nips/09.md

NIP-09

Event Deletion

draft optional

Event kind 5 describes a deletion event. It MUST contain a list of e or a tags, each referencing the events the author is requesting to be deleted.

a tags request the deletion of all past versions of a replaceable event: all versions whose .created_at is less or equal to the deletion request's created_at.

The .content MAY contain the reason for the deletion. k tags MAY be added to describe the kinds of the referenced events.

{
  "kind": 5,
  "pubkey": <32-bytes hex-encoded public key of the event creator>,
  "tags": [
    ["e", "dcd59..464a2"],
    ["e", "968c5..ad7a4"],
    ["k", "<kind of dcd59..464a2>"],
    ["k", "<kind of 968c5..ad7a4>"],
    ["a", "<kind>:<pubkey>:<d-identifier>"]
  ],
  "content": "these posts were published by accident",
  ...other fields
}

Supporters MUST verify if the pubkey of the Deletion event is the same as the pubkey of the referenced events.

Relays SHOULD delete or stop publishing any referenced events of the deletion request.

Relays SHOULD continue to publish/share the deletion events indefinitely, as clients may already have the event that's intended to be deleted.

Clients SHOULD hide or otherwise indicate a deleted status for referenced events.

Clients SHOULD broadcast deletion events to other relays that don't have it.

Deleting a Deletion

Publishing a deletion event against a deletion has no effect.