Comment by impossiblefork
2 hours ago
No, you always send a dummy message the appointed time.
If you have a real message, or a network maintenance message, that substitutes for a dummy message. You never send messages other than at the appointed time.
Delayed or dropped messages won't matter, since you only send a message at the appointed time. So the network is literally indistinguishable from one where you have sent no messages to all participants and to even someone with complete control of the network.
Do messages have a visible receiver address of any kind? In that case, you're out of luck. The only way to do make this statistically sound would involve an insane amount of messages, rendering it impossible.