DescriptionButterfly (abbreviated as BK), also called butterfly coin in Chinese, is a new generation of investment currency based on block chain technology, designed jointly by 17 famous economists from Singapore, the United States, Switzerland, South Korea, Japan and the United Kingdom. BK uses complex economic models to design and anchor the diversification of digital assets to realize the magnification of investment value. BK anchors more than 100 mainstream digital assets (including, but not limited to, BTC, ETH, XRP, BCH,EOS, LTC, XMR, DOGE, IOTA, DASH, NEO, etc.) at a fixed exchange rate. Users can convert BK currency into mainstream digital assets through bk.run anchor currency exchange transaction matching engine. Today, with the development of digital currency, technology is being updated constantly and investors'needs are constantly changing. From decentralized BTC to stable USDT, we can see investors'expectations and aspirations for the development of digital currency. The emergence of BK as investment currency will conform to market trends and respond to investors' deepest inner needs.