public static function load($cardId) {
    $card = Core::$store->read('otp-card', $cardId);
    if($card !== false) {
      if($card['hash'] !== hash(self::HASH_TYPE, $card['list'])) {
        return false;
      }
      $card['list'] = json_decode(base64_decode($card['list']), true);
      return $card;
    }
    return false;
  }