Regulation
Cryptocurrencies cannot be regulated by current US regulators
Payment for goods or services OTHER than transaction fees (for example, gas fees). This is tricky: unless it’s a stablecoin, it is similar to a currency, but not quite the same thing. (Remember that currencies are intended to be a store of value that remains within a narrow range relative to a key target or exchange rate. Assets, on the other hand, are designed to fluctuate in value—that’s how your little investment in something suddenly becomes worth so much, otherwise your huge investment in something else plummets to zero.) Currencies are regulated by the US Treasury Department, including FinCEN and the IRS.