It's a mandatory requirement of license to "give appropriate credit" - https://creativecommons.org/licenses/by/4.0/deed https://creativecommons.org/licenses/by/

It's a mandatory requirement of license to "give appropriate credit" - https://creativecommons.org/licenses/by/4.0/deed https://creativecommons.org/licenses/by/4.0/deed If author of the campaign wouldn't put David's name on the artwork, then that would be violation of license condition. Let me know if you can specify any other way to "give appropriate credit", without mentioning the name of original author. ^__^