Layer 2 (L2)

List of top Layer 2 (L2) coins by market cap. The current Layer 2 (L2) coin market cap is $4.37B , which has changed by -4.67% in the past 24 hours; the Layer 2 (L2) coin trading volume is $22.78M, which has changed by +0.02% in the past 24 hours. There are 61 cryptocurrencies in the Layer 2 (L2) coin list today.
Layer 2 refers to a secondary framework or protocol that is built on top of an existing blockchain (Layer 1) to improve scalability and transaction efficiency. These solutions process transactions off the main chain or in batches, significantly reducing congestion and lowering gas fees while maintaining the security guarantees of the underlying blockchain. Common Layer 2 solutions include payment channels like the Lightning Network, sidechains such as Polygon, rollups including Optimistic Rollups and Zero-Knowledge Rollups, and plasma chains. Layer 2 technologies enable faster transaction speeds and lower costs without requiring changes to the base layer, making them essential for mainstream cryptocurrency adoption and improving user experience in decentralized applications. By handling high transaction volumes off-chain or in compressed form, Layer 2 solutions allow blockchains to scale from processing dozens of transactions per second to thousands, while periodically settling final transactions on Layer 1 for security and finality.