First, humans exchanged commodities. You could eat it, burn it for energy, modify it to create tools or jewelry. You exchanged something useful for something useful.

* It was energy.

Then, humans exchanged commodities for gold. You couldn't eat it or burn but it was still possible to modify it.

* It was poor energy.

Then, humans used papers checks or bank notes. It wasn't very useful, but you still could burn it during a very cold winter.

* It was very poor energy.

Now, we wants to use Cryptocurrencies. You can't do anything with it.

* It is not energy but proof of destruction of energy.

Something looks wrong. We should exchange potential energy, not destroyed energy.