according to https://wiki.documentfoundation.org/QA/BugReport#Not_all_issues_go_to_Bugzilla please fil your request in https://redmine.documentfoundation.org/ and for reference, pgp keys are available from https://downloadarchive.documentfoundation.org/libreoffice/old/
Yes, they are available, but they are not easily found and how to apply them is not well explained. There should something visible on the first sight how to check downloaded files and where to obtain the necessary data. I added a thorough explanation to the headline which first appeared without any explanation. But now my explanation does not appear here and I have no copy of it on my computer. Actually, I don't feel like carefully putting this more than one hour work down on paper again (even though I remember the four points you need very precisely: SHA256SUMS, SHA256SUMS.gpg, Downloading your signing key and its Fingerprint, comparing the fingerprint to the downloaded public key, and applying it all together).
(In reply to Adalbert Hanßen from comment #2) > now my explanation does not appear here indeed weird. > no copy apprently cross-posted here : https://listarchives.libreoffice.org/global/users/2025/msg00737.html