I'm not sure if this qualifies as proof of stake, proof of work, or neither - but I've just heard of SpaceMesh[0], which seems to be a well thought out alternat

I'm not sure if this qualifies as proof of stake, proof of work, or neither - but I've just heard of SpaceMesh[0], which seems to be a well thought out alternative to Ethereum. If I understand correctly, it's "proof of space" (in the sense that scrypt requires space whereas bcrypt requires just work; spacemesh requires space, not just work). Haven't had a chance to really look at the implementation though (its on github) [0] https://spacemesh.io/ https://spacemesh.io/