The getzmqnotifications command allows users to retrieve details about the currently active ZeroMQ notifications. It returns a list of JSON objects, each containing information about a specific notification, including its type, publisher address, and outbound message high water mark.

How is this used?

This command is essential for users who utilize ZeroMQ notifications in their Bitcoin application or infrastructure. It provides insight into the types of notifications being received, along with the associated publisher addresses and message handling settings. Understanding active ZeroMQ notifications is crucial for monitoring and integrating Bitcoin-related events and data streams into external systems and applications effectively.