$ gpg --verify artix-base-s6-20201109-x86_64.iso.sig artix-base-s6-20201109-x86_64.iso
gpg: Signature made Tue 10 Nov 2020 08:03:54 AM KST
gpg: using RSA key A574A1915CEDE31A3BFF5A68606520ACB886B428
gpg: BAD signature from "Christos Nouskas <[email protected]>" [unknown]