"Some of the NFT collections had bounced by 50-60% in the past few days, which indicates a possible reversal in the coming weeks," he added.
The SADF test finds the largest ADF statistic from all the windows considered. If this value exceeds a critical value, the null hypothesis can be rejected, and it is deemed the series displays explosive behaviour in at least one of the windows (taken as indication of a bubble occurring).

It should be noted that crypto prices also started rising more quickly when Donald Trump lost the presidential election, so we should probably have a think about the notion that Trump might actually be Satoshi, and that now with more free time on his hands he is focusing on pumping the market. After all it is highly likely that he is a Japanese-trained quantum physicist (do make sure you get to 2:09 in this for proof of his knowledge of thermodynamics, and to 2:45 for evidence of his reading Japanese):
No matter if crypto is going up or down, the best thing you can do is to not look at it. Set it and forget it like you would any traditional long-term investment account. “If you let your emotions get too much into it then you could sell at the wrong time, or you might make the wrong decision,” says Yang. “You stress out about it, and I don’t think that’s a healthy way to approach it.”