The new system will use 99.95% less energy, according to the Ethereum Foundation. The upgrade, which changes how transactions occur and how...

Under the change, Ethereum will move from a "proof of work" system, in which energy-hungry computers validate transactions by solving compl...

Bitcoin's dominance, or its share of the crypto market's market value, has slipped to 39.1% from this year's peak of 47.5% in mid-June, acc...

Tesla CEO Elon Musk on Friday said the electric carmaker will accept meme-based digital currency dogecoin for merchandise.

In September 2018, the U.S. Securities and Exchange Commission filed a lawsuit against Musk for fraud and sought to remove him from Tesla.

The digital asset gained as much as 4.8% to $4,459.20, topping the previous record of $4,379.62 in May. The token traded around $4,387 as o...

Bitcoin has gyrated to Musk's views for months since Tesla announced a $1.5 billion bitcoin purchase in February and said it would take the...

Elon Musk stated that Tesla will accept payments in the form of cryptocurrency 'when there's confirmation of reasonable (~50%) clean energy...

Bitcoin, the world's biggest and best-known cryptocurrency, is up 40.7% from the year's low of $27,734 on Jan. 4

Elon Musk also said that Tesla sold about 10% of holdings to confirm bitcoin could be liquidated easily without moving market.

The largest digital currency slipped as much as 6.5% to $36,494 in New York, following a 16% jump on Monday. The wider Bloomberg Galaxy Cry...

Musk and Michael Saylor, another long-time Bitcoin booster, tweeted that they held a call with major North American miners, including Micha...

Bitcoin rose after Musk’s post to trade at around $38,150 as of 12:27 p.m. London time.

Since hitting a record just under $65,000 in mid-April, bitcoin's price has fallen 35%. Bitcoin was down 5.2% at $44,073, driven by tweets ...

"If Bitcoin was a country, it would use around the same amount of electricity a year to mine as Switzerland does in total," Deutsche Bank a...

Tesla can itself take an active role in helping make bitcoin greener by investing in new projects aimed at boosting the use of renewable en...

Elon Musk tweets a graph of bitcoin's power consumption, saying "Energy usage trend over past few months is insane." This, after he earlier...