Prompt: nostr how would a virtual relay based on geohashes work?
Perplexity.ai:
A virtual relay based on geohashes in the context of Nostr would work by routing messages or events according to geographic regions encoded as geohash tiles. Here’s how such a system functions in general terms:
- The covered geographic area is divided into geohash tiles—rectangular regions encoded as short strings where more characters mean more precise (smaller) areas.
- Each geohash tile or group of tiles is assigned to a specific virtual relay (or broker).
- When a Nostr client sends an event containing geospatial coordinates, the system calculates a geohash from those coordinates.
- It then matches this geohash to the smallest corresponding geohash tile in the routing rules.
- Based on the matched geohash tile, the event is routed to the appropriate virtual relay responsible for that geographic region.
- This allows traffic and events to be partitioned geographically, optimizing message distribution and possibly reducing load by localization.
- The size and assignment of geohash tiles to virtual relays can be dynamically adjusted for efficient scaling and load balancing.
In essence, a virtual relay using geohashes acts like a location-aware router for Nostr events, forwarding events to relays that manage specific geographic tiles encoded by geohashes. This is conceptually similar to how messages in vehicle-to-everything (V2X) communication systems are routed based on location geohashes.
Nostr itself is a decentralized protocol where relays store and distribute events. A geohash-based virtual relay would augment this by adding spatial awareness to message routing, directing events to relays that handle events from specific geospatial areas.
This method leverages geohashing's hierarchical spatial encoding—larger tiles cover broad areas, smaller tiles pinpoint finer locations—enabling scalable decentralized message routing based on geography within the Nostr network or similar decentralized systems[1][6][8].
Citations:
[1] System and methods for edge-based geo-aware routing
https://patents.justia.com/patent/12328657
[2] sandwichfarm/nostr-geotags - GitHub

GitHub
GitHub - sandwichfarm/nostr-geotags: Given some geodata, will generate an array of standardized geo ['g'] tags for inclusion in nostr event.tags
Given some geodata, will generate an array of standardized geo ['g'] tags for inclusion in nostr event.tags - sandwichfarm/nostr-geotags
[3] What is Geohashing? Examples and Use Cases - PubNub

PubNub
What is Geohashing?
An introduction to geohashing and example use cases.
[4] Geohashing Algorithm | Proximity Search Based Applications
[5] What is Geohashing? - DEV Community

DEV Community
What is Geohashing?
Geohashing (or geohash) is a geocoding method used to encode geographic coordinates (latitude and...
[6] Nostr's Technical Architecture: The Basics - by Craig - Substack

Nostr’s Technical Architecture: The Basics
Nostr is a protocol, not a platform.
[7] Geohash: the algorithm inside and out - Part 1 - YouTube
[8] Exploring the Nostr Ecosystem: A Study of Decentralization ... - arXiv
Exploring the Nostr Ecosystem: A Study of Decentralization and Resilience
[9] What is GeoHashing? - by Ashish Pratap Singh

What is GeoHashing?
Imagine you’re building a system like Uber, Google Maps, or a nearby restaurant finder.
[10] GitHub - aljazceru/awesome-nostr

GitHub
GitHub - aljazceru/awesome-nostr: nostr.net - awesome-nostr is a collection of projects and resources built on nostr to help developers and users find new things
nostr.net - awesome-nostr is a collection of projects and resources built on nostr to help developers and users find new things - GitHub - aljazce...