System

Overview

System module provides low-level types, storage, and functions for your blockchain. All other pallets depend on the System library as the basis of your Subsembly runtime.

System module defines critical storage items for your blockchain. Some of them are:

• Account - stores account balance and nonce

• ExtrinsicCount - total extrinsics count for current block

• ParentHash - hash of the previous block

• Events - vector of events during block execution

And finally, it contains some important functions that access the storage, compute the extrinsics root, verify the origin of extrinsic, etc.