here are a couple good links:

https://github.com/nostr-protocol/nips/blob/master/05.md

https://thebitcoinmanual.com/articles/nostr-account-nip-05-verified/

in the case of LN+, I could see each node runners profile having a field where you can enter your npub. This would automatically setup the Nip-05 verification on lightningnetwork.plus. Then node runners could communicate over nostr and have verification the node runner they are interacting with on LN+ is the same person they are interacting to over nostr