TK holders: This is a general label for material that is in the public domain and that you have no copyright ownership or control over. This label should be used to let second and third party users of this material know that despite having no legal control over the future use [commercial or otherwise] of this material, that they should still follow cultural protocols and expectations of use for this material. In particular this relates to acknowledging you as the source community for this material. This label should be used to promote awareness and to help to prevent derogatory or other uses of material that may constitute community or cultural harm.
TK users: This material is available for commercial use because it is in the public domain. While X community does not have any copyright ownership over this material, you are requested to respect and follow existing community protocols when using this material. Regardless of legal ownership X community requests that it [in conjunction with Y] be recognized as the source community in any future commercial use of this material. You are also kindly requested to pay special attention to the community’s protocols and to not use this material in any way that could constitute derogatory treatment and/or any other use that could constitute community or cultural harm.