nostr works in a similar manner because every event is signed by the poster's nostr key. It doesn't necessarily have to be PGP, that's just where the WoT idea originated.
Discussion
I was a (Insert Certificate Authority who sponsored it) WoT notary back in the day. It was fun. Local tech companies (mainly Sun Microsystems) would host meetups where a bunch of us notaries would show up and 'notarize' individuals.
But... I literally had files of peoples details. Once I realized how dumb that was, I shredded it all despite the terms of being a WoT Notary requiring that I keep them for like 3 years(?).
But Spencer, I read you as supporting - but just like I'm doing here (and with every social network). I follow a few that I know/trust, and then see who they follow. Informal. Organic.
yeah, the way I've understood it from many conversations with nostr:npub1ye5ptcxfyyxl5vjvdjar2ua3f0hynkjzpx552mu5snj3qmx5pzjscpknpr, these nostr networks represent a newer, organic, distributed "trustless" web of trust we each build out on our own