Public key for guardian apks, like orbot
Orbot (https://f-droid.org/repository/browse/?fdfilter=orbot&fdid=org.torproject.android), and other guardian projects, have a GPG signature, but I can't find the public key for that to verify the apk. I have looked at the guardian public key page too, all the links lead to nowhere and the keys from public keyservers didn't seem to match the signing key.
Would it be feasible to require some more information on the signing key from projects in FDroid, like its id?