Standard: Article 6.4 validation and verification standard for projects (v.02.0) Open English PDF 0.50 MB Symbol A6.4-STAN-AC-003 Publication date 20 May 2025 Document type Standard Author UNFCCC. Article 6.4 Supervisory Body Topic Mitigation actions and commitments Notes Previous versions: ver. 01.0 Initial adoption: SB 008, 2 Nov. 2023.