Key:attribution
 attribution
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| Description |
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The data source of the information used to tag and/or place this element (often considered deprecated) 
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| Group: annotations |
| Used on these elements |
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| Status: deprecated |
| Tools for this tag |
Similar pages for structural reference: Key:religion, Key:waterway.
In OSM, this key was mostly used for bulk imports, but also when you base your edits on a data set. OpenHistoricalMap has different guidelines: OpenHistoricalMap/Tags. More info below.
Source information on object level is often considered deprecated. Please consider attributing and naming the source meta information on the changeset instead. and/or contributors wiki page instead.
Note that any user of OSM data may filter OSM data in any way imaginable, including in a way that (intentionally or unintentionally) removes attribution tags. The only legally required publicly visible attribution is [1]. Therefore, no tag is an acceptable place for legally required attribution!
Examples
Usage in OpenHistoricMap
The authoritative article is here: OpenHistoricalMap/Tags#Sources and licenses. The brief version is:
OHM data is in the public domain by default via a CC0 dedication. If you copy data wholesale from a copyrighted (but freely licensed) third-party source, you should respect its license by adding license=* and Key:attribution=* tags to each individual feature.
Tagging mistake
See also
source=*preferred tag for the list of sources used for an edit- Annotations — Overview: Providing further information about tag values for other mappers and in some cases also for users
Open Historical Map
OHM is using this tag