This is probably not good.  You're now saying that this code didn't exist before 2014! http://www.copyright.gov/circs/circ03.pdf: 
1 The symbol © (letter C in a circle); the word “Copyright”; 
or the abbreviation “Copr.”
2 The year of first publication. If the work is a derivative 
work or a compilation incorporating previously published 
material, the year date of first publication of the derivative 
work or compilation is sufficient.