TOTAL3, a measure of the altcoin market cap excluding Bitcoin and Ethereum, is testing a long-term ascending channel support that has been influential since early 2024. The altcoin market cap is currently at a crucial weekly support level, marking a potential turning point. Traders are closely watching to see if the market can sustain its long-term structure or if it will enter a deeper corrective phase. A successful rebound could push TOTAL3 towards targets of $3.5 trillion and $3.7 trillion, while a break below the trendline might lead to a decline towards the $2.7 trillion to $2.8 trillion range.