Sovereign is an ecosystem of interoperable and scalable rollups that can be run on any blockchain. The Sovereign SDK will provide all the necessary components of a blockchain, such as a peer-to-peer network, a database, and an RPC node, allowing developers to focus on the business logic of their chain. Furthermore, it provides a set of default modules that can work efficiently in a zero-knowledge environment, including a token implementation, an authenticated data store, and a bridging module. Developers can combine these primitives into app-chains or build their own state-transition functions from scratch by implementing a standard set of APIs.