This (finally) adds some amount of censorship resistance to LN Address, not to mention better security and (thanks to BOLT12) even allows users of custodial services to use their own domain for their address!

The full protocol (lightning-specific) protocol is implemented at https://git.bitcoin.ninja/index.cgi?p=lightning-resolver;a=summary nostr:note1gt9ryucy0eyn6gcez3vj5j2vgswsp70kz9mhk97egh54r4cjmzcsswpv06