GMB is the fastest blockchain platform with Dual-Cryptocurrency that can connect into real life. Our coin consists of Master Coin, the key currency of GMB with price volatility similiar to existing cryptocurrency, and Branch Coin, a separate currency that is linked to the fiat currency of each country. GMB overcomes the scalability limits of existing blockchain and provides easy-to-use Objective Smart Contracts. Our first decentralized service app is TravelSpace, a blockchain based travel service, that allows users to travel while receiving rewards. We plan on expanding the use environment to all aspects of life, including entertainment, medical care, finance, and much more.