With Drupal 9 coming this summer, my team at the Eberly College of Science at Penn State felt it necessary to get all of the custom modules we have written (or are mission critical contrib modules) updated and as future-ready as possible. A happy side effect of that process is that we've taken the time to modernize the code in the Drupal 8 version of Cosign (https://www.drupal.org/project/cosign). After joining the Cosign project, I'm happy to announce that we have released an official Alpha version of the Drupal 8 version of Cosign.