsCoinAddress($address) {
+    $this->debug->append("STA " . __METHOD__, 4);
+    return $this->getSingle($address, 'coin_address', 'coin_address', 's') === $address;
+  }
+
+  /**
+   * Add a new coin address record for a user
+   * @param userID int Account ID
+   * @param address string Coin Address
+   * @param currency string Currency short handle, defaults to config option
+   * @return bool true or false
+   **/
+  public function add($userID, $address, $currency=NULL) {
+    if ($currency === NULL) $currency = $this->config['currency'];
+    if ($address != $this->getCoinAddress($userID) && $this->existsCoinAddress($address)) {
+      $this->setErrorMessage('Unable to update coin address, address already exists');
+      return false;
+    }
+    $stmt = $this->mysqli->prepare("INSERT INTO " . $this->getTableName() . " (account_id, currency, coin_address) VALUES (?, ?, ?)");
+    if ( $this->checkStmt($stmt) && $stmt->bind_param('sis', $userID, $currency, $address) && $stmt->execute()) {
+      return true;
+    }
+    return $this->sqlError();
+  }
+
+  /**
+   * Update a coin address record for a user and a currency
+   * @param userID int Account ID
+   * @param address string Coin Address
+   * @param currency string Currency short handle, defaults to config option
+   * @return bool true or false
+   **/
+  public function update($userID, $address, $currency=NULL) {
+    if ($currency === NULL) $currency = $this->config['currency'];
+    if ($address != $this->getCoinAddress($userID) && $this->existsCoinAddress($address)) {
+      $this->setErrorMessage('Unable to update coin address, address already exists');
+      return false;
+    }
+    if ($this->getCoinAddress($userID) != NULL) {
+      $stmt = $this->mysqli->prepare("UPDATE " . $this->getTableName() . " SET coin_address = ? WHERE account_id = ? AND currency = ?");
+      if ( $this->checkStmt($stmt) && $stmt->bind_param('sis', $address, $userID, $currency) && $stmt->execute()) {
+        return true;
+      }
+    } else {
+      $stmt = $this->mysqli->prepare("INSERT INTO " . $this->getTableName() . " (coin_address, account_id, currency) VALUES (?, ?, ?)");
+      if ( $this->checkStmt($stmt) && $stmt->bind_param('sis', $address, $userID, $currency) && $stmt->execute()) {
+        return true;
+      }
+    }
+    return $this->sqlError();
+  }
+}
+
+$coin_address = new CoinAddress();
+$coin_address->setDebug($debug);
+$coin_address->setConfig($config);
+$coin_address->setMysql($mysqli);
+$coin_address->setErrorCodes($aErrorCodes);
diff --git a/include/classes/transaction.class.php b/include/classes/transaction.class.php
index d01b53e34..8920419b1 100644
--- a/include/classes/transaction.class.php
+++ b/include/classes/transaction.class.php
@@ -355,7 +355,7 @@ public function getAPQueue($limit=250) {
         a.id,
         a.username,
         a.ap_threshold,
-        a.coin_address,
+        ca.coin_address,
         IFNULL(
           ROUND(
             (
@@ -370,11 +370,13 @@ public function getAPQueue($limit=250) {
       ON t.block_id = b.id
       LEFT JOIN " . $this->user->getTableName() . " AS a
       ON t.account_id = a.id
-      WHERE t.archived = 0 AND a.ap_threshold > 0 AND a.coin_address IS NOT NULL AND a.coin_address != ''
+      LEFT JOIN " . $this->coin_address->getTableName() . " AS ca
+      ON ca.account_id = a.id
+      WHERE t.archived = 0 AND a.ap_threshold > 0 AND ca.coin_address IS NOT NULL AND ca.coin_address != '' AND ca.currency = ?
       GROUP BY t.account_id
       HAVING confirmed > a.ap_threshold AND confirmed > " . $this->config['txfee_auto'] . "
       LIMIT ?");
