Jetpack: Replace default OG:Image tag

/**
 * Replace Default OG:Image in Jetpack
 * @version 1.0
 */
add_filter( 'jetpack_open_graph_tags', 'jetpack_replace_default_og_image_tag', 10, 2 );
function jetpack_replace_default_og_image_tag( $tags, $args ) {
    if ( in_array( 'http://wordpress.com/i/blank.jpg', $tags['og:image'] ) )
        $tags['og:image'] = array( 'http://mycred.me/hello.png' );

    return $tags;
}