The Euro is the official currency of 18 Eurozone countries. The currency is managed by the European Central Bank (ECB) based in Frankfurt in collaboration with the Eurosystem. Despite being a modern currency, it is already the second largest reserve currency and second most traded in the world. The Euro coins come in denominations of 1c, 2c, 5c, 10c, 20c, 50c, €1 and €2. Euro banknotes are available as €5, €10, €20, €50, €100, €200 and €500. All Euro coins have a common side which shows the amount and a map of Europe. On the reverse, each country has their own variation which represents their culture. Despite these differences, all Euro coins are valid in all Eurozone countries. The Euro banknotes are the same on both sides in all Eurozone countries. They were designed by an Austrian, Robert Kalina, and each denomination has its own color and represents a historic period of European architecture with windows and gates on the front and bridges on the reverse.
Introduced in 2009, Bitcoin is an online, digital currency which doesn’t have a central bank or ownership and is often referred to as a peer-to-peer payment system. Bitcoins are generated through a process known as "mining." This involves using specific software to solve maths problems. When a maths problem is solved, the "miner" is rewarded with a Bitcoin. These Bitcoins can then be exchanged for goods and services. Although the number of companies who accept Bitcoins is currently limited, as the currency becomes more well known the number is growing. Bitcoins can also be bought using other currencies. Bitcoin is also a "crypto-currency" which means it uses cryptography to drive the production of Bitcoins and Bitcoin transactions. This makes the currency extremely secure. The "block chain," which is effectively a public book of accounts, is used to check that genuine Bitcoins are being exchanged in all transactions. Bitcoin benefits from no limits of exchange as users can perform instant transactions at an