According to Bitcoin.com, Zimbabwe's largest gold producer, Kuvimba Mining House, has launched Comstack, a blockchain-based gold mine traceability system. The system ensures the full traceability of all gold produced by Kuvimba from the mine to the international market. The Comstack system has been put into use in the Freda Rebecca and Jenna mines, and plans to expand to the production of other minerals in the future. Kuvimba said that this move will help improve the transparency of the production process and meet the regulatory requirements of the international market on the source of gold.