Verra (Verified Carbon Standard)
The dominant voluntary carbon registry: 3,886 projects listed, 2,059 registered, 1.223 billion VCUs issued (over 60% of the ~2 billion credits across all four major registries). Includes specialized blue carbon methodologies. The VCM contracted sharply in 2022-23 (volumes -56%, REDD+ value -62%), but removal credits now represent ~1/3 of market value, signaling a quality shift Verra is central to.
Certification
Free