The assessment is based on multiple high-authority sources directly from the OKX exchange that confirm the statement. The most compelling piece of evidence is the OKX BTC/USDT spot trading page, which explicitly lists the 24-hour low price as $87,311.7, a figure well below the $89,000 mark. This is further substantiated by two other primary sources from OKX showing historical trading data, including average short positions at $87,716.9, which confirms that trading activity occurred below the $89,000 threshold on the platform. Corroborating evidence from external sources like TradingView and a crypto news website, while not specific to OKX, confirms the broader market trend of Bitcoin's price reaching or dipping below $89,000, aligning with the data from the exchange. There is no conflicting evidence among the provided sources. Several sources were correctly identified as irrelevant as they pertained to unrelated currency conversions or a different cryptocurrency, and thus did not factor into the assessment. The combination of direct, verifiable data from the primary subject (OKX) and consistent market context from other sources provides high confidence that the statement is true.