nostr:npub10940z6cfs9wndhte7mkgw7tw79k68pp5z0k84weuph5swvsrn2xqrm2wum Hi! Your website has been so useful to me. Thank you! One thing I’m unclear on: Is my username unique *across* the Fediverse?
e.g: I am riocarmine [at] mastodon.social but could someone else be riocarmin [at] some other instance? Thanks for your help.
nostr:npub10c35n4zf89n8cq7u4cs30gxdu9e02je83uuf3kmwxlnxm05tzugqmg4fqd
Short answer: someone else can use the username on another instance but not on your instance.
Longer answer:
Your unique address is the combination of a username on a particular instance:
@ (username) @ (instance)
It's the same with email addresses, if you register JohnSmith on Gmail that doesn't mean you are JohnSmith on Yahoo Mail.
It works like this because there's no central service keeping track of everyone. Each server is totally independent.
