Crypto Market Update Tip: Keep an eye on the Bitcoin dominance index (BTC.D) 📈—it shows the percentage of the crypto market's total value held by Bitcoin 🪙. A rising dominance usually signals a shift toward Bitcoin as investors move away from altcoins 🛑. A falling dominance may indicate an altcoin season 🌈. Use this as a guide to adjust your trading strategy for the current market cycle 🔄.