It is analyzed from the essential structure of the blockchain. Functionally, the blockchain system can be divided into three parts: Execution layer: execute transactions; Consensus layer: Verification and consensus on transaction execution results; Data Availability Layer: Storage of transaction raw data. At present, Ethereum's hot Layer2 is an attempt to modularize and separate the execution layer.

It is analyzed from the essential structure of the blockchain. Functionally, the blockchain system can be divided into three parts: Execution layer: execute transactions; Consensus layer: Verification and consensus on transaction execution results; Data Availability Layer: Storage of transaction raw data. At present, Ethereum's hot Layer2 is an attempt to modularize and separate the execution layer.