[OSM-legal-talk] Attribution "chaining"

[Rob Myers]

On Tue, Aug 5, 2008 at 4:15 PM, Frederik Ramm <frederik at remote.org> wrote:

>    if I offer processed OSM data on my web site for others to use under
> CC-BY-SA: Whom do the others have to give attribution? I usually expect
> everyone to retain the "OpenStreetMap contributors" message and leave me
>  (or my company) out of the picture - but if I wanted to, could I also
> ask everyone to give *me* credit and leave it to them whether or not
> they mention OSM?

You have to pass on attribution information, and identify contributors
equally. So you could probably just say "you must credit me" next to a
ZIP file download of the data, but the ZIP file would have to include
the full attribution data. (IANAL, TINLA)

> Or more generally, how does the attribution requirement of CC-BY-SA work
> in a chain of derived works? Does everyone just attribute the previous
> element of the chain?

Everyone attributes every element of the chain.

Yes, this could be a problem for long chains. :-)

- Rob.