Use of the CCB Standards must be certified through a two-step process by independent, validation/verification bodies (VVB). The process is described in the CCB Program Rules v3.1, and can be summarized as follows:

• Validation demonstrates that a project is designed to generate significant climate, community and biodiversity benefits. Successful validation to the CCB Standards can help project proponents to build support among stakeholders and investors.
• Verification is a rigorous endorsement of the quality of project implementation and the delivery of multiple benefits during a certain time period. Successful verification of a project to the CCB Standards enables the addition of a CCB label to verified emissions reductions units, such as VCUs, generated during the CCB-verified period.

A VVB is a recognized, qualified and independent auditing organization that evaluates whether a project has met each of the CCB Standards criteria and any other requirements following the process defined in the CCB Program documents. To be approved, VVBs must meet the criteria set out in the CCB Program Rules v3.1. More than twenty VVBs in Asia, Europe, North and South America are currently approved.