Founded in 2017, SpaceChain is a community-based space platform that combines space and blockchain technologies to build the world¡¯s first open-source blockchain-based satellite network, allowing users to develop and run decentralized applications in space. The SpaceChain operating system will be available to anyone, anywhere in the world, all while remaining secure and immutable through proven blockchain cryptography. In doing so, SpaceChain¡¯s vision is to remove barriers and allow a global community to access and collaborate in space. SpaceChain is building the world¡¯s first open-source satellite network to enable a next-generation infrastructure for blockchain industry. This mesh node constellation of low earth orbit micro-satellites will serve as a decentralized infrastructure for the blockchain industry. ' SpaceChain¡¯s open-source operating system ¡ª SpaceChain OS ¡ª converts single-operator satellites into multi-tenant ones, allowing users to develop different types of space-based applications on a single satellite. The OS provides a blockchain sandbox that enables dApps developed on this platform to run securely and independently without any interference. Thus, developers worldwide are able to utilize the platform for rapid development, testing and deployment of decentralized applications (dApps), including cryptocurrency exchanges, global real-time sensor arrays, ultra-secure data storage, true peer-to-peer encrypted messaging, or applications we havent even dreamt of yet. Initially, when we designed the blockchain sandbox, we integrated fundamentals from Qtum¡¯s smart contract platform and SylixOS¡¯s open-source real-time operating system into the SpaceChain OS. Additionally, for better interoperability, we have also integrated Ethereum¡¯s smart contract platform with our OS. In time, we will integrate our OS with other blockchain smart contract platforms as we want our system to be available for all communities. As blockchain technology continues to advance, we will constantly make upgrades to our systems.