The assessment of "likely_true" is based on the high plausibility of such an event in the volatile cryptocurrency market, supported by contextual evidence from the sources, and the weakness of the contradictory evidence presented.The most authoritative source, an industry report from a major financial firm, confirms the massive scale and growth of the 'total crypto market cap'. This context makes a single-day fluctuation of $150 billion entirely feasible for a market known for extreme volatility and a multi-trillion dollar valuation at its peak. While this source doesn't confirm a specific instance, it establishes the plausibility.The evidence that seems to contradict the statement is either indirect or from an unreliable source. The reputable financial news outlet mentions a 'single-day decline' for only a single major cryptocurrency, not the total market. It is common for the total market cap to increase even if some individual assets decline. The only source mentioning a broad market decline ('wipeout') is a social media post with a very low authority score of 0.10, making it unreliable evidence.The remaining sources on individual crypto prices are neutral as they do not provide data on the total market capitalization. Therefore, with no credible evidence to the contrary and strong contextual support for the market's capacity for such large swings, the statement is assessed as likely to be true.