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The Guardian - UK
The Guardian - UK
Technology
Dan Milmo Global technology editor

Ethereum cryptocurrency completes move to cut CO2 output by 99%

Ethereum Bitcoin Crypto Cryptocurrency De Vries Vitalik Buterin blockchain
Vitalik Buterin
Vitalik Buterin, the creator of ethereum, has steered the cryptocurrency’s method of validation from ‘proof of work’ to ‘proof of stake’. Photograph: Yonhap/EPA

Ethereum, the second largest cryptocurrency, has completed a plan to reduce its carbon emissions by more than 99%.

The software upgrade, known as “the merge”, will change how transactions are managed on the ethereum blockchain, a public and decentralised ledger that underpins the cryptocurrency and generates ether tokens, the world’s most popular cryptocurrency after bitcoin.

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