https://void.cat/d/BL8Ja4Bn2ujbt5k5WiheCW.webp

Profile Badges, Badge Awards, Badge Definitions

Users MAY be awarded badges (but not limited to) in recognition, in gratitude, for participation, or in appreciation of a certain goal, task or cause.

Users MAY choose to decorate their profiles with badges for fame, notoriety, recognition, support, etc., from badge issuers they deem reputable.

https://github.com/nostr-protocol/nips/blob/master/58.md