Sign has launched a sovereign Layer 2 solution based on BNB Chain, specifically designed for national-level digital infrastructure. This marks a significant turning point for blockchain, transitioning from decentralization to sovereignty. Traditional public chains face compliance challenges, while sovereign Layer 2 offers a balance—maintaining technological advantages while meeting national regulatory requirements. SIGN Stack supports customizable Sequencer permissions, DID identity systems, and gas-free stablecoin transfers, essentially serving as a blockchain operating system tailored for national entities. BNB Chain is evolving from a token ecosystem for trading platforms into the settlement layer for global sovereign blockchain infrastructure. This shift in positioning is worth paying attention to.