Layer-2 refers to a network or technology that operates on top of an underlying blockchain protocol to improve its scalability and efficiency . … For instance, Bitcoin is a Layer-1 network, and the Lightning Network is a Layer-2 solution built to improve transaction speeds in this fashion on the Bitcoin network.
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Layer 2 is a term used for solutions created to help scale an application by processing transactions off of the Ethereum Mainnet (layer 1) while still maintaining the same security measures and decentralization as the mainnet . Layer 2 solutions increase throughput (transaction speed) and reduce gas fees.
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