"The Publisher receives a notification for any annotations made on their site which are explicitly published publicly. There are two proposed mechanisms for this:

1) a client-side event which informs the page of the annotation's publication URLs;

2) a server-side notification sent to the publisher's “well-known” contact address.

Either or both of these mechanisms may be used, each with its own use cases." https://www.w3.org/annotation/diagrams/annotation-architectu...