I don't get it, what is this used for?
Discussion
“Relays Oblivious HTTP requests to protect IP metadata in the Payjoin v2 protocol”.

Cool 😎
So, it's a two hop onion route?
yes
Cool.
But why not just use Tor?
V1 tried and failed. This works without the complexity
Can you elaborate?
Tor takes forever to start up and make circuits, has its own consensus, and will likely never be packaged in the most popular consumer apps. Think Cash App.
OHTTP has browser and native OS support. It’s just crypto sprinkled on HTTP. Client complexity trades with this manual infrastructure set up by wallets & services which is the right one for payjoin where clients’ barriers have been too high.