Gigi has one of the best articles about it. Bitcoin is time. I'm not sure time is energy, but clocks and watches require energy to keep time. The timestamp server on this peer to peer network requires energy to keep time just like every other clock.

That's why I don't waste any time with shitcoins. People ask me, "What do you think of Voldemort coin(or whatever)?"

I think Bitcoin is a new clock. Time is money, but don't let this distract you. If it ain't broke, don't try to fix it. The fiat monetary system is broken and chock full of bailouts. Satoshi put a secret message about bailouts for banks in the script hash of the Genesis Block. He discovered a new clock that solved this problem.

Bitcoin solved the double spending problem. Voldormort does not solve the double spending problem. It changes something in the new clock Satoshi discovered. Adding a 13th number to a clock doesn't solve any problems. Neither does changing the addresses to begin with an "r" instead of "bc1"...but that's basically what Voldemort coin did. Adding 13 numbers to a clock doesn't have much of a use case.