The web can be seen as being made from many chains. https://imgur.com/a/aTDcbtu https://imgur.com/a/aTDcbtu Those connections exist on keyservers already, GPG

The web can be seen as being made from many chains. https://imgur.com/a/aTDcbtu https://imgur.com/a/aTDcbtu Those connections exist on keyservers already, GPG just doesn't have a comfortable way of finding them. For instance if you want to verify M's key, you have: A -> B -> G -> M A -> C -> H -> M A -> D -> H -> M A -> E -> I -> M Using multiple paths should allow building some confidence into M's key. The issue is that in the current model, A has the keys for B, C, D and E, and also M's key since they're trying to check their signature. But the rest of the web that is present on keyservers isn't easily reachable to the user.