[OSM-talk] Can I say "yes" to the ODbL if I can't account for 100% of my data?

[SomeoneElse]

On 16/06/2011 18:00, M∡rtin Koppenhoefer wrote:
> You can also put this information in the change-set-comment. IMHO this
> is where this belongs to. AFAIK the source-tag is disputed and it is
> recommended to use the changeset comments.

The problem with the changeset "source" tag is that there's no 
granularity - one tag applies to the whole edit. Presumably the only 
time that this would be valid would be an entirely armchair tracing 
session with no local knowledge and no other on-the-ground evidence 
(surely not recommended) or an import (which should surely afterwards be 
tidied up with local knowledge anyway).

Using changeset comments is even worse; it's just a bunch of text 
associated with a particular edit. If I wanted to know the source for 
updates for the Pennine Way 
(http://www.openstreetmap.org/browse/relation/63872) I'd need to fetch 
the relation history (not feasible via the API I suspect), fetch 209 
changeset details, and manually parse a lump of English text in each one 
for something that might be a "source".

Cheers,
Andy