Release ALT, and the copyright symbol should appear. Add text to the copyright symbol if you want the copyright watermark to include more information.

Photoshop CC 2014 tutorial showing how to transform a simple black and white graphic into a techno-inspired, logo or symbol ...

There's no copyright symbol on any common keyboard, but it's easy to insert the symbol whether you're using Windows or a Mac.

Emoticons and other symbols are popular, so here is how to set up OS X to quickly access common ones instead of having to open the Character Viewer window each time.