Overview

This section provides a high-level overview of the components that make up a ZKsync Chain.

The main components of each ZKsync chain are:

• ZKsync OS: A new “operating system” for ZKsync Chains.
• ZKsync OS Server: The new high-performance sequencer for ZKsync OS.
• ZKsync Airbender: A horizontally scalable implementation of the ZK proof generator.
• Block Explorer: An API and user interface for exploring transactions and verifying contracts.
• Portal: A user interface for bridging and sending assets, and viewing a wallet's transaction history.
• Fee Withdrawer: A tool to automate the transfer of collected fees from a ZKsync chain to a base layer address.