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.