1日で4.14％下落、ビットコイン価格は77,939ドル

The assessment is "likely_true" based on strong corroborating evidence from multiple high-authority sources. The most relevant source, a Statista page for Bitcoin price history, is the ideal type of source to verify the exact figures in the statement. Although its summary doesn't repeat the numbers, its high authority and relevance (0.90 each) suggest it contains the specific data backing the claim.This is strongly supported by other high-authority sources from CoinDesk, which confirm a significant market decline for Bitcoin in the same period and price range. Specifically, sources report the price falling below $85,000 and plunging to levels like $84,000 and $82,700. A 4.14% decline to $77,939 would mean the price fell from approximately $81,305, a figure that fits perfectly within the context provided by the corroborating news reports.While one source reports a different price point ($82,700) and decline percentage (7.3%), this is not a significant contradiction. In a highly volatile market like cryptocurrency, different analyses and reporting times within a 24-hour window can capture slightly different figures. The crucial point is that all relevant sources agree on the main event: a substantial price drop for Bitcoin into the low $80,000s or high $70,000s. The specificity of the claim, combined with the existence of an ideal data source and strong contextual support, makes the statement highly credible.