The digital currencies that matter

TECHNOLOGICAL CHANGE is upending finance. Bitcoin has gone from being an obsession of anarchists to a $1trn asset class that many fund managers insist belongs in any balanced portfolio. Swarms of digital day-traders have become a force on Wall Street. PayPal has 392m users, a sign that America is catching up with China’s digital-payments giants. Yet, as our special report explains, the least noticed disruption on the frontier between technology and finance may end up as the most revolutionary: the creation of government digital currencies, which typically aim to let people deposit funds directly with a central bank, bypassing conventional lenders.