While none of the provided sources directly confirm the specific figure of a $51 million liquidation within a one-hour period, the available evidence strongly supports the high plausibility of such an event. The primary data sources from CoinGlass, which would be ideal for verification, are unfortunately linked to irrelevant pages for individual, small-cap cryptocurrencies and do not show market-wide data. However, two separate news articles provide powerful contextual support. They reference a past market event where a staggering $19 billion in leveraged positions were liquidated within hours, with the vast majority (83.9%) being long positions. Compared to a confirmed multi-billion dollar event, a $51 million liquidation is a relatively small and common occurrence in the highly volatile cryptocurrency derivatives market. The complete absence of any contradictory information further strengthens this conclusion. Therefore, based on the evidence confirming that liquidations of a much greater magnitude are a known feature of crypto markets, the statement is assessed as highly likely to be true.