But it’s still proof of work, right? If it has a ratchet like bitcoin, it becomes uneconomical to mine at some point. I think proof of space-time (Bram Cohen’s

But it’s still proof of work, right? If it has a ratchet like bitcoin, it becomes uneconomical to mine at some point. I think proof of space-time (Bram Cohen’s and spacemesh.io’s currencies are examples) is a better way forward.