1. You can't guarantee they'll destroy them. If you're in a situation that requires that level of caution, then you should run your own relays.
2. I disagree with your premise that Nostr is a gossip network. It's explicitly not. The outbox/inbox model is predicated on user choice and clients doing their best to respect that choice.
Harvest now, decrypt later is only solved by better crypto (PQ in this case) or controlling the whole stack (incl relays).
2. I disagree with your premise that Nostr is a gossip network. It's explicitly not. The outbox/inbox model is predicated on user choice and clients doing their best to respect that choice.
Harvest now, decrypt later is only solved by better crypto (PQ in this case) or controlling the whole stack (incl relays).