The OpenPCB CoreLibrary contains material converted or adapted from the KiCad
KiCad-derived symbols, footprints, 3D models, and related library metadata are provided under Creative Commons Attribution-ShareAlike 4.0 International (CC-BY-SA-4.0) with the KiCad Libraries Exception.
Original source: https://gitlab.com/kicad/libraries
KiCad library license and exception: https://www.kicad.org/libraries/license/
Format conversion does not remove KiCad licensing obligations. Converted or modified KiCad-derived library data remains attributed to the KiCad official libraries and is tracked in each asset's structured provenance metadata.