EVERYTHING ABOUT BITCOIN.
Bitcoin often described as a cryptocurrency, a virtual currency or a digital currency is a type of money that is completely virtual.
It's like an online version of cash. You can use it to buy products and services, but not many shops accept Bitcoin yet and some countries have banned it altogether.
However, some companies are beginning to buy into its growing influence.
In October last year, for example, the online payment service, PayPal, announced that it would be allowing its customers to buy and sell Bitcoin.
The physical Bitcoins you see in photos are a novelty. They would be worthless without the private codes printed inside them.
How does Bitcoin work?
Each Bitcoin is basically a computer file that is stored in a 'digital wallet' app on a smartphone or computer.
People can send Bitcoins (or part of one) to your digital wallet, and you can send Bitcoins to other people.
Every single transaction is recorded in a public list called the blockchain.
This makes it possible to trace the history of Bitcoins to stop people from spending coins they do not own, making copies, or undoing transactions.
How do people get Bitcoins?
There are three main ways people get Bitcoins.
1. You can buy Bitcoins using 'real' money.
2. You can sell things and let people pay you with Bitcoins.
Or they can be created using a computer.
How are new Bitcoins created?
In order for the Bitcoin system to work, people can make their computers process transactions for everybody.
The computers are made to work out incredibly difficult sums. Occasionally they are rewarded with a Bitcoin for the owner to keep.
People set up powerful computers just to try and get Bitcoins. This is called mining.
But the sums are becoming more and more difficult to stop too many Bitcoins from being generated.
If you started mining now it could be years before you got a single Bitcoin.
You could end up spending more money on electricity for your computer than Bitcoin would be worth.
Why are Bitcoins valuable?
There are lots of things other than money which we consider valuable like gold and diamonds. The Aztecs used cocoa beans as money!
Bitcoins are valuable because people are willing to exchange them for real goods and services, and even cash.
Why do people want Bitcoins?
Some people like the fact that Bitcoin is not controlled by the government or banks.
People can also spend their Bitcoins fairly anonymously. Although all transactions are recorded, nobody would know which 'account number' was yours unless you told them.
In an online chat with social media users in January 2021, the world's richest man, Elon Musk, said he was a big supporter of Bitcoin.
He even went as far as to change his Twitter bio to "#bitcoin".
He has repeatedly shown his support to online currencies in recent years and caused major movements in their values due to his own personal wealth and influence.
This particular endorsement led to the value of Bitcoin rising significantly.
Is it secure?
Every transaction is recorded publicly so it's very difficult to copy Bitcoins, make fake ones or spend ones you don't own.
It is possible to lose your Bitcoin wallet or delete your Bitcoins and lose them forever. There have also been thefts from websites that let you store your Bitcoins remotely.
The value of Bitcoins has gone up and down over the years since it was created in 2009 and some people don't think it's safe to turn your 'real' money into Bitcoins.
This concern was expressed by the head of The Bank of England, Andrew Bailey, in October 2020.
He said that he was "very nervous" about people using Bitcoin for payments pointing out that investors should realise its price is extremely volatile.
By this, he meant that the value could drop significantly at any moment and investors could lose a lot of money.
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