Alternative cryptocurrencies (Altcoins) often follow Bitcoin due to increased market sentiment, rapid price increases, and growing dominance in the cryptocurrency market.

*To determine if the altcoin season has begun:*

- We can look at the performance of the top altcoins compared to Bitcoin over the past 90 days.

- According to the Altcoin Season Index (CMC Altcoin Season Index), altcoin season is defined as when 75% of the top 100 coins outperform Bitcoin.

*Current market sentiment:*

- The Altcoin Season Index (CMC Altcoin Season Index) provides instant insights into whether the market is in altcoin season.