Governments have always backed their money with force. You pay taxes in dollars because the IRS can freeze your accounts and, if you cheat, put you in prison. That demand is a big part of why the dollar has value at all. Bitcoin works differently. Mining one block today takes more than 10^23 hash computations. Miners in places like West Texas burn real electricity, buy real hardware, and compete with every other miner on earth for thin margins. All that spending is what makes new bitcoin scarce. Sound money people have always said money should cost something to produce. Gold did, for centuries, because geology and metallurgy limited the supply. Central banks loosened that limit in stages, and Nixon closed the gold window in August 1971. Since then, M2, the broad measure of the US money supply, has grown from roughly $685 billion to more than $21 trillion. We all paid for that through higher prices. Bitcoin brings the constraint back, and nobody has to give permission. The protocol resets mining difficulty every 2,016 blocks, so a new block arrives about every ten minutes no matter how much computing power joins. No central banker can call a Saturday meeting and double the supply. That matters because money that costs nothing to make lets governments pay for wars, bailouts and surveillance without raising taxes to the point of revolt. With proof-of-work, you either spend the energy or you don't get the coin. That makes it the most subversive idea in the history of money.