Blockchain layers

Blockchain technology is structured in layers, each serving distinct functions that enhance the overall ecosystem. Layer 1, typically represented by blockchains like Bitcoin and Ethereum, focuses on the base protocol and the primary transactional network. Layer 1 operates independently and directly verifies and processes blockchain transactions. Layer 2 solutions, including rollups and state channels, are built atop the Layer 1 blockchain, aiming to improve scalability and efficiency. They handle transactions off-chain, reducing congestion on the primary network and allowing for faster transaction speeds. Notable examples include the Lightning Network for Bitcoin and Optimistic Rollups for Ethereum. Layer 3, often referred to as the application layer, encompasses decentralized applications (dApps) and various user-facing services, such as gaming and DeFi interfaces. This layer utilizes the capabilities of Layers 1 and 2 to create seamless and efficient user experiences in areas like decentralized finance, NFTs, and gaming. For instance, Solana facilitates developers to construct scalable dApps while providing high transaction speeds and low fees. As the blockchain landscape continues to evolve, understanding these layers will help users and developers make informed decisions about building and engaging with blockchain technologies.