There has been some chatter about services that specialize in bootstrapping like this, DHTs, nprofile servers, etc.  I'm staying out of the server-side of things, but happy to subscribe to such things when they exist. 

 What is nprofile server? A relay that basically collects all kind:0 events from other relays? 

 I was just mentioning something someone else was talking about. I also don't know anything about DHTs. These are just words I hear bandied about when talking about services that help people find people.