Sign the dist as the last step before creating the archive. Take care not to modify/regenerate dist meta files or the manifest.

Error: gpg: Signature made Tue 11 Apr 2023 12:45:51 AM JST gpg: using DSA key 395F66B765720151 gpg: Can't check signature: No public key ==> BAD/TAMPERED signature detected! <==

Add a 'repository' resource to the META.yml via 'meta_add' accessor (for Module::Build) or META_ADD parameter (for ExtUtils::MakeMaker).

This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.