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 16 May 2023 03:23:02 AM JST gpg: using RSA key 788C2AECF7F27F1B6CB2BE671E65AB7181830BAC gpg: requesting key 1E65AB7181830BAC from hkp server keyserver.ubuntu.com gpg: Can't check signature: No public key ==> BAD/TAMPERED signature detected! <==