Rollups/layer 2 is a chain built on Ethereum, using the Ethereum mainnet as the settlement layer. Rollups can be thought of as a separate execution layer and send transaction packages back to the mainnet for verification. There are two types of aggregation. • Optimistic Aggregation • Zero-Knowledge Aggregation Read more about these here 4 ⃣ Blockchain Layers Blockchain can be divided into 4 different layers: 1) Execution Layer: Provides the environment for dapps and processes transactions from these. #ETH #crypto2023 #Binance