14 Things You Need to Know About BitcoinThe cryptocurrency has had a tumultuous existence so far.

Even the most tech savvy among us have ahard time包装头比特币左右。它是一个热pic and a frequent point of discussion among investors, entrepreneurs and stock traders, so you should want to know all about it.

For starters, here's an overly simplified explanation of Bitcoin: It's a digital currency (there aremore than 800 now) that isn't controlled by a central authority such as a government or bank. It's created by "miners," who use computers and specialized hardware to process transactions, secure the currency's network and collect bitcoins in exchange. Supporters say it allows for more secure transactions over the internet. That's in part due to blockchain, a technology that records cryptocurrency transactions chronologically in a public digital ledger.

Bitcoin is only eight and a half years old, but it's the oldest and most highly valued cryptocurrency out there. In such a short time, it's had a rocky and controversial history, but it's also attracted a fair share of high-profile supporters. Click through to read 11 bits about Bitcoin that will make you at least sound like you know what you're talking about next time it inevitably comes up.

The birth of Bitcoin

The比特币的起源trace back to2008, when its creator, who went by the pseudonym Satoshi Nakamoto, published aproof of conceptfor Bitcoin. The proof was then published to a cryptocurrency mailing list in 2009. Nakamoto left the project in 2010 and disappeared, but other developers picked up the work. Bitcoin's birthday is Jan. 3, when Nakamotomined the first 50 unitsof the currency.

An elusive creator

The true identity of Bitcoin's creator has never been confirmed.Newsweekclaimedto have found Bitcoin's creator in 2014, identifying Temple City, Calif., resident Dorian Satoshi Nakamoto. He has vigorously denied it. In 2015, an Australian entrepreneur namedCraig Wrightsaid he was Bitcoin's creator, but he couldn't produce the evidence to support his claim. Whoever Nakamoto is, that person is very rich, as the creator is estimated to havemined a million bitcoinsin the currency's early days.

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Very expensive pizza

The first transaction involving bitcoin was reported on May 22, 2010, when a programmer identified as Laszlo Hanyecz said he "successfully traded 10,000 bitcoins for pizza." As of Nov. 28, 2017, 10,000 bitcoins are worth about $99 million.

You can spend bitcoins

While it may not seem like it, people continue to use bitcoins to buy stuff. The largest businesses to accept the cryptocurrency includeOverstock.com,Expedia,NeweggandDish.

Federal Bureau of Bitcoin

At one point, the U.S. government was one of thelargest holders of bitcoin. In 2013, after the FBI shut down Silk Road, a darknet site where people could buy drugs and other illicit goods and services, it took over bitcoin wallets controlled by the site, one of which held 144,000 bitcoins. Investors have beenmaking a killingby bidding on government-seized bitcoins.

A mountain-sized setback

In early 2014, Bitcoin suffered a devastating loss after thealleged hacking of Mt. Gox, a Japanese exchange. About $460 million of the currency (in 2014 value) was stolen. It was the largest loss of bitcoins ever and raised concerns about how secure the currency was.

The billionaires' takes

Warren Buffett, perhaps the most famous investor in the world, was not so keen on Bitcoin one of the only times he addressed the currency. "Stay away from it. It's a mirage, basically,"he told CNBC. "The idea that it has some huge intrinsic value is a joke in my view."

Fellow billionaire investor Jamie Dimon, chief executive of JPMorgan Chase, had evenstronger wordsabout Bitcoin: "You can't have a business where people are going to invent a currency out of thin air. It won't end well … someone is going to get killed and then the government is going to come down on it."

But not allbillionairesare against Bitcoin. Mark Cuban has said its value is inflated, but he recentlyinvested in a venture capital fund that backs cryptocurrency. Richard Branson, however, has spoken moreoptimisticallyabout it.

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Super wealthy twins and a smart teen

Othernotable investors in Bitcoininclude Cameron and Tyler Winklevoss (the Harvard-educated twins who sued Mark Zuckerberg claiming that Facebook was based on an idea they'd had). They bought $11 million worth of Bitcoin in 2013, an amount said to be about 1 percent of all bitcoins in circulation at that time. When Bitcoin's value reached more than $11,000 in early December, the twins were declared the firstBitcoin billionaires. The Winklevoss twins have been petitioning the SEC to create abitcoin exchange traded fund. The agency rejected the idea earlier this year.

Another is investor and entrepreneurErik Finman, who invested $1,000 into Bitcoin when he was 14 years old and is now a millionaire.

Celebrities want in

Celebrities have also expressed enthusiasmfor the cryptocurrency. Actor and Goop founder Gwyneth Paltrow advises Abra, a Bitcoin wallet, and Ashton Kutcher, Nas and Floyd Mayweather have all invested in Bitcoin startups.

Support from a big financial institution

In August 2017, Fidelity Investments became a rare standout among financial institutions in embracing Bitcoin and other cryptocurrencies. The company allows its clients to use the Fidelity website toview their bitcoin holdingsheld through digital wallet provider Coinbase. "This is an experiment in the spirit of learning what these crypto assets are like and how our customers may want to interact with them," Hadley Stern, senior vice president and managing director at Fidelity Labs, toldReuters.

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A hard fork

On Aug. 1, 2017, Bitcoin experienced what's being called a "hard fork" as a result of a few issues, including the limited number of transactions that can be processed per second. Essentially, the cryptocurrency split into two, withBitcoin Cashdebuting. Here's howRob Marvin ofPCMagexplainsthe situation: "The Bitcoin fork speaks to a fundamental ideological rift over what's more important: preserving the decentralized nature and independent control of the Bitcoin network, or accelerating transaction speeds to make the cryptocurrency more viable for mainstream ecommerce and payments." Bitcoin Cashallows larger blocks of currencyand more transactions per second.

Jaw-dropping

At the end of November 2017, Bitcoin's value reached toward $10,000 per unit. There are some 16.7 million Bitcoin units in circulation, and the cryptocurrency'smarket capitalization($167,156,585,840 as of Nov. 28, 2017) is actually higher than that of Disney, McDonald's or IBM, and it is slightly above that of GE.

Publicly traded

As of early December, there is another way to invest in Bitcoin without possessing some of the digital currency. On Dec. 10, 2017,Bitcoin futures-- "financial contracts obligating the buyer to purchase an asset or the seller to sell an asset," according toInvestopedia-- became available on Cboe, a Chicago exchange. What this means for the future of Bitcoin is uncertain, but some argue it will help stabilize the cryptocurrency's wild price fluctuations.

The hidden cost of Bitcoin.

这个过程创造比特币,称为开采,是一个n energy intensive process, with many of the miners usingspecialized equipmentfor the process. This computing power has added a burden to energy systems around the globe, and in some countries, such as China, those systems still are powered by coal.

PowerCompare, a U.K.-based energy comparison tariff service,estimatesthat Bitcoin mining consumes more electricity than 159 countries, including Ireland and most countries in Africa.

Power consumption for all cryptocurrencies is on track to use more electricity in 2018 than the whole of Argentina, according toBloomberg.