GMB is a well-known digital currency payment and exchange platform in South Korea. GMB has the same price volatility as existing cryptocurrencies, and the "Master coin" that can be used as the main currency has the same function as the currency of various countries. Branch coin" composition. GMB overcomes the scalability limitations of existing blockchains and provides "Objective Smart Contracts (Objective Smart Contracts)" that anyone can use. The first decentralized service application of the GMB platform is "Travel Space", a blockchain-based travel planning application where users can get compensation and travel, and then expand the environment to travel, finance, medical care, transportation, and accommodation , and areas related to entertainment and real life. GMB plans to launch the mainnet in early 2019, and the processing speed will reach millions per second. GMB is mainly used to pay for products and services on the GMB platform.