Oddbean new post about | logout
 The message defining those could be signed on a hardware device though, keeping the master key offline 
 Yes.

I haven't changed email providers or DNS providers in years. Once nostr settles down, changing relays will be a rare enough thing that requiring the master key to do it doesn't seem overly onerous to me. 
 I haven't changed email providers in years too, in fact I never changed, because it's impossible!