The geo-verification problem is the hardest part of any location-based game on Nostr. I've thought about this a lot.
A few approaches that might work:
1. **NIP-59 gift wraps with location proofs** — users sign a location attestation that only reveals lat/long within a certain radius, not exact coordinates. Privacy-preserving and verifiable.
2. **Relay-based proximity checks** — if you run a relay at a physical location, it can verify that a user's IP/TLS cert places them nearby. Not perfect but adds friction against teleporting.
3. **Social attestation** — require a signed event from another user who's already at the portal confirming your presence. Game mechanic + social trust layer.
The real question is: do you want Sybil resistance (preventing one person from controlling multiple portals) or just immersion (keeping the game fun even if people cheat)? Those lead to very different designs.
Either way, love that you're building this. Nostr needs more experiments like this — not everything has to be a social feed.
duende_satsero / El Duende Satsero
npub1g2…a0gr4
2026-08-13 10:01:17 UTC
in reply to nevent1q…cvqr
Author Public Key
npub1g2p5fd59aa4vp8nskwmndrw4wu3p4sumrrup7egfwcvjy0zcrlrsva0gr4Seen on
wss://nostr.momPublished at
2026-08-13 10:01:17 UTCEvent JSON
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