What is a blockchain Layer 1 vs. Layer 2?
The term Layer 1 refers to the base level of a blockchain architecture. It’s the main structure of a blockchain network. Bitcoin, Ethereum, and BNB Chain are examples of Layer 1 blockchains. Layer 2 refers to networks built on top of other blockchains. So if Bitcoin is a Layer 1, the Lightning Network that runs on top of it is an example of a Layer 2.
Blockchain network scalability improvement can be categorized into Layer 1 and Layer 2 solutions. A Layer 1 solution will change the rules and mechanisms of the original blockchain directly. A Layer 2 solution will use an external, parallel network to facilitate transactions away from the mainchain.
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