LiquidChain builds the Liquidity.Network (http://liquidity.network), a practical global blockchain micropayment system, built on top of Ethereum, supporting millions of users securely, reducing transaction costs significantly and enabling the mainstream adoption of blockchain. As a global settlement system, the Liquidity.Network offers an API to developers to build their applications on top of and allowing payment processors to benefit from the secure and fast transmission of digital cash. The Liquidity.Network has no access to the assets of the participants/users, those funds are secured by the underlying blockchain. The secret sauce of the Liquidity.Network are novel hubs, which are significantly more powerful and simpler than traditional P2P payment channel networks such as Lightning and Raiden. Liquidity is the technology necessary to build fast, decentralized exchanges.