An alternative, trustworthy, and supported download location is FossHub: https://www.fosshub.com/Shotcut.html
Shotcut’s download page uses GitHub and the project’s Releases page as linked to by @sauron above, and GitHub uses Amazon Web Services S3, both of which are about as reliable as it can get. However, even they suffer problems at times. I do not think FossHub uses the same infrastructure.