According to @AltcoinGordon, a BTC all-time high confirms the broader bull run, while an ETH all-time high confirms altseason. Source: @AltcoinGordon on X (Aug 17, 2025). The author states that after ETH last set a new ATH, altcoins rallied about 200% over the following two months. Source: @AltcoinGordon on X (Aug 17, 2025). The post adds that ETH is currently about 10% below its ATH, positioning a potential trigger for altcoin outperformance under this framework. Source: @AltcoinGordon on X (Aug 17, 2025).