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 alts.

2. BTC starts to flatline or grows sluggishly If BTC is rising too quickly — it "consumes" attention and liquidity. The altseason often begins when BTC is stable or moderately correcting.

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

4. Growth of mid-cap altcoins (top 20 to top 100) The first signals — altcoins from 20–100 place are sharply breaking ahead (for example, ARB, RNDR, FTM, OP). It's like "the stove has warmed up" before the explosion of growth.

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) Memecoins (DOGE, PEPE, WIF) — often come at the end of the cycle.

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

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

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