Bitcoin didn’t just solve digital scarcity. It solved digital time. In the physical world, events cost energy. If you cook an egg, you cannot make it raw again. If concrete hardens, you cannot turn it back into liquid. Energy was spent. The past becomes fixed. Digital systems don’t work like that. A file can be edited. A date can be changed. A record can be rewritten. Digital history is cheap. Now AI makes generating convincing text, images, and even fake “history” almost free. So how do you prove something actually existed at a specific moment? Bitcoin answers that quietly. Every ten minutes, the network spends real energy to seal a block of history. That energy must be physically consumed. Once something is recorded, changing it would require redoing that work while the rest of the network continues forward. As blocks accumulate, rewriting the past becomes increasingly expensive. The internet gave us infinite information. Bitcoin gives us irreversible history. In a world flooded with synthetic content, proof of time may become more valuable than the content itself.