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/>.