https://www.reuters.com/article/us-crypto-currencies-insight/how-american-investors-are-gobbling-up-booming-bitcoin-idUSKBN28D0Q5 >Bitcoin has grabbed headlines this week with its dizzying ascent to an all-time high. Yet, under the radar, a trend has been playing out that could change the face of the cryptocurrency market: a massive flow of coin to North America from East Asia.