[OSM-legal-talk] Some questions about using ODbL "Produced Work"

[Rob Myers]

On 07/24/2012 08:51 PM, Tadeusz Knapik wrote:
> Hello,
>
>> ODbL has an attribution requirement. This lets you know where the original
>> database is from, and your responsibilities should you recreate part of it.
>>
>> Should you recreate part of the original database, you know your
>> responsibilities due to the link to the license from the attribution.
>>
>> There's no magic, the ODbL just follows its data using attribution.
> Yes, but I can do my Produced Work and it'll CC-By-SA (let's say I
> just do tiles from map of my area), attributing it. Someone else will
> use my work (use the tiles, enriching it with self-generated trails,
> added mountain tops etc), and put it on CC-By-SA ("my" CC-By-SA
> doesn't order him to attribute OSM, he uses my product). And then
> another one will use this last map to retrace the whole area into his
> CC-By-SA map. Where is the point of breaking ODbL license?

You have to maintain attribution under BY-SA, so OSM has to be 
attributed at each point and no break will occur.

- Rob.