Blockchain

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.

Blockchain

An elegy for cash: the technology we might never replace

Cash is gradually dying out. Will we ever have a digital alternative that offers the same mix of convenience and freedom?

Conceptual illustration of a coin funeral
Blockchain

China may be just about to launch its digital currency in two cities

Real-world tests of the system are set to begin soon, according to a local news report.

High-rise buildings in Shenzhen, China.
Blockchain

A blockchain expert is accused of helping North Korea’s leaders. But what would they want from him?

The North Korean regime appears to see cryptocurrency as a shortcut to economic development.

North Korean leader Kim Jong-un speaks into a microphone.
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