1. 🔥 Altcoin Season Index (90‑day performance)
BlockchainCenter’s Index: Tracks the top 50 altcoins vs. Bitcoin. Above 75 = altcoin season, below 25 = Bitcoin season tradingview.com+14blockchaincenter.net+14coin360.com+14.
CoinMarketCap’s Index: Analyzes top 100 altcoins; updated daily. Uses the same 75/25 threshold rule insidebitcoins.com.
Bitget’s Index: Shows current reading (~26), indicating it’s still Bitcoin season crypto.ro+1coin360.com+1.
These indices provide quick real-time snapshots of market structure.
2. Bitcoin Dominance (BTC.D)
A declining BTC dominance (below ~60%) signals capital rotation into altcoins tradingview.com+3coin360.com+3tradingview.com+3tradingview.com+12coinstats.app+12tangem.com+12.
Watch support levels like 63.5–64%: breaking below them often precedes full altcoin season coinmarketcap.com+15cryptorank.io+15coin360.com+15.
Visual charts via TradingView help track this live coinmarketcap.com+10tradingview.com+10coin360.com+10.
3. Altcoin Dominance (Others.D)
The inverse of BTC.D, this tracks non-BTC altcoin market share .
A rising trend in Others.D signals growing altcoin investment.
4. Trading Volume & ETF Net Flows
Rising altcoin trading volume or spot ETF outflows from Bitcoin (e.g., recent ~$–47M in net BTC ETF flow) indicates capital moving into altcoin markets tradingview.com.
Monitoring volume shifts between BTC and top altcoins is key.
5. Technical & Sentiment Triggers
Technical breakouts in major alts vs. BTC pairs often kickstart broader rallies tradingview.com+9coin360.com+9tangem.com+9.
Increased social media buzz, DeFi/NFT engagement, and news loafing around alt-narratives serve as qualitative confirmation.
✅ Real-Time Watchlist
MetricWhere to TrackKey Signal for AltseasonAltcoin Season IndexBlockchainCenter, CMC, BitgetIndex > 75 = YESBTC Dominance (BTC.D)TradingView, CMC chartsBelow ~62–64%, heading downAltcoin Dominance (Others.D)TradingViewRising trendVolume Flows & ETF DataCMC Live, CoinGlass, BitgetAltcoin volume + ETF BTC outflowsPrice BreakoutsTradingView alt/BTC pairsConsistent breakouts across major altcoins
🧭 Summary
Right now, Bitget shows an index value around 26, BTC.D is hovering near 63–64%, and altcoin volume is modest. This suggests we are still in Bitcoin season—but keep close watch for:
Altcoin Season Index crossing >75
BTC.D breaking firmly below 63–64%
Altfolio volume surging and breakout moves across big altcoin
