Federal Reserve governor says blockchain is revolutionary, but still has to prove itself

(Reuters) — The technology behind the controversial bitcoin electronic currency could lead to sweeping improvements in how financial transactions are carried out worldwide, Federal Reserve Governor Lael Brainard said on Friday.
But only if it can be safeguarded from hackers and terrorists, and not grind to a halt in a crisis.
Those assurances may still be years away, Brainard said, though the Fed is closely tracking the evolution of so-called blockchain systems, and sees it as “the m