@raffy.eth
I wrote some docs for TheOffchainResolver, which enables gasless offchain over DNS today and (will) enable 2-tx 0-contract offchain for ENS names. One wildcard DNS TXT record will connect ∞-subs to a CCIP backend.
https://discuss.ens.domains/t/gasless-offchain-for-dns-and-ens-via-theoffchainresolver/18783