Changelog for ubu-keyring-2012.05.19-4.fc23.noarch.rpm :
Fri Jun 19 14:00:00 2015 Fedora Release Engineering - 2012.05.19-4
- Rebuilt for https://fedoraproject.org/wiki/Fedora_23_Mass_Rebuild

Sun Jun 8 14:00:00 2014 Fedora Release Engineering - 2012.05.19-3
- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild

Tue Oct 15 14:00:00 2013 Sandro Mani - 2012.05.19-2
- Remove empty file

Thu Oct 10 14:00:00 2013 Sandro Mani - 2012.05.19-1
- Initial package