You have the pubkey field to select to those duplicates if you like. It’s up to the relays to return the latest created event with those d-tags when a client is requesting it.
If we track only by kind:pubkey:d-tag, what happens when a kind receives comments and zaps, but the d tag is later updated? How can we track it again along with its related comments and zap kinds?
Additionally, if a bookmark is deleted after receiving some zaps and comments, and later the user creates a new bookmark with the same URL, will the previously deleted comments and zaps be mistakenly linked to the new bookmark, even though they are not actually related?
Additionally, if a bookmark is deleted after receiving some zaps and comments, and later the user creates a new bookmark with the same URL, will the previously deleted comments and zaps be mistakenly linked to the new bookmark, even though they are not actually related?