What is a blockchain? Distributed ledger technology underlies cryptocurrencies like bitcoin and could be the future of money, security, and online privacy. But there's also a ton of hype.
Details of a recent attack on the popular crypto exchange reflect capabilities on par with those of nation-state-sponsored attackers.
Governments that want to circumvent US sanctions are turning to cryptocurrencies to avoid the traditional financial system.
If private digital currencies start competing with national currencies, it could cause some of them to be more volatile. Almost 200 years ago, we saw something similar.
This week, Facebook tussled with lawmakers in Washington about Libra, whose potential repercussions for the global financial system are still poorly understood.
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