Data and licensing - FlightPortrait

The licenses

What	License
The network stack, API, and web tracker	Apache-2.0
The firmware and device protocol	Apache-2.0
Data served by the network	ODbL 1.0
Basemap tiles	OpenFreemap
Airports	OurAirports, public domain
Aircraft photos	planespotters.net, credited per image

Both licenses are irrevocable. If FlightPortrait disappears, everything already published stays published and every instance keeps working.

What the network serves

Live positions, trails, and per-station presence from network receivers.
Derived routes: callsign to origin and destination, computed nightly from openly licensed trace archives and published back to the commons.
Per-airframe flight logs: the legs the open trace archives show an aircraft flying, going back about a year. Observation only. A quiet day means the archives did not see it, nothing more.

Attribution

Data (c) FlightPortrait network feeders, ODbL 1.0. If you build on the API, that line and a link satisfy the license.

The privacy floor

Station locations are published rounded to about 11 km, derived from coverage, never from an address. Feeder IP addresses are not stored. A station’s full UUID is a capability held by its owner; the server stores only a hash. These are not settings; they do not vary by deployment.