Doing Alt 0169 on a laptop is a real pain. If you are on a Window's machine, then use Charmap instead. Charmap is a program that comes with all Window's Operating systesm. You then select the font you want to use, click on the copyright symbol. Click Select button, then copy button. In PS enter the text mode using the text tool and press Ctrl V to paste the copyright symbol in. This works just fine.
You can also use shapes, but that does work as well when working with text.
"The map is not the Territory"