mechanism for compensating for all or a part of the carbon footprint of a product (CFP) (3.1.1.1) or the partial CFP (3.1.1.2) through the prevention of the release of, reduction in, or removal of an amount of greenhouse gas emissions (3.1.2.5) in a process (3.1.3.5) outside the product system (3.1.3.2) under study