In addition, the hashtag #SAFEMOONWALLET trended on Twitter for days leading up to the intended release. It also made an appearance on a billboard at London’s Piccadilly Circus.
Although analysis of a single factor and cryptocurrency combination, as above, is of interest, more general findings across multiple cryptocurrency/factor combinations can also be pursued. Fig 7 shows, for each cryptocurrency and factor combination, the mean coherence values during the bubble and non-bubble regimes. Each horizontal subplot shows a different coherence period band, from the lowest period band (2–4 days) at the top to the highest period band (256–512 days) at the bottom. As the duration of data for each cryptocurrency varies, certain ranges are left blank when that cryptocurrency does not have enough data to produce values for such bands.

But whether that growth is sustainable, and what it means long-term, is still in question. “This crypto, blockchain technology, the public interest in it right now is being driven by a kind of speculative fever,” says Dr. Richard Smith, executive director of the Foundation for the Study of Cycles, a nonprofit organization dedicated to studying recurring patterns throughout economies and cultures.
Bitcoin–and the cryptocurrency industry as a whole–plunged this year, after a gravity-defying surge in recent years. The price of the digital coin hit nearly $20,000 late last year. And then in early 2018, it began to fall. Though it hit a few plateaus, the price has still tumbled; today it hovers at a little over $3,000.