-    if ($this->checkStmt($stmt) && $stmt->bind_param('i', $limit) && $stmt->execute() && $result = $stmt->get_result())
+    if ($this->checkStmt($stmt) && $stmt->bind_param('si', $this->config['currency'], $limit) && $stmt->execute() && $result = $stmt->get_result())
       return $result->fetch_all(MYSQLI_ASSOC);
     return $this->sqlError();
   }
@@ -446,7 +448,7 @@ public function getMPQueue($limit=250) {
       a.id,
       a.username,
       a.ap_threshold,
-      a.coin_address,
+      ca.coin_address,
       p.id AS payout_id,
       IFNULL(
         ROUND(
@@ -464,11 +466,13 @@ public function getMPQueue($limit=250) {
       ON t.account_id = p.account_id
       LEFT JOIN " . $this->block->getTableName() . " AS b
       ON t.block_id = b.id
-      WHERE p.completed = 0 AND t.archived = 0 AND a.coin_address IS NOT NULL AND a.coin_address != ''
+      LEFT JOIN " . $this->coin_address->getTableName() . " AS ca
+      ON ca.account_id = a.id
+      WHERE p.completed = 0 AND t.archived = 0 AND ca.currency = ? AND ca.coin_address IS NOT NULL AND ca.coin_address != ''
       GROUP BY t.account_id
       HAVING confirmed > " . $this->config['txfee_manual'] . "
       LIMIT ?");
-    if ($this->checkStmt($stmt) && $stmt->bind_param('i', $limit) && $stmt->execute() && $result = $stmt->get_result())
+    if ($this->checkStmt($stmt) && $stmt->bind_param('si', $this->config['currency'], $limit) && $stmt->execute() && $result = $stmt->get_result())
       return $result->fetch_all(MYSQLI_ASSOC);
     return $this->sqlError('E0050');
   }
@@ -478,6 +482,7 @@ public function getMPQueue($limit=250) {
 $transaction->setMemcache($memcache);
 $transaction->setNotification($notification);
 $transaction->setDebug($debug);
+$transaction->setCoinAddress($coin_address);
 $transaction->setMysql($mysqli);
 $transaction->setConfig($config);
 $transaction->setBlock($block);
diff --git a/include/classes/user.class.php b/include/classes/user.class.php
index 7cb0d58bd..5e59b8534 100644
--- a/include/classes/user.class.php
+++ b/include/classes/user.class.php
@@ -163,7 +163,7 @@ public function getTopInviters($limit=10,$start=0) {
     $invitation->setDebug($this->debug);
     $invitation->setLog($this->log);
     $stmt = $this->mysqli->prepare("
-    	SELECT COUNT(i.account_id) AS invitationcount,a.id,a.username,a.email,    	
+    	SELECT COUNT(i.account_id) AS invitationcount,a.id,a.username,a.email,
     	(SELECT COUNT(account_id) FROM " . $invitation->getTableName() . " WHERE account_id = i.account_id AND is_activated = 1 GROUP BY account_id) AS activated
     	FROM " . $invitation->getTableName() . " AS i
     	LEFT JOIN " . $this->getTableName() . " AS a
@@ -340,38 +340,20 @@ public function getAllAutoPayout() {
     $this->debug->append("STA " . __METHOD__, 4);
     $stmt = $this->mysqli->prepare("
       SELECT
-        id, username, coin_address, ap_threshold
-      FROM " . $this->getTableName() . "
-      WHERE ap_threshold > 0
-      AND coin_address IS NOT NULL
+        a.id, a.username, ca.coin_address AS coin_address, a.ap_threshold
+      FROM " . $this->getTableName() . " AS a
+      LEFT JOIN " . $this->coin_address->getTableName() . " AS ca
+      ON a.id = ca.account_id
+      WHERE ap_threshold > 0 AND ca.currency = ?
+      AND ca.coin_address IS NOT NULL
       ");
-    if ( $this->checkStmt($stmt) && $stmt->execute() && $result = $stmt->get_result()) {
+    if ( $this->checkStmt($stmt) && $stmt->bind_param('s', $this->config['currency']) && $stmt->execute() && $result = $stmt->get_result()) {
       return $result->fetch_all(MYSQLI_ASSOC);
     }
     $this->debug->append("Unable to fetch users with AP set");
     return false;
   }
 
