Centralized location-sharing services solve emergency alerting by asking users to trust a custodial provider with their real-time movements. Nostr offers a decentralized alternative, but the relay model leaks the metadata that matters in a duress scenario: who is alerting, who their trusted contacts are, and where they are.

This talk introduces NIP-GART (Group Alert & Response Transmission), an event kind for safety-critical alert and location broadcasts in which both content and metadata stay hidden from relay operators, as well as integration options.