Unlocks a seal event and returns the rumor event
Unlike the getters, this throws rather than returning undefined: it is an imperative operation on one caller-chosen event with a non-optional return type, not a read applied across a timeline, so there is no observable for a throw to tear down.
If the seal does not yield a usable rumor — including an invalid seal signature, unparseable content, or a rumor whose author does not match its seal
Unlocks a seal event and returns the rumor event
Unlike the getters, this throws rather than returning undefined: it is an imperative operation on one caller-chosen event with a non-optional return type, not a read applied across a timeline, so there is no observable for a throw to tear down.