$BTC dominance just flipped bearish on the 20-month SMA — what was support is now resistance. This is a classic macro signal that altseason rotation could be starting. When $BTC.D rolls over after holding support for that long, it usually means capital is moving into alts. Watch for confirmation with a clean break below and a failed retest. If it holds as resistance, we're likely entering a phase where alts outperform Bitcoin on a relative basis. Not a trade signal on its own, but definitely a shift in the broader risk appetite across crypto.