Layer 2 protocols

Current layer 1 blockchains have limited scalability and privacy. In fact, layer 1 blockchains will remain the bottleneck for scaling Web 3 applications. Current layer scaling solutions include sidechains and on layer 2 state channels, optimistic rollups and zero knowledge rollups. In 2021, the adoption of the first layer 2 protocols started. Best known are the Lightning network on Bitcoin and Ethereum scaling solutions such as Optimism, Arbitrum, Starkware & Polygon.

An overview of the layer 2 blockchain ecosystem

All layer 2 blockchain protocols

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Layer 1 Blockchains

We list all layer 1 protocols and share their best onboarding resources and blockchain insights.

Blockchain Scalability Research

Our blockchain knowledge base includes a section on blockchain scalability with up-to-date research on scaling approaches. 

Awesome layer 2 blockchain projects

Virale shared a good collection of layer 2 blockchain solutions on Github.

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