I think that the ability to identify creators will help define the duration of their rights. It must be understood that, in Canada, copyright is associated with an individual and not a company. This is contrary to the United States, where the rights for commissioned works belong to companies. In Canada, the term of the copyright starts when the work is created by one or more individuals, and it continues until 50 years after their death.
On October 1st, 2018. See this statement in context.