[OSM-legal-talk] Share-alike license for gps coordinates derived from OSM
kari.pihkala at gmail.com
Mon Sep 8 19:31:50 BST 2008
Yes, that was what I was going to do. However, I realised that the license
for OSM will change soon. So, if I start using the CC-BY-SA license for
coordinates on my web site, I would have to change soon to the new OSM
Which raises an interesting question: if my web site had 10000 CC-BY-SA
licensed coordinates derived from OSM, how could I change that license to
the new ODBL license? I would have to send an email to all OSM contributors
and ask for the permission? I bet I couldn't get a 100% approval.
Fortunately, I don't have such a data set, so I don't have to worry about
However, that raises another worrying question: Once the new ODBL license is
effective, how do I know that the license won't change again (see
"I assure everyone the license will need to be changed again at some
in the future.") How will I be able to handle the next license change?
Of course, old coordinates could remain licensed under CC-BY-SA, the new
coordinates licensed under ODBL and the future coordinates under ODBL2.
Then, I want to create a derivative work out of these (say, count the number
of places within London). Which license to use for the result??
This makes the usage of OSM questionable, so I have decided not to use the
OSM map on my site, at least for the time being.
On Thu, Sep 4, 2008 at 11:26 AM, Rob Myers <rob at robmyers.org> wrote:
> Depending on how it relates to the OSM data, you might be able to BY
> your data, and then this could be combined with OSM's data to produce
> a BY-SA derivative.
> See here for compatibility:
> - Rob.
> On Thu, Sep 4, 2008 at 7:52 AM, Kari Pihkala <kari.pihkala at gmail.com>
> >> Hi,
> >> I'm creating a web site where people can set locations for places over a
> >> osm
> >> map. I also allow public to download these coordinate sets freely.
> >> I think according to your share-alike license the derived coordinates
> >> be under the same license (by-sa 2.0)? I'm ok about this.
> >> However, people are also inserting additional information about these
> >> coordinates, such as place names, address, etc.
> >> As the data set is a combination of gps coordinates (derived from osm
> >> and names, addresses etc. does it mean that the whole data set must be
> >> licensed under by-sa-2.0??
> >> BR,
> >> Kari
> > I'm anwering myself, as I found the answer in FAQ. (should have read it
> > first!!)
> > http://wiki.openstreetmap.org/index.php/Common_licence_interpretations
> > "I created a layer on top of an OSM map. What do I have to put under your
> > license?
> > ... If what you create is based on OSM data (for example if you create a
> > layer by looking at the OSM data and refering to locations on it) then it
> > likely you have created a derivative work.
> > ... If you have created a derivative work, the work as a whole must be
> > subject to the OSM licence. .."
> > I was thinking about licensing my own data under CC-BY, but your FAQ says
> > that I have to license it under CC-BY-SA.
> > I see two options for me:
> > 1. Dual license the data (all data with coordinates under CC-BY-SA, my
> > without the coordinates under CC-BY)
> > 2. Single license the data under CC-BY without any coordinates. No one
> > have access to the coordinates.
> > BR,
> > Kari
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