比特币续跌至逾两个月低点,因马斯克变卦且报导称美国调查Binance

Posted 路透财经早报

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比特币对地球污染有多严重? From 路透财经早报 02:15

比特币周四连续第二天下跌,触及逾两个月低点,之前特斯拉执行长马斯克转变对接受比特币的立场,且美国调查全球最大的加密货币交易所之一Binance。


周三比特币跌17%,因马斯克称暂停接受用比特币购车。


彭博周四报导,美国司法部和美国国税局已向了解该业务的个人征询信息,这是对Binance调查的一部分。


加密货币交易所Bitfinex的首席技术官Paolo Ardoino说:“比特币的评论者将再次扑向试图将自己与该领域联系起来的许多个性丰富多彩的名人。”


“但是,重要的是要记住,比特币要比当今的名人,或者实际上是该领域中的重要人物大得多。”


比特币跌至45,700美元,为3月1日以来最低,最新下跌1.6%至48,595美元。


第二大加密货币以太币跌至盘中低点3,543.62美元,最新交投于3,633美元,跌幅为4.6%。周三,以太币再创历史新高4,380.64美元。


在周四的第二条推文中,马斯克谴责生产比特币消耗“疯狂”数量的能源。这使比特币走低。


音频原文:

How bad is bitcoin for the planet?

The bitcoin gold rush comes with dirty baggage.
Mining the virtual currency and its transactions are estimated to cause more pollution than a small country every year – a fact that companies and proponents are beginning to wake up to.
Elon Musk recently tweeted that Tesla will no longer accept it as payment and he believes the cryptocurrency “has a promising future, but this cannot come at great cost to the environment."
What’s the problem, you may ask?
Bitcoin’s virtual, so it’s not like it’s made from paper or plastic, or even metal.
Bitcoin is created when high-powered computers compete against other machines to solve complex mathematical puzzles.
It’s an energy-intensive process that often relies on electricity generated with fossil fuels.
Greater demand and higher prices have led to more miners competing to win coin, using increasingly powerful computers that need more energy.
At current rates, such bitcoin “mining” devours about the same amount of energy annually as the Netherlands did in 2019, according to the University of Cambridge and the International Energy Agency.
A study in scientific journal Joule estimates that production generates emissions between the levels produced by Jordan and Sri Lanka.
University of Cambridge data shows Chinese miners account for about 70% of production.
They do tend to use renewable energy - mostly hydropower - during the rainy summer months but fossil fuels - primarily coal - for the rest of the year.
Projects from Canada to Siberia are striving for ways to make bitcoin greener and more palatable to mainstream investors.
Blockchain analysis firms say, in theory, it is possible to track the source of bitcoin, raising the possibility that a premium could be charged for green versions.
Some proponents also note that the existing financial system - with its millions of employees and computers in air-conditioned offices - uses large amounts of energy too.
But the dominance of Chinese bitcoin miners - and lack of motivation to move to more expensive renewables - could mean there are few quick fixes to the cryptocurrency's emissions problem.

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