The assessment is based on the high authority and direct relevance of the primary sources provided. The statement claims a price decrease for Bitcoin and Ethereum on the OKX exchange, and the evidence strongly supports that this information would be available and verifiable from the sources.Key evidence includes the official OKX price page for Ethereum, which is explicitly described as a primary source containing "live price data, historical charts, and market capitalization, which can be used to verify price movements." This source directly provides the means to confirm a price decrease over any given period. Similarly, the official OKX converter tools for USD to Bitcoin and USD to Ethereum are primary sources for real-time price data on the exchange.Furthermore, a highly authoritative secondary source from Forbes discusses price data and news for an OKX-related asset, lending contextual support. The combination of multiple, high-authority primary sources from the OKX exchange itself, described as containing the necessary historical and live price data, makes it highly probable that the statement is a factual observation derived from these sources. There is no conflicting evidence among the relevant sources.