How about including copyright info on the title page like Smashwords recommends? (jakonrath.blogspot.ru)
Unfortunately, I am not going to point you to any repository of copyright info that I have been saving to post on Slaw nor do I have a particular insight to offer. (slaw.ca)
Smash 4 was made by Bandai Namco, but the trailer shows this being made by Hal with no copyright info. (gamespot.com)