Events of [kind `5`](09.md) may contain a "p" tag instead of "e" tags. The "p" tag MUST match the `pubkey` of the signed event, and this event indicates that the author wishes for relays and clients to stop showing events for this pubkey, and to reject future events from the pubkey.
Clients may give users the option to "Revoke your public key" with this type of event. Clients SHOULD display a prominent message explaining that the action is not reversible, SHOULD explain that this does not guarantee their posts are deleted forever, and SHOULD require special confirmation such as requiring the user to type a message.
Clients MUST NOT show the content field in the event for security reasons.
Relays receiving a pubkey revocation event MUST mark the pubkey as revoked, and MUST stop delivering events from this pubkey to clients, EXCEPT for events of kind `5`. Relays MAY delete events by this pubkey from their database, and SHOULD reject future events from the pubkey.