Bitcoin is a virtual currency that was created in 2009 by an unknown computer whizz using the alias Satoshi Nakamoto.
Individual Bitcoins are created by computer code.
The total value of all Bitcoin in existence is now more than £112billion.
Transactions are made without middle men, so there are no transaction fees and no need to give your real name.
More businesses are beginning to accept them and in some parts of the world you can even buy pizza with Bitcoins.
You can set up a virtual wallet websites like Blockchain to store, keep track and spend your digital money.
You are also able to purchase Bitcoin through an online exchange or Bitcoin ATM.
To find merchants that accepts Bitcoin in the UK click here.
Bitcoins aren’t printed, like pounds, dollars or euros – they’re produced by people, and increasingly businesses, running computers all around the world.
It’s the first example of a growing category of money known as cryptocurrency.
Bitcoin is attractive to some users because of its anonymity, as well as its lack of government control.
The website Silk Road was closed in 2013 following raids by the FBI and other agencies amid allegations of drug dealing with authorities seizing millions of dollars worth of Bitcoin during the raids.
HOW THEY CAN WORK.......!
The value of Bitcoin, like all currencies, is determined by how much people are willing to exchange it for.
To process Bitcoin transactions, a procedure called 'mining' must take place, which involves a computer solving a difficult mathematical problem with a 64-digit solution.
For each problem solved, one block of Bitcoin is processed.
In addition, the miner is rewarded with new Bitcoin.
To compensate for the growing power of computer chips, the difficulty of the puzzles is adjusted to ensure a steady stream of new Bitcoins are produced each day.
There are currently about 16 million in existence.
The Bitcoin protocol – the rules that make Bitcoin work – say that only 21 million Bitcoins can ever be created by miners.
However, these coins can be divided into smaller parts with the smallest divisible amount one hundred millionth of a Bitcoin.
This is called a "Satoshi", after the founder.
To receive a Bitcoin, a user must have a Bitcoin address - a string of 27-34 letters and numbers - which acts as a kind of virtual post box.
Since there is no register of these addresses, people can use them to protect their anonymity when making a transaction.
These addresses are in turn stored in Bitcoin wallets, which are used to manage savings.
Is Bitcoin the future of online trading?
No one knows what will become of Bitcoin as it is mostly unregulated, but that could change as governments are concerned about taxation and their lack of control over it.
So its' USP - the anonymity - could eventually prove its downfall.
While it keeps Bitcoin users’ transactions private, it also lets them buy or sell anything without easily tracing it back to them.
That’s why it has become the currency of choice for people online buying drugs or other illicit activities.
And not many governments will put up with that for long.
However, it is increasingly used in shops and restaurants - with a fraction of a bitcoin used to buy a pizza, for instance.
And people selling their houses have even said they are willing to accept the cryptocurrency.
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