特斯拉暫停比特幣支付購車，馬斯克：尋找能源耗損率不到1%的密碼貨幣｜數位時代 BusinessNext
比特幣下殺15% 創7周最大跌幅 ｜ 蘋果新聞網 ｜ 蘋果日報
據《彭博》報價，全球最大加密貨幣比特幣（Bitcoin）日前再創歷史新高後，今盤中價位大幅回落，一度大跌15.05%下探51707.51美元（約146.54萬元台幣），寫下逾7周來單日最大跌幅，全球第2大加密貨幣以太幣（Ether）盤中也同步大跌近18%。
一些網路報導將比特幣價位重挫，歸因於市場預期美國財政部將出手防範透過數位資產來洗錢。
在加密貨幣交易所coinbase上周三在納斯達克上市的熱潮帶動下，比特幣當天漲抵空前新高64869.78美元，等於1枚就價值183.85萬元台幣。過去1年來比特幣價位已暴漲超過800%，市值也突破了1兆美元（約28.34兆元台幣），成為炙手可熱的投資標的之一。
但隨著這類加密資產的投資人基礎日益擴大，各國政府紛紛開始密切評估相關風險。美國聯準會（Fed）主席鮑威爾（Jerome Powell）上周才表示，比特幣「有點類似黃金」，但更像是投機工具而非用於支付的貨幣。歐洲央行（ECB）總裁拉加德（Christine Lagarde）1月時也曾批評比特幣被用於洗錢等犯罪用途，稱加密貨幣助長了這類「可笑的活動。」
土耳其央行已宣布，從4月30日起禁止使用加密貨幣進行支付，聲稱這類數位資產欠缺監管機制且波動過大，有造成「不可恢復的」損失的風險。另外《路透》上月曾披露，印度政府打算立法禁止加密貨幣，並向私下持有與交易的人開罰。
不過，今年來比特幣價位累計仍漲逾90%。（劉利貞／綜合外電報導）
Bitcoin Tumbles After Musk Implies Tesla May Sell Cryptocurrency
(Bloomberg) – Elon Musk continued to whipsaw the price of Bitcoin, briefly sending it to the lowest since February after implying in a Twitter exchange Sunday that Tesla Inc. may sell or has sold its cryptocurrency holdings.
Bitcoin slid below $45,000 for the first time in almost three months after the billionaire owner of the electric-car maker seemed to agree with a Twitter post that said Tesla should divest what at one point was a $1.5 billion stake in the largest cryptocurrency. It traded at $45,270 as of 5:51 p.m. in New York, down about $4,000 from where it ended Friday.
The online commentary was the latest from the mercurial billionaire in a week of public statements that have roiled digital tokens. He lopped nearly $10,000 off the price of Bitcoin in hours last Wednesday after saying Tesla wouldn’t take it for cars. A few days earlier, he hosted “Saturday Night Live” and joked that Dogecoin, a token he had previously promoted, was a “hustle,” denting its price. Days later he tweeted he was working with Doge developers to improve its transaction efficiency.
Musk’s disclosure in early February that Tesla used $1.5 billion of its nearly $20 billion in corporate cash to buy Bitcoin sent the token’s price to record and lent legitimacy to electronic currencies, which have become more of a mainstream asset in recent years despite some skepticism.
His latest dustup with Bitcoin started with a tweet from a person using the handle @CryptoWhale, which said, “Bitcoiners are going to slap themselves next quarter when they find out Tesla dumped the rest of their #Bitcoin holdings. With the amount of hate @elonmusk is getting, I wouldn’t blame him…”
The Tesla chief executive officer responded, “Indeed.”
The twitter account @CryptoWhale, which calls itself a “crypto analyst” in its bio, also publishes a Medium blog on market and crypto trends.
Musk has spent hours Sunday hitting back at several different users on Twitter who criticized his change of stance on Bitcoin last week, a move he said was sparked by environmental concerns over the power demands to process Bitcoin transactions. He said at the time that the company wouldn’t be selling any Bitcoin it holds.
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An outspoken supporter of cryptocurrencies with cult-like following on social media, Musk holds immense sway with his market-moving tweets. He has been touting Dogecoin and significantly elevated the profile of the coin, which started as a joke and now ranks the 5th largest by market value.
Dogecoin is down 9.6% in the last 24 hours, trading at 47 cents late Sunday afternoon, according to data from CoinMarketCap.com.
Tesla didn’t immediately respond to an email seeking comment on Musk’s tweet on Sunday.
Read More: Elon Musk Just Reopened an Old Wound in the Bitcoin World
Musk’s Sunday social-media escapades were the latest chapter in one of the zaniest weeks in a crypto world famous for its wildness. For die hards, the renewed slumps in Bitcoin and other tokens have done nothing to deter crypto enthusiasts who say digital coins could many times their current value if they transform the financial system.
“We’re looking at the long-term and so these blips, they don’t faze us,” Emilie Choi, president and chief operating officer of crypto exchange Coinbase Global Inc., said last week on Bloomberg TV about the wild swings prevalent in the market. “You’re looking for the long-term opportunity and you kind of buckle up and go for it.”
Seat belts were needed by anyone watching the crypto world in the past eight days. Aside from Musk’s antics that sent Doge and Bitcoin on wild rides, a host of other developments pushed around prices.
Tether, the world’s largest stablecoin, disclosed a reserves breakdown that showed a large portion in unspecified commercial paper. Steve Cohen’s Point72 Asset Management announced that it would begin trading cryptocurrencies. And a longstanding critique of the space reared its head again: illicit usage.
It was reported that the owners of the Colonial Pipeline paid a $5 million ransom in untraceable digital currencies to hackers that attacked its infrastructure, while Bloomberg also reported that Binance Holdings Ltd., the world’s biggest cryptocurrency exchange, was under investigation by the Justice Department and Internal Revenue Service in relation to possible money-laundering and tax offenses.
But, “for many crypto assets such as Bitcoin and Ethereum, the long-term story has not changed,” said Simon Peters, an analyst at multi-asset investment platform eToro. “This emerging asset class continues to revolutionize many aspects of financial services, and while nothing goes up in a straight line, the long-term fundamentals for crypto assets remain as solid as ever.”
Bitcoin was already swinging wildly on the weekend before Musk tweeted. The two days tend to be particularly volatile for cryptocurrencies, which – unlike most traditional assets – trade around the clock every day of the week. Bitcoin’s average swing on Saturdays and Sundays so far this year comes in at 4.95%.
That type of volatility is owing to a few factors: Bitcoin’s held by relatively few people, meaning that price swings can be magnified during low-volume periods. And, the market remains hugely fragmented with dozens of platforms operating under different standards. That means cryptocurrencies lack a centralized market structure akin to that of traditional assets.
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