http://tzoz3bensgxyzs7da7lpgsn3a74h7hlbm4wa6ytq2tg6ktd57w22vqqd.onion/doc/about/openpgp_keys/index.en.html
Make sure to verify the keys that you download, because there are
several fake and maybe malicious Tails keys on the key servers. For example, if you first authenticate the Tails signing key
through the OpenPGP Web of Trust , then
you can verify our others keys as they are all certified by the Tails
signing key.