Actually most western countries have been moving towards a standard where everyone can operate under the same (or similar) regulations. I would think Canada is a signatory, as the U.S. I know is.
The implementation of the Berne Convention under U.S. law negates the old requirement that authors explicitly mark works as being copyrighted. Instead a work is now copyrighted implicitly at the moment of it’s creation, and does not need a copyright caption.
(This is the inverse of what used to be standard practice, and now persons wishing not to copyright works must explicitly release their work to the public domain by adding a caption to this effect such as “no copyright intended”.)
The only problem is not a lot of people realize this, so publishers still prefer to add the copyright caption even though it is not absolutely necessary. But doing so also allows the public statement of who or what entity holds the copyright. So it never hurts.
The Berne Convention is an international treaty, that still requires that local or national laws be changed or amended to comply with it. (So consult the law wherever you will be publishing.)
In the U.S. there is a constitutional clause prohibiting “ex post facto” laws, so some of the aspects of older copyright acts (such as when a certain work’s copyright expires,) must still be honored because the new acts cannot override those that were in effect at the time older works were created.
As you are creating new works these confusing “grandfather” issues (from multiple copyright acts throughout the last century) will not concern you much. You’ll be concerned only with what is the current law.