Getty Images Shirts for sale outside the entrance of the Bitcoin Center in New York during a class on the basics of bitcoin.The European Central Bank has a pretty clear message about the No. 1 virtual currency in the world: not our problem. In what appears to be a general service note on its website, the ECB outlines all the most nagging issues that bitcoin BTCUSD, +2.59% harbors, according to the central bank, notably focusing on its use as a highly speculative asset and its flaws as a legitimate currency. “Bitcoin is a speculative asset. In other words, it is something that you can gamble on to make a profit, but with a risk that you will lose your investment,” the central bank concludes. It also says regulating or restricting the nascent crypto market doesn’t fall under its remit.via