| http://www.w3.org/ns/prov#value | - The West Virginia Democrat sent a letter to federal regulators, including Yellen, on Wednesday calling for them to ban ??? or at least limit ??? the virtual currency in the U.S. Manchin alleges that Bitcoin is unregulated and unstable, and can be used for illegal activity such as money laundering.Due to Bitcoin's anonymity, the virtual market has been extremely susceptible to hackers and scam a
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