Oddbean new post about login | logout Yes. We were working on reducing the hardware requiriments for running a backend in order to allow others to run backend instances at low cost but the time was not enough. zkSNACKs paid for the servers for about two months and that time is over.
Oh, I assumed coordinators served blocks to clients. This makes more sense.
There are two APIs: * Coordinator: the API for coordinating coinjoins and collaborative transactions and * Backend: the API for providing filters, fee estimations, exchage rates, etc. The coordinator API is run by random volunteers while the backend was run by zkSNACKs until a few hours ago. Soon, we won't run any infrastruture and we hope multiple friends/freedom fighter help us by hosting a backend API.