static public function get_coin_network($symbol, $network, $silentfail=false) {
        $data = self::get_coin($symbol, $silentfail);
        
        $info = @$data[$network];
        if( !$info && !$silentfail ) {
            throw new \Exception("Network not found: $symbol/$network");
        }
        
        return $info;
    }