gpg --verify imagemagick-7.1.1-15.tar.gz.sig
https://github.com/ImageMagick/ImageMagick/archive/refs/tags/7.1.1-15.tar.gz
If you prefer a direct link, you can try the following:
: For older or specific builds, the ImageMagick Archive provides various version snapshots, though the main download page usually focuses on the latest stable release.
https://www.imagemagick.org/script/download.php
https://www.imagemagick.org/download/ImageMagick-7.1.1-15.tar.gz
