The assessment of the statement's truthfulness relies heavily on the single relevant and authoritative source provided. The DappRadar homepage is identified as a major data aggregator for the NFT market with high authority (0.90) and relevance (0.90). The summary explicitly notes that it is a "highly probable primary source for the given statistic." The nature of the claim—a precise weekly sales volume figure with a percentage change—is exactly the type of data DappRadar specializes in reporting.The remaining nine sources are correctly identified as irrelevant. They either cover different market segments (Bitcoin, Web3 gaming, fungible cryptocurrencies), are too specific (single NFT collections), or are secondary sources (blog posts). Importantly, none of the provided sources offer any contradictory evidence. The complete lack of conflicting information, combined with a single, highly credible, and relevant primary source, makes a strong case for the statement's accuracy. The confidence is high because the evidence, though concentrated in one source, is directly on point and from a recognized authority in the field.