Bloomberg Almost nine years since the birth of bitcoin, central banks around the world are increasingly recognising the potential upsides and downsides of digital currencies. The guardians of the global economy have two sets of issues to address. First is what to do, if anything, about the emergence and growth of the private cryptocurrencies that are grabbing more and more …

Every society runs on trust. This is even more true of complex, scientific modern societies than it is of tiny hunter-gatherer bands. Whenever you drive over a bridge, you trust that the engineers who designed based it on sound principles. When you take an antibiotic, you trust that the doctor who prescribed it did so for sound medical reasons. There …

While the sharp drop in bitcoin — 25 percent, or nearly $4,000, overnight (and 33 percent from the beginning of the week) — has some predicting the bubble is starting to burst, it may also provide evidence of the cryptocurrency’s longevity. The critical issue is transactions. And if you are looking for where the bottom could be to bitcoin’s plunge, …