Although “smart contracts” represent an important move toward addressing the lack of chargebacks and refunds in cryptocurrencies, it remains to be seen whether they’re enough to solve the problem completely. Still, they’re at least partly responsible for Ethereum’s success.
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).

Responding to regulatory pressure, Binance has curbed some services on cryptocurrency bets, highly leveraged positions and trading with tokens linked to shares, and has pledged to beef up its compliance staffing.
The same goes for the Safemoon exchange compared to the competing exchanges. The number of products that the Safemoon ecosystem will host is less than that of competing parts. In the long run, less revenue will be generated on the Safemoon network, which means the rewards for token staking will be lower compared to platforms like Bitrise.