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Correction: Bitcoin-Carbon Footprint story

June 14, 2019 by apnews.com

BERLIN (AP) — In a story June 13 about the carbon footprint of bitcoin, The Associated Press reported erroneously that the electricity required for a bitcoin transaction results in hundreds of times as much CO2 emitted as a credit card payment. It is hundreds of thousands of times as much.

A corrected version of the story is below:

Researchers: bitcoin’s carbon footprint equal to Las Vegas

Researchers calculate that the electricity required for the virtual currency bitcoin generates as much carbon dioxide as cities like Las Vegas or Hamburg

By FRANK JORDANS

Associated Press

BERLIN (AP) — The virtual currency bitcoin is responsible for the same amount of carbon dioxide emissions as a city like Las Vegas or Hamburg and efforts to reduce its climate footprint should be considered, researchers said Thursday.

A study by researchers at the Technical University of Munich and the Massachusetts Institute of Technology, examined how much power is consumed by computers used to generate bitcoins and process transactions.

Writing in the journal Joule, researchers said they then combined the results with the carbon emissions from electricity production in the countries where the computers were located.

They concluded that, in late 2018, the entire bitcoin network was responsible for 22-22.9 million tons of CO2 per year — similar to a large Western city or an entire developing country like Sri Lanka. Total global emissions of the greenhouse gas from the burning of fossil fuels were about 37 billion tons last year.

“There are bigger factors contributing to climate change,” said Christian Stoll, one of the study’s authors. “However, the carbon footprint is big enough to make it worth discussing the possibility of regulating cryptocurrency mining in regions where power generation is especially carbon-intensive.”

The researchers said about 68% of the computing power used to generate, or mine, bitcoins is in Asia, 17% is in Europe and 15% is in North America.

Alex de Vries, a bitcoin researcher who wasn’t involved in the study, questioned whether the method used to determine the location of computers was reliable enough.

But de Vries said the emission figures were consistent with those he had calculated using a different method, and could possibly even be on the low end.

“The folks in this study were very conservative on the energy side,” he told The Associated Press.

The environmental impact of bitcoin, which is the most important virtual currency, has long been a concern, especially given its limited uptake.

Last year the bitcoin network processed about 81 million transactions, compared to 500 billion transactions handled by the regular global banking system, said de Vries.

“If you look at the carbon footprint per transaction, that’s where the real shock is,” said de Vries, estimating it at about 271 kilograms of CO2 per transaction — or several hundred thousand times that of a standard credit card payment. “That’s insane.”

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Correction: Bitcoin-Carbon Footprint story have 561 words, post on apnews.com at June 14, 2019. This is cached page on ReZone. If you want remove this page, please contact us.

Filed Under: Climate Climate, AP Top News, Technology, General News, Bitcoin, Financial markets, International News, Berlin, Science, Hamburg, Business, Europe, Hambu

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