Layer 2
Blockchain InfrastructureUpdated: October 15, 2025
Also known as: L2, Second Layer, Scaling Solution
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Solutions built on top of Layer 1 blockchains to improve scalability and reduce transaction costs
Solutions built on top of Layer 1 blockchains to improve scalability and reduce transaction costs.
Layer 2 solutions process transactions off the main chain and then settle batches of transactions on Layer 1. Examples include Lightning Network for Bitcoin and Arbitrum/Optimism for Ethereum.