Reuters|
Updated: Nov 30, 2017, 03.06 PM IST
Bitcoin slumped nearly 20% to $9000 hours after hittng its all time high of $11,000 stoking fears that bitcoin bubble might be ready to burst soon.
Here are some facts that you might not know about the largest and best-known cryptocurrency.
HOW MANY ARE THERE?
Bitcoin's supply is limited to 21 million - a number that is expected to be reached around the year 2140. So far, around 16.7 million bitcoins have been released into the system, with 12.5 new ones released roughly every 10 minutes via a process called "mining", in which a global network of computers competes to solve complex algorithms in reward for the new bitcoins.
ENERGY DRAIN
These mining computers require a vast amount of energy to run. A recent estimate by tech news site Motherboard put the energy cost of a single bitcoin transaction at 215 kilowatt-hours, assuming that there are around 300,000 bitcoin transactions per day. That's almost enough energy as the average American household consumes in a whole week.
BITS OF BITCOIN
Bitcoin's smallest unit is a Satoshi, named after the elusive creator of the cryptocurrency, Satoshi Nakamoto. One Satoshi is one hundred-millionth of a bitcoin, making it worth around $0.0001 at current exchange rates.
BITCOIN BILLIONAIRES
Bitcoin has performed better than every central-bank-issued currency in every year since 2011 except for 2014, when it performed worse than any traditional currency. So far in 2017, it is up around 1000 percent. If you had bought $1,000 of bitcoin at the start of 2013 and had never sold any of it, you would now be sitting on $80 million. Many people consider bitcoin to be more of a speculative instrument than a currency, because of its volatility, increasingly high transaction fees, and the fact that relatively few merchants accept it.
EXCHANGE HEISTS
More than 980,000 bitcoins have been stolen from exchanges, either by hackers or insiders. That's a total of more than $10 billion at current exchange rates. Few have been recovered.
MYSTERY CREATOR
Despite many attempts to find the creator of bitcoin, and a number of claims, we still do not know who Satoshi Nakamoto is, or was. Australian computer scientist and entrepreneur Craig Wright convinced some prominent members of the bitcoin community that he was Nakamoto in May 2016, but he then refused to provide the evidence that most of the community said was necessary. It is not clear whether Satoshi Nakamoto, assumed to be a pseudonym, was a name used by a group of developers or by one individual. Nor is it clear that Nakamoto is still alive - the late computer scientist Hal Finney's name is sometimes put forward. Developer Nick Szabo has denied claims that he is Nakamoto, as has tech entrepreneur Elon Musk more recently.
I NFLATED CHINESE TRADING
Until earlier this year, it was thought that Chinese exchanges accounted for around 90 percent of trading volume. But it has become clear that some exchanges inflated their volumes through so-called wash trades, repeatedly trading nominal amounts of bitcoin back and forth between accounts. Since the Chinese authorities imposed transaction fees, Chinese trading volumes have fallen sharply, and now represent less than 20 percent, according to data from website Bitcoinity.
"MARKET CAP"
The total value of all bitcoins released into the system so far has now reached as high as $190 billion. That makes its total value - sometimes dubbed its "market cap" - greater than that of Disney, and bigger than the market cap of BlackRock and Goldman Sachs combined.
CRYPTO-RIVALS
Bitcoin is far from the only cryptocurrency. There are now well over 1,000 rivals, according to trade website Coinmarketcap.
"SHORTING"
It is already possible to short bitcoin on a number of retail platforms and exchanges, via contracts for difference (CFDs), leveraged-up margin trading or by borrowing bitcoin from exchanges without leverage. But a number of big financial institutions - including CME Group, CBOE and Nasdaq - have recently announced that they will offer bitcoin futures, which will open up the possibility of shorting the cryptocurrency to the mainstream professional investment universe.
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