🚨 THIS IS EXACTLY WHEN MEGA ALTSEASON COULD START, and the chart shows why.
Bitcoin dominance has been grinding sideways for over a year now, sitting in that dense 58-60% zone. Compare that to 2017 and 2021, when dominance actually crashed, sending capital flooding into altcoins. That crash never happened in 2025. Dominance kept climbing instead.
Now look at the structure forming: BTC.D is printing a clean series of lower highs, with major support sitting at 57.8%.
Here's the fork in the road. Break below 57.8%, and the long-awaited broad altseason gets its green light. Hold that level and reclaim above 61%, and Bitcoin keeps leading the market while altcoins keep bleeding relative value, business as usual.
Fresh data suggests the first crack may already be forming. Dominance just slipped below 59% in the past day, altcoin trading volume has surged to nearly four times Bitcoin's, the highest since September 2025, and ETH/BTC just broke a downtrend that had held for almost five years.
Worth the caution here: falling dominance alone hasn't been enough before. Just weeks ago, altcoins added $215 billion in three days while dominance stayed elevated, a move that fizzled without confirming a real rotation. The market's watching for follow-through, not just a single dip.
57.8% is now the line separating "another head fake" from "the rotation everyone's been waiting a year for."
#Bitcoin #Altcoins #Crypto #Altseason #BTC