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A dead man’s switch triggers actions if you stop responding. The existing ones — Aeterna, LastSignal — require periodic manual check-ins. That works. But Nostr already has a better signal: every post, reaction, zap, and repost is a cryptographically signed event tied to your public key. Your normal usage is proof of life. I built nostr-dead-man-switch to use that signal. It subscribes to relays, watches for any event from my npub, and resets its timer on activity. If I go quiet for long enough and don’t respond to warning DMs, it fires off emails, webhooks, or Nostr notes to the people who need to know. ...