All proof-of-work systems use the concept of solving a hard problem to pace the rate of growth of commits to a chain. Asking whether an approach has less power

All proof-of-work systems use the concept of solving a hard problem to pace the rate of growth of commits to a chain. Asking whether an approach has less power consumption than another approach misses the point: all PoW systems maximize energy expenditure to maintain the security guarantees of the chain. Neither does this one have ASIC resistance which means that capital-intensive fabs can be set up to produce chips that perform these operations faster than general purpose CPUs. If you can run more attempts per second than the other guy, then you’ll mint more blocks over time as well. This is a cool algorithm, and my hat’s off to the authors. However, it doesn’t make PoW green or accessible.