I'm confused by the difference between CC BY 4.0 and CC BY-SA (4.0?)
I found some books shared with CC BY 4.0. I want to publish these books in my book-reading app (commercial product) but I need to make changes to it for my country's market and want to protect those changes.
CC BY 4.0 requires me to:
- attribute original creators (I'm totally ok with that)
- indicate if changes are made (I'm totally ok with that)
BUT it also requires me to link to the license.
I would think that "linking to the original license (CC BY)" is confusing if I don't want to license it under the same license terms (since it is not a SA (Share Alike) license. How would I go about doing this? Would something like "This work was originally shared under CC BY 4.0, the work it it's adapted form is now shared under CC BY-NC-ND" suffice? Do you have an example for such a case?
AND it also requires me to not apply any legal terms or technological measures that legally restrict others from doing anything the license permits.
I don't really get this. The CC BY is not as SA (Share Alike) license so I could share it differently. This to me suggests I would be able to restrict it's useage. Not being able to apply restricting legal terms seems like a contradition.