According to Michaël van de Poppe, the correlation between CNH/USD and ETH/BTC is a strong regime indicator for altcoin bull and bear markets, with both now in an uptrend after bottoming in April; source: Michaël van de Poppe (@CryptoMichNL) on X, Sep 28, 2025. He states both CNH/USD and ETH/BTC bottomed in April similar to the 2019 low and are currently correcting within an uptrend, implying momentum has not been lost; source: Michaël van de Poppe (@CryptoMichNL) on X, Sep 28, 2025. He concludes this setup marks a buy-the-dip period for altcoins, guided by the CNH/USD and ETH/BTC correlation signal; source: Michaël van de Poppe (@CryptoMichNL) on X, Sep 28, 2025.