According to Cas Abbé, traders should monitor four key checkpoints to confirm altseason momentum: Bitcoin (BTC) holding above $115,000, BTC dominance below 58%, Ethereum (ETH) demonstrating relative strength through sustained ETF inflows, and the TOTAL2 market cap (which tracks altcoins excluding BTC) continuing its upward trend. If these conditions align, robust altcoin market momentum is indicated, offering strategic entry points for crypto traders (source: Cas Abbé).