Buying a Bitcoin emits 195x as much CO₂ as buying an iPhone

https://xkcd.com/386/

My hypothesis was that CO₂ emissions of cryptoassets are much lower than a large US tech company like Apple when adjusted by market capitalisation¹.

Publicly traded corporations under-report their carbon emissions and crypto mining emissions are over-reported.

Emissions for proof of stake are substantially less than a proof of work model.

This compares apples and oranges! What about gold mining, paper currency and minting, and the entire banking system?

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