The cryptocurrency challenge

Cryptocurrencies are flourishing despite an image tarnished by ransomware and the dark web. Will they revolutionise business and banking, or are they just over-hyped tools for scams and money laundering? Here’s the best of our comment and analysis

Flood of initial coin offerings is aimed at bypassing Google and Amazon, but sceptics fear a bubble

Regulators are getting to grips with digital currency, and not too soon

How technology disrupts the payments system gives policymakers pause for thought

Investors can profit from cryptocurrencies without taking huge risks

Paris Hilton joins celebrities endorsing digital coins, just as Whoopi Goldberg did with an earlier craze

Estonian proposals may not be as ingenious or innovative as they seem

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