Online Exchange Trading The Exchange is the central market place for on-line carbon credits trading. We provide a service that allows you to buy and sell 24 hours a day, 365 days a year accessible from any device from anywhere in the world, fully secure, and using cutting edge on-line blockchain enabled tracing functionality. Contact us for access to our system. Direct Trading GCT will generate carbon credits by preserving the natural beauty of Japan. In additionl to the Exchange, we also offer a market and mechanism for the direct registration of carbon credits to international standards, using globally recognised certification organisations. We enable the directly trade to third parties seeking certified carbon credits. Contact us for more information on carbon credits you can purchase right now.