The assessment is based on strong, indirect evidence from the most authoritative and relevant sources. The primary sources from CoinGlass and Gate.io, which are leading cryptocurrency derivatives data providers, explicitly describe the existence and purpose of 'Liquidation Heatmaps' for major assets like Ethereum. These tools are designed specifically to identify large pools of leveraged positions that will be liquidated at specific price levels. The very existence of these sophisticated tracking tools on high-authority platforms confirms that liquidation clusters of this magnitude (over $1.5 billion) are a known, monitored, and plausible phenomenon in the highly leveraged Ethereum derivatives market. While the provided links do not contain a live data point confirming a current $1.5 billion liquidation pool, they are primary documentation that validates the mechanism by which such a statement would be verified. The statement is a conditional one ('A specific price change...will cause...'), which aligns perfectly with the predictive function of a liquidation heatmap. There is no conflicting evidence, and the less relevant sources also support the general prevalence of these analytical tools in the market.