What is a “trusted” user?
this is similar to asking how many users are using email or how many people browse the web. we really don't have an accurate count for those. we can have educated guesses and estimates though. nostr is no different here.
According to nostr.band, Nostr consists of the following:
Pubkeys: 35,067,097
Users: 1,067,394
Trusted users: 188,773
you can learn more about nostr.band's trust rank here: https://trust.nostr.band/
nostr:note1x9rj6k88s4e62qlktz0s6dp5jghyqgpprv4qgrk649gvudspz9esprwtnt
Discussion
Follow the attached link. It’s basically a known user that isn’t a bot or a spammer.