Mining is a proof of work there need not be a reward ("bitcoin") attached to it. Banks and large entities can mine, expand the blockchain, in order to prove the validity of contracts - not necessarily in order to "mine" bitcoin.
There's blockchain technology being developed by big banks that don't require miners in the Bitcoin sense. The blockchain is there to show, for instance, that document x was signed at a set date/time by parties a,b and c.
OK. My point was consumption of oil. And perhaps I wasn't precise enoughas saying "bullsh!t" is more of a comment than an answer:-)
You and I and others may not be direct consumers of oil but the trucks that deliver our food do. The farmers that grow the food use it. This food comes wrapped in plastic (I mean oil) and so on; and so on; and so on.
Not Carl Menger, not Böhm-Bawerk, not von Mises, not Hayek, not Ayn Rand, not Rothbard, not Milton Friedman. Please show me anyone associate with the Austrian or Chicago School who advocated this.
If it's so commonplace you ought to be able to name one.
All technologies are specialized at first and then spread out - whether it's printing or optical lenses or steam engines or whatever. It's good to speed up the process but the DIY maker movement has decentralized and come down in price remarkably fast. The technological barrier is one of knowledge - something that _mainly_ (not only) requires desire to learn.