-  /**
-   * Fetch users coin address
-   * @param userID int UserID
-   * @return data string Coin Address
-   **/
-  public function getCoinAddress($userID) {
-    $this->debug->append("STA " . __METHOD__, 4);
-    return $this->getSingle($userID, 'coin_address', 'id');
-  }
-
-  /**
-   * Check if a coin address exists already
-   * @param address string Coin Address
-   * @return bool True of false
-   **/
-  public function existsCoinAddress($address) {
-    $this->debug->append("STA " . __METHOD__, 4);
-    return $this->getSingle($address, 'coin_address', 'coin_address', 's') === $address;
-  }
-
   /**
    * Fetch users donation value 
    * @param userID int UserID
@@ -519,7 +501,7 @@ public function updateAccount($userID, $address, $threshold, $donate, $email, $t
       return false;
     }
     if (!empty($address)) {
-      if ($address != $this->getCoinAddress($userID) && $this->existsCoinAddress($address)) {
+      if ($address != $this->coin_address->getCoinAddress($userID) && $this->coin_address->existsCoinAddress($address)) {
         $this->setErrorMessage('Address is already in use');
         return false;
       }
@@ -559,10 +541,12 @@ public function updateAccount($userID, $address, $threshold, $donate, $email, $t
     }
 
     // We passed all validation checks so update the account
-    $stmt = $this->mysqli->prepare("UPDATE $this->table SET coin_address = ?, ap_threshold = ?, donate_percent = ?, email = ?, timezone = ?, is_anonymous = ? WHERE id = ?");
-    if ($this->checkStmt($stmt) && $stmt->bind_param('sddssii', $address, $threshold, $donate, $email, $timezone, $is_anonymous, $userID) && $stmt->execute()) {
+    $stmt = $this->mysqli->prepare("UPDATE $this->table SET ap_threshold = ?, donate_percent = ?, email = ?, timezone = ?, is_anonymous = ? WHERE id = ?");
+    if ($this->checkStmt($stmt) && $stmt->bind_param('ddssii', $threshold, $donate, $email, $timezone, $is_anonymous, $userID) && $stmt->execute()) {
       $this->log->log("info", $this->getUserName($userID)." updated their account details");
-      return true;
+      // Update coin address too
+      if ($this->coin_address->update($userID, $address))
+        return true;
     }
     // Catchall
     $this->setErrorMessage('Failed to update your account');
@@ -703,22 +687,18 @@ public function getUserData($userID) {
     $this->debug->append("Fetching user information for user id: $userID");
     $stmt = $this->mysqli->prepare("
       SELECT
-      id, username, pin, api_key, is_admin, is_anonymous, email, timezone, no_fees,
-      IFNULL(donate_percent, '0') as donate_percent, coin_address, ap_threshold
-      FROM $this->table
+      id AS id, username, pin, api_key, is_admin, is_anonymous, email, timezone, no_fees,
+      IFNULL(donate_percent, '0') as donate_percent, ap_threshold
+      FROM " . $this->getTableName() . "
       WHERE id = ? LIMIT 0,1");
-    if ($this->checkStmt($stmt)) {
-      $stmt->bind_param('i', $userID);
-      if (!$stmt->execute()) {
-        $this->debug->append('Failed to execute statement');
-        return false;
-      }
-      $result = $stmt->get_result();
+    if ($this->checkStmt($stmt) && $stmt->bind_param('i', $userID) && $stmt->execute() && $result = $stmt->get_result()) {
+      $aData = $result->fetch_assoc();
+      $aData['coin_address'] = $this->coin_address->getCoinAddress($userID);
       $stmt->close();
-      return $result->fetch_assoc();
+      return $aData;
     }
     $this->debug->append("Failed to fetch user information for $userID");
-    return false;
+    return $this->sqlError();
   }
 
   /**
@@ -742,6 +722,10 @@ public function register($username, $coinaddress, $password1, $password2, $pin,
       return false;
     }
     if (!is_null($coinaddress)) {
+      if ($this->coin_address->existsCoinAddress($coinaddress)) {
+        $this->setErrorMessage('Coin address is already taken');
+        return false;
+      }
       if (!$this->bitcoin->validateaddress($coinaddress)) {
         $this->setErrorMessage('Coin address is not valid');
         return false;
@@ -755,7 +739,7 @@ public function register($username, $coinaddress, $password1, $password2, $pin,
       $this->setErrorMessage( 'This e-mail address is already taken' );
       return false;
     }
-    if (strlen($password1) < 8) { 
+    if (strlen($password1) < 8) {
       $this->setErrorMessage( 'Password is too short, minimum of 8 characters required' );
       return false;
     }
@@ -801,15 +785,15 @@ public function register($username, $coinaddress, $password1, $password2, $pin,
       ! $this->setting->getValue('accounts_confirm_email_disabled') ? $is_locked = 1 : $is_locked = 0;
       $is_admin = 0;
       $stmt = $this->mysqli->prepare("
-        INSERT INTO $this->table (username, pass, email, signup_timestamp, pin, api_key, is_locked, coin_address)
-        VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+        INSERT INTO $this->table (username, pass, email, signup_timestamp, pin, api_key, is_locked)
+        VALUES (?, ?, ?, ?, ?, ?, ?)
         ");
     } else {
       $is_locked = 0;
       $is_admin = 1;
       $stmt = $this->mysqli->prepare("
-        INSERT INTO $this->table (username, pass, email, signup_timestamp, pin, api_key, is_admin, is_locked, coin_address)
-        VALUES (?, ?, ?, ?, ?, ?, 1, ?, ?)
+        INSERT INTO $this->table (username, pass, email, signup_timestamp, pin, api_key, is_admin, is_locked)
+        VALUES (?, ?, ?, ?, ?, ?, 1, ?)
         ");
     }
 
