As long as you are the author you are eligible to write a copyright notice that states that you are the copyright holder, you don't have to redirect the copyright to anyone else. I suggest you check out this page on how to use GPL.
This is what is generally written in GPL'd source code files:
Copyright YEAR FIRSTNAME LASTNAME
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.