The “trial run”, however, does not include carbon sink credits. Therefore, at present in Japan, the only system under which forest carbon sinks can be used for credits is the J-VER system. It is becoming more widespread in the United States and Europe. However, emissions trading is intended to enable the fulfilment of emissions reduction obligations under the Kyoto Protocol or other local or national systems. The credits used under carbon offsetting are called verified emission reduction (VER).