OK, I cannot estimate how much energy would be saved, or more would be wasted, unless we have this chain running.

However, even more energy were burned, now it is not for the chain security only, the computation is used for a honest proof of the user data storage.

I think it is risky/difficulty to change Bitcoin into a storage blockchain now. But Im planning to make a storage chain with this design.

Beside, the tasks are the storage requests. In this era, we generates data any moment. So ideal there are enough tasks making the blockchain security.

And yes, more feedbacks, please.