In the previous class, 36, we explained that it is not the work in proof of work (POW) that makes blockchains unscalable, and we talked about the elements that make these kinds of networks limited in this dimension.
In a similar vein, in this class, 37, we will explain that POW blockchains are not inefficient because they require so much computing power and electricity to achieve consensus.
Indeed, the high cost of producing the cryptographic stamp is precisely the point of these systems!
This is because proof of work is the only mechanism that enables consensus with the highest security guaranty known to man.
To learn more about ETC please go here: ethereumclassic.org