Why can’t hashes have letters a,i,l,b,n, or m?
migrating to georelays on bitchat. find the closest relays for any one geohash and use them instead of the big default ones.
https://github.com/permissionlesstech/bitchat/tree/feat/georelay
hopefully this will inspire more relay ops to accept kind 20000 and better distribute relays globally (we need more smaller ones).
Discussion
That's how geohash works.
They should’ve used What3Words !
They likely used geohash due to being public domain, instead of the proprietary what three words. Similar concepts though, there are others as well.