BTC dominance just hit 60%. Three things smart money tracks when this level hits — and most traders miss all three. Number one: altcoin bleed. When BTC dom crosses 60%, alts lose 30 to 50 percent of their BTC pairs — even if the dollar price looks fine. You need to check BTC-denominated charts, not just USD. Number two: stablecoin supply ratio. The SSR is compressing right now — dry powder is stac…