EL ZONTE, El Salvador (AP) — After El Salvador’s congress made the bitcoin legal tender this week, eyes turned to this rural fishing village on the Pacific coast. Known to surfers for its pounding waves, El Zonte has had the cryptocurrency in its economy for the past year.
In order to provide a methodology to detect bubbles in time series, Phillips, Wu, and Yu [23] proposed the supremum augmented Dickey-Fuller (SADF) test. This applies a series of right-tailed unit root tests to expanding windows of a time series (with a fixed start date), defined by where r2 is the final data point to be considered in each window, starting at r0 which is a fraction representing the smallest allowed window size and expanding to 1(the complete data set).

Brian Brooks, incoming CEO of crypto exchange Binance.US, tells CNN's Julia Chatterley that "at a certain point, finance will have migrated out of the analog age and into the digital age." He weighs in on Dogecoin, Coinbase, and regulation.
Some cryptocurrencies, like Bitcoin, have a finite number of coins that help to generate demand and reinforce their perceived worth. For example, the maximum supply of Bitcoin is capped at 21 million, as determined by the Bitcoin's creator(s).