1. Bitcoin dominance starts to fall Bitcoin Dominance (BTC.D) drops below key levels (for example, 50–48%). This means that capital is moving into altcoins.

2. BTC starts to flatline or grows sluggishly If BTC is rising too quickly - it "eats up" attention and liquidity. Altseason more often starts when BTC is stable or moderately correcting.

. ETH starts showing strength against BTC ETH/BTC pair rises (for example, above 0.06–0.07). This is a "switch" of interest from BTC to altcoins.

4. Growth of mid-cap altcoins (top-20 to top-100) The first signals - altcoins ranked 20–100 suddenly surge ahead (for example, ARB, RNDR, FTM, OP). It's like "the stove has heated up" before a growth explosion.

5. High interest in niche sectors: DePIN (for example, HNT, IOTX) AI (FET, AGIX, RNDR) Layer 2 (ARB, OP, ZKS) DeFi and LSD (LDO, AAVE, RPL) Meme coins (DOGE, PEPE, WIF) - often come at the end of the cycle.

6. Altseason Index or Bitcoin Dominance Tools If the Altseason Index > 75 - it means altseason is already in full swing.

7. Social signals Trends on Twitter / Telegram: more discussions about "which altcoins to buy" Google searches: "best altcoins to buy now", "crypto gems" Increased activity on Reddit/Discord regarding altcoins.

8. Rotation from stablecoins Strong outflow from USDT/USDC into ETH and altcoins - capital is "going into battle".