Mastodawn

#SayWhere Geocoding System: Human-Memorable Geographic Coordinates
[ based on #geohash ]

https://datatracker.ietf.org/doc/draft-saywhere-geocoding/

SayWhere Geocoding System: Human-Memorable Geographic Coordinates

This document specifies SayWhere, an open-source system for encoding geographic coordinates (latitude, longitude, and optional altitude) into human-memorable word phrases and decoding them back to coordinates. The system provides deterministic, reversible encoding with two-layer error detection (per-word parity and optional terminal word-phrase checksum) and supports three-dimensional positioning for multi-level structures. SayWhere introduces hierarchical variable- length phrases with true prefix relationships, enabling precision scaling from regional (1 word) to meter-level accuracy (6 words). The system uses the Bitcoin Improvement Proposal 39 (BIP-39) mnemonic wordlist for multilingual support and geohash spatial indexing for efficient location encoding.

IETF Datatracker

Wiener Pirat 🏴‍☠️Oct 26

Auf der Insel #Jamaika bereiten sich die Menschen gerade auf einen #Hurricane vor und nutzen zur Kommunikation #Bitchat!

Wünschen wir diesen Menschen alles Gute, damit alle überleben!

Die #Geohash Funktion von Bitchat kann echt nützlich sein!

Lam 'al Adie Sep 18, 2025

Morgen werden in #Münster tausend Leute über den #Geohash latschen und das nichtmal mitbekommen…

nomadmisha Sep 10, 2025

@wikipedia

Hello, Wikipedia! Why don't we add geohashes, in addition to regular coordinates, to the pages of countries, cities, and other geographical objects?

#geohash #wikipedia #geochat #bitchat #nostrchat

PulkoMandy Jul 14, 2025

it's not too hot and my urgent todo list is lighter than usual, so it's time for #todaysBikeRide and #geohash expedition again!

The geohash was in an unremarkable sunflower field, so I stopped 11m away, staying on the road. Good enough for me. I found an abandoned bus from the city of Nevers, pretty much the other side of France, with a very late 1990s livery. Also went to the nearby artificial lake and found "interesting" things in the tiny library

Lam 'al Adie Jun 6, 2025

Heute ist ein Tag zum Davonlaufen…
Beim #mdrza überholt mich ein Auto in einer Baustelle über den Linksabbieger des Gegenverkehrs.
Beim #mdrnh will ich gleich noch den #Geohash des Tages in #Bochum einsammeln. Der ist heute nur mit der Bahn erreichbar. Also ausschließlich, er liegt auf dem Gleis von GE bzw RE nach BO.

Anatoly Tsyplenkov Apr 15, 2025

Just learnt about the #quadbin spatial indexing. There is not much information about it compared to #geohash, #h3 or #s2. Has anyone worked with it before? Are there any pitfalls that I am missing, because it sounds freakin cool.

Sebastian Lasse Mar 12, 2025

Any deno kv experts out here?
For FLOSS ActivityPub Clients:
I am looking for best practices for a key which has a geohash as secondary index and might be searchable by Date as well, like an as `Event` with a `location`
:)

#deno #kv #keyvalue #denokv #geohash #database #activitypub