We do support basic WoT search with keywords using NIP-50; in addition to standard relay filters (kind, author, timeframe, etc), you can define a keyword and define the “observer” (what you call “wot_base”). We don’t yet have a “trending” feature per se, which would probably entail adding up reactions, replies, and zaps from verified sources, but that sort of thing is definitely on our roadmap. The problem with most “trending” features in nostr today is that they’re not personalized, they don’t know how to get rid of the spam effectively, and they still manage somehow to be popularity contests. Our roadmap addresses each of those issues.

https://brainstorm.world/developers/nip-50