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A digital currency secured by cryptography and recorded on a blockchain, without a central bank issuing it.

Crypto prices are volatile, and governments are still deciding how to regulate it.

A material, usually silicon, used to make the chips that process and store information in electronic devices.

Chips power everything from phones to cars, so their supply has become a strategic issue for governments.

A shared digital ledger in which records are grouped into blocks and linked so that past entries are very hard to change.

It underpins cryptocurrencies and is tested for payments, supply tracking and record keeping.