According to @rovercrc, the altcoin market cap is about to explode, signaling a bullish sentiment shift for altcoins (source: @rovercrc on X, Sep 15, 2025). The post does not provide a timeframe, metrics, or charts to validate the call, so it functions as a sentiment headline rather than a data-backed signal (source: @rovercrc on X, Sep 15, 2025). Traders should treat this as unverified until corroborated by independent market confirmation, as no evidence was supplied in the source post (source: @rovercrc on X, Sep 15, 2025).