Similarly, no one has Bitcoin-denominated salaries, borrows money in Bitcoins, or pays Bitcoin-denominated rent every month.
Plenty of legal businesses accept Bitcoins, after all, in exchange for all sorts of merchandise.
All bitcoins now in circulation were originally created by this process, which is known as mining.
At least one trader was hit in the attack and lost 34 bitcoins as a result.
To safely hold Bitcoins, you need a reliable backup system and a good encryption scheme.
Block explorer tells me that someone sent 36953.2525 Bitcoins to the address 148X4kTYZhjeKQcd1AVhcytXvh5gL6FNSe.
Unlike other currencies, Bitcoins are not issued by a central bank or other centralised authority.
As a digital currency, bitcoins are not issued by a central bank or national mint.
In the early days of bitcoins, many people used desktop computers to do the hard sums.
Bitcoins are spent by assigning the private key associated with them to someone else.
But although the raid caused a dip in the price of Bitcoins, it soon recovered.
The move could convince many organisations and businesses to start accepting bitcoins as payment, he said.
However, he said, this protection only applied to balances held in euros rather than bitcoins.
The exchange is one of many that swaps bitcoins, computer generated cash, for real world currencies.
Still, with more than seven million bitcoins in circulation, Nakamoto had created thirty-five million dollars of value.
Technical glitches, hacker attacks, speculation and fraud have caused wild swings in the dollar price of Bitcoins.
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Mr. Andresen's job is to help refine the software that allows Bitcoins to be traded and stored.
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The more people will use it the less impact any isolated incident will have on bitcoins value.
But Bitcoins dropped sharply in value as the MTGox exchange came under a sustained attack by hackers.
In addition, the Instawallet website - where people store Bitcoins - is offline indefinitely after an attack.
However, in court filings, four users said that only half of their Bitcoins have been returned.
The service's owners said this conversion charge might change as exchange rates for bitcoins had fluctuated widely.
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Instead bitcoins are "mined" by people getting their computer to perform a complicated and time-consuming mathematical problem.
Greek economist Yanis Varoufakis says in the US even pizza parlours and High Street shops accept bitcoins.
Before now, he told the BBC, it had been hard for novices to get started with bitcoins.
Bitcoins tend not to be very secure, says Richard Booth, a consultant at RSA, a cyber-security firm.
Online retailers like Amazon (NASDAQ: AMZN) have yet to begin accepting bitcoins, and maybe they never will.
That uncertainty would exist regardless of whether the supply of Bitcoins was projected to rise quickly or slowly.
It went offline again to avoid the attack and when it re-started, bitcoins continued to fall in value.
No one really knows who is really behind Bitcoins, as the creator is just a pseudonym Satoshi Nakamoto.
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