Bitcoin shows this signal for the first time in 2026. Here’s an on-chain metric I think is worth paying attention to: Bitcoin Realized Cap has finally started to rise again. Realized Cap is completely different from the regular "market cap." Regular market cap is: BTC current price × circulating supply But Realized Cap recalculates the value of each BTC based on the price it last moved on-chain. So it’s more like observing: Whether the actual capital invested in Bitcoin on-chain is increasing or retreating. And now, the most critical thing has happened After a long period of decline, Realized Cap has started to rise again for the first time in 2026. When was the last time we saw a very similar structure? January 2023. At that time, Bitcoin had just gone through a prolonged bear market, and Realized Cap stopped declining and began to expand again. What happened next is something everyone knows: BTC kicked off a multi-year major rally. The truly important thing about this indicator isn’t that "history will definitely repeat itself," but the capital structure it represents: Realized Cap ↓ ＝ On-chain capital contraction Realized Cap ↑ ＝ A new cost basis is forming, and on-chain capital is expanding again So what I’m increasingly focused on isn’t: "BTC has already risen so much, is it still worth buying?" But rather: If the reversal of Realized Cap isn’t a short-term phenomenon, but the beginning of a sustained expansion phase— Then what we’re seeing now might not be the end of a rebound. It could be the start of a new wave of capital flowing back into Bitcoin. In 2023, the market gave us this signal once. In 2026, it’s happening again. Will it rhyme this time?