"... if you fix this problem, you reintroduce centralization. You have a central authority." I guess that was true until recently, about 2009. Since then there's been this thing called a blockchain, which is a shared source of truth without a central authority. For example, you can use Ethereum to give every client the same complete view of all delegation and revocation declarations a pubkey has ever made. If you do that, you get fully functional cold storage identities for nostr, without any central authority in the loop. 👇