Grok: “The Bitcoin reserve requirements for the Blackrock ETF filing are not explicitly stated in the provided sources. However, the filing does mention that the ETF will be backed by physical Bitcoin, meaning that Blackrock will need to hold a certain amount of Bitcoin to back the shares of the ETF. The exact amount of Bitcoin required to be held as reserves is not specified in the sources provided. It is likely that the reserve requirements will be determined by the number of shares issued and the price of Bitcoin at the time of the ETF's launch.”

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