Are you actually planning to sue people for not providing attribution? If not, you might just want to save yourself the headache by using a more permissive lice

Are you actually planning to sue people for not providing attribution? If not, you might just want to save yourself the headache by using a more permissive license -- BSD and MIT are popular but if you really like Creative Commons, they have the Zero License: https://creativecommons.org/publicdomain/zero/1.0/ Up to you, though.