Hi,
I created new project distribution-gpg-keys:
https://github.com/xsuchy/distribution-gpg-keys
There are various GPG keys used to sign RPM packages. Right now:
* centos
* epel
* fedora
* redhat
* rpmfusion
In future I will try to add all Copr gpg keys.
If you find it useful too, you can do package review:
https://bugzilla.redhat.com/show_bug.cgi?id=1272235
Mirek Suchy