Key market indicators suggest a potential altcoin season as the altcoins/BTC ratio tests a four-year support zone. Historical patterns from 2017 and 2020 show similar consolidation phases before major altcoin outperformance. The current altcoin season index stands at 31, indicating a shift from Bitcoin dominance. Analysts highlight early momentum in the altcoin/BTC ratio, which has risen from a 12-month low of 12 in April 2025 to 0.12, marking a 7% gain in the latest trading session. This movement follows a series of lower highs since 2022, compressing into a zone that previously signaled altcoin advances.