We'll create fresh WordPress site with Copyright Autoupdater installed. You have 20 minutes to test the plugin after that site we'll be deleted.
Never worry about updating your copyright notice again!
The best way to add a copyright notice to your site is to include a range of dates, from first publish to today. This plugin automatically gets the date of your first published content and uses it to create the copyright range.
Add the line <?php do_action( 'copyright_autoupdater_footer' ); ?>
to your footer template file. You can wrap this in any HTML element to adjust the layout.