Yes, CC0 has not yet been approved as an open source license by OSI.[1][2] FSF on the other hand, do consider CC0 to be compatible with GPL.[3] [1]: https://op

Yes, CC0 has not yet been approved as an open source license by OSI.[1][2] FSF on the other hand, do consider CC0 to be compatible with GPL.[3] [1]: https://opensource.org/faq#cc-zero https://opensource.org/faq#cc-zero [2]: https://wiki.creativecommons.org/wiki/CC0_FAQ#May_I_apply_CC0_to_computer_software.3F_If_so.2C_is_there_a_recommended_implementation.3F https://wiki.creativecommons.org/wiki/CC0_FAQ#May_I_apply_CC... [3]: https://www.gnu.org/licenses/license-list.html#CC0 https://www.gnu.org/licenses/license-list.html#CC0