Linera is a real‑time blockchain infrastructure built on elastic validators and microchains. It puts users at the center by letting them operate their own chains, solving blockspace scarcity and delivering predictable performance at Internet scale. Applications communicate through asynchronous messages and compose synchronously within a microchain. Our language‑agnostic programming model and Rust‑based SDK empower developers to build agentic Web3 apps that interact with external services via secure RPCs and GraphQL. Linera uses delegated proof of stake to ensure robust decentralization and community‑driven auditing.