MK Coin is a payment service improvement project based on cryptocurrency. It improves various problems in the market by improving the payment system, providing consumers with reasonable consumption and more benefits, aiming at increasing sales revenue and reducing costs. MK Coin is a cryptocurrency used to ensure usability for users. It can be purchased through exchanges and other designated sales channels, and various encrypted credits can be transferred and remitted. It is used as the key coin of the MK coin. Project, MK Coin can be exchanged for the agreed payment amount to partners through MK Pay.