Attribution

Plaza serves data from multiple sources. OpenStreetMap data is provided under the Open Database License (ODbL) and requires attribution. Other datasets (Plaza-curated and user-uploaded) have their own licensing terms specified per dataset.

What to display

<a href="https://www.openstreetmap.org/copyright">© OpenStreetMap contributors</a>

That’s it. A text link to the OSM copyright page.

Where to put it

• Maps: corner of the map (lower-right is traditional, any corner works)
• Apps: footer, about page, or splash screen
• Websites: page footer or adjacent to the data
• APIs you build on top of Plaza: pass the attribution through to your consumers (the X-Attribution response header makes this easy)

The attribution must be visible to anyone who sees the data. It doesn’t need to be shown on every screen — an app footer or about page is fine.

Caching and storage

Normal API usage does not trigger share-alike:

• Caching geocoding results in your database
• Storing routes, isochrones, or search results
• Combining Plaza data with your own proprietary data
• Using results in AI/ML pipelines

These are all fine. No special license needed.

Share-alike only applies if you aggregate API responses to reconstruct a substantial portion of the OpenStreetMap database itself — essentially, bulk-downloading the planet through the API to build a competing dataset. Normal application usage is not this.

The X-Attribution header

Every Plaza API response includes:

X-Attribution: Data © OpenStreetMap contributors, ODbL 1.0

You can use this to programmatically surface attribution in your application.

Summary

Question	Answer
Do I need to credit OpenStreetMap?	Yes — a link to openstreetmap.org/copyright
Do I need to credit Plaza?	No (but we appreciate it)
Can I cache API results?	Yes
Can I combine with proprietary data?	Yes
Can I use results in AI/ML?	Yes
Do I need to watermark anything?	No
When does share-alike apply?	Only if you reconstruct a substantial part of the OSM database

For full license details, see the ODbL summary and the OSMF attribution guidelines.

Other datasets

Plaza-curated datasets and user-uploaded datasets each have their own license and attribution fields. Check the license and attribution properties on the dataset metadata. When a dataset specifies attribution, display it alongside the OpenStreetMap credit if you’re mixing data sources in the same view.