@@ -820,7 +804,9 @@ public function register($username, $coinaddress, $password1, $password2, $pin,
     $username_clean = strip_tags($username);
     $signup_time = time();
 
-    if ($this->checkStmt($stmt) && $stmt->bind_param('sssissis', $username_clean, $password_hash, $email1, $signup_time, $pin_hash, $apikey_hash, $is_locked, $coinaddress) && $stmt->execute()) {
+    if ($this->checkStmt($stmt) && $stmt->bind_param('sssissi', $username_clean, $password_hash, $email1, $signup_time, $pin_hash, $apikey_hash, $is_locked) && $stmt->execute()) {
+      $new_account_id = $this->mysqli->insert_id;
+      if (!is_null($coinaddress)) $this->coin_address->add($new_account_id, $coinaddress);
       if (! $this->setting->getValue('accounts_confirm_email_disabled') && $is_admin != 1) {
         if ($token = $this->token->createToken('confirm_email', $stmt->insert_id)) {
           $aData['username'] = $username_clean;
@@ -843,7 +829,8 @@ public function register($username, $coinaddress, $password1, $password2, $pin,
     } else {
       $this->setErrorMessage( 'Unable to register' );
       $this->debug->append('Failed to insert user into DB: ' . $this->mysqli->error);
-      if ($stmt->sqlstate == '23000') $this->setErrorMessage( 'Username, email or Coinaddress already registered' );
+      echo $this->mysqli->error;
+      if ($stmt->sqlstate == '23000') $this->setErrorMessage( 'Username or email already registered' );
       return false;
     }
     return false;
@@ -997,4 +984,5 @@ public function getCurrentIP($trustremote=false, $checkcloudflare=true, $checkcl
 $user->setToken($oToken);
 $user->setBitcoin($bitcoin);
 $user->setSetting($setting);
+$user->setCoinAddress($coin_address);
 $user->setErrorCodes($aErrorCodes);
diff --git a/include/pages/account/edit.inc.php b/include/pages/account/edit.inc.php
index 78782ad4e..234f68d6d 100644
--- a/include/pages/account/edit.inc.php
+++ b/include/pages/account/edit.inc.php
@@ -104,7 +104,7 @@
             $_SESSION['POPUP'][] = array('CONTENT' => 'You have not yet unlocked account withdrawls.', 'TYPE' => 'alert alert-danger');
           } else if ($aBalance['confirmed'] < $config['mp_threshold']) {
             $_SESSION['POPUP'][] = array('CONTENT' => 'Payout must be greater or equal than ' . $config['mp_threshold'] . '.', 'TYPE' => 'info');
-          } else if (!$user->getCoinAddress($_SESSION['USERDATA']['id'])) {
+          } else if (!$coin_address->getCoinAddress($_SESSION['USERDATA']['id'])) {
             $_SESSION['POPUP'][] = array('CONTENT' => 'You have no payout address set.', 'TYPE' => 'alert alert-danger');
         	} else {
         	  $user->log->log("info", $_SESSION['USERDATA']['username']." requesting manual payout");
diff --git a/include/pages/account/workers.inc.php b/include/pages/account/workers.inc.php
index eeb9fb267..a672e11c0 100644
--- a/include/pages/account/workers.inc.php
+++ b/include/pages/account/workers.inc.php
@@ -4,12 +4,10 @@
 if ($user->isAuthenticated()) {
 
 
-  if (!$user->getCoinAddress($_SESSION['USERDATA']['id']) AND $setting->getValue('disable_worker_edit')) {
-  
+  if (!$coin_address->getCoinAddress($_SESSION['USERDATA']['id']) AND $setting->getValue('disable_worker_edit')) {
     $_SESSION['POPUP'][] = array('CONTENT' => 'You have no payout address set.', 'TYPE' => 'alert alert-danger');
     $_SESSION['POPUP'][] = array('CONTENT' => 'You can not add workers unless a valid Payout Address is set in your User Settings.', 'TYPE' => 'alert alert-danger');
     $smarty->assign('CONTENT', 'disabled.tpl');
-    
   } else {
     switch (@$_REQUEST['do']) {
     case 'delete':
diff --git a/include/version.inc.php b/include/version.inc.php
index 91d93ee8d..a4e0d533f 100644
--- a/include/version.inc.php
+++ b/include/version.inc.php
@@ -2,7 +2,7 @@
 $defflip = (!cfip()) ? exit(header('HTTP/1.1 401 Unauthorized')) : 1;
 
