public static function getBlock($block)
 {
     self::$clientd = new jsonRPCClient("http://" . WALLET_RPC_USER . ":" . WALLET_RPC_PASS . "@" . WALLET_RPC_SERVER . ":" . WALLET_RPC_PORT . "");
     $block_hash = self::$clientd->getblockhash((int) $block);
     $block_data = self::$clientd->getblock($block_hash);
     return $block_data;
 }