The document summarizes Diane Peters' presentation on the development of CC0 at a CC meeting in Sapporo, Japan. It discusses CC's previous attempts at a public domain dedication tool and the design principles for CC0. It outlines feedback received on drafts of CC0, including issues around waiver language, third party rights, and signature requirements. Solutions to some of the issues are proposed, and next steps are discussed around resolving remaining issues, implementation, and promotion of CC0.