 define('MPOS_VERSION', '0.0.4');
-define('DB_VERSION', '0.0.11');
+define('DB_VERSION', '0.0.12');
 define('CONFIG_VERSION', '0.0.8');
 define('HASH_VERSION', 1);
 
diff --git a/scripts/validate_addresses.php b/scripts/validate_addresses.php
index 15ad46b27..83c314cc3 100755
--- a/scripts/validate_addresses.php
+++ b/scripts/validate_addresses.php
@@ -42,6 +42,7 @@
 
 printf($mask, 'Username', 'E-Mail', 'Address', 'Status');
 foreach ($users as $aData) {
+  $aData['coin_address'] = $coin_address->getCoinAddress($aData['id']);
   if (empty($aData['coin_address']) && $aData['is_locked'] == 0) {
     $status = 'UNSET';
   } else if ($aData['is_locked'] == 1) {
diff --git a/scripts/validate_users.php b/scripts/validate_users.php
index fe80e2aaf..cd99bbb6b 100755
--- a/scripts/validate_users.php
+++ b/scripts/validate_users.php
@@ -36,7 +36,6 @@
 		$username = $user['username'];
 		$loggedIp = $user['loggedIp'];
 		$lastLogin  = $user['last_login'];
-		$coinAddress = $user['coin_address'];
 		$mailAddress = $user['email']; 
 
 		$everLoggedIn = !empty($lastLogin);
diff --git a/sql/000_base_structure.sql b/sql/000_base_structure.sql
index 85e3e67cf..2299c3b36 100644
--- a/sql/000_base_structure.sql
+++ b/sql/000_base_structure.sql
@@ -53,6 +53,16 @@ CREATE TABLE IF NOT EXISTS `blocks` (
   KEY `time` (`time`)
 ) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COMMENT='Discovered blocks persisted from Litecoin Service';
 
+CREATE TABLE IF NOT EXISTS `coin_addresses` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `account_id` int(11) NOT NULL,
+  `currency` varchar(5) NOT NULL,
+  `coin_address` varchar(255) NOT NULL,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `coin_address` (`coin_address`),
+  KEY `account_id` (`account_id`)
+) ENGINE=InnoDB  DEFAULT CHARSET=utf8
+
 CREATE TABLE IF NOT EXISTS `invitations` (
   `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
   `account_id` int(11) unsigned NOT NULL,
diff --git a/upgrade/definitions/0.0.11_to_0.0.12.inc.php b/upgrade/definitions/0.0.11_to_0.0.12.inc.php
new file mode 100644
index 000000000..f4ad2b303
--- /dev/null
+++ b/upgrade/definitions/0.0.11_to_0.0.12.inc.php
@@ -0,0 +1,32 @@
+<?php
+function run_0012() {
+  // Ugly but haven't found a better way
+  global $setting, $config, $user, $mysqli;
+
+  // Version information
+  $db_version_old = '0.0.11';  // What version do we expect
+  $db_version_new = '0.0.12';  // What is the new version we wish to upgrade to
+  $db_version_now = $setting->getValue('DB_VERSION');  // Our actual version installed
+
+  // Upgrade specific variables
+  $aSql[] = "CREATE TABLE `coin_addresses` ( `id` int(11) NOT NULL AUTO_INCREMENT, `account_id` int(11) NOT NULL, `currency` varchar(55555) NOT NULL, `coin_address` varchar(255) NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `coin_address` (`coin_address`), KEY `account_id` (`account_id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8";
+  $aSql[] = "INSERT INTO coin_addresses (account_id, currency, coin_address) SELECT id, '" . $config['currency'] . "', coin_address FROM " . $user->getTableName();
+  $aSql[] = "ALTER TABLE `" . $user->getTableName() . "` DROP `coin_address`";
+  $aSql[] = "UPDATE " . $setting->getTableName() . "    SET value = '0.0.12' WHERE name = 'DB_VERSION'";
+
+  if ($db_version_now == $db_version_old && version_compare($db_version_now, DB_VERSION, '<')) {
+    // Run the upgrade
+    echo '- Starting database migration to version ' . $db_version_new . PHP_EOL;
+    foreach ($aSql as $sql) {
+      echo '-  Preparing: ' . $sql . PHP_EOL;
+      $stmt = $mysqli->prepare($sql);
+      if ($stmt && $stmt->execute()) {
+        echo '-    success' . PHP_EOL;
+      } else {
+        echo '-    failed: ' . $mysqli->error . PHP_EOL;
+        exit(1);
+      }
+    }
+  }
+}
+?>