Digital currency

Digital money lives on computers.

It is not made of paper. It does not use coins. You cannot hold it in your hand.

This money moves through the internet. It can move very fast. It helps people buy things quickly.

Some money is run by a bank. Other money has no central leader. This is called a decentralized system.

One kind of this money is called bitcoin. It is very popular today. Digital money is changing how we pay for things.

Digital money is money kept on computer systems.

Most of it moves over the internet. You cannot hold it in your hand like a coin. It does not have a physical form like paper notes. Instead, it exists as data on servers. This helps money move very fast. It also makes sending money cheaper.

Some digital money is centralized. This means a bank or a company controls it. Other kinds are decentralized. In these systems, no single person or group is in charge. This is how bitcoin works. Bitcoin uses a system called blockchain. This is a digital record that many computers share. It uses math to keep the money safe.

There are many types of digital money. Virtual currency is often used in online games. Central bank digital currency is made by a country's government. It has the same value as paper money. Some people use digital wallets on their phones to pay for things. This lets them pay without using a real wallet. Digital money is changing how the world uses value.

Digital currency is money that lives on computer systems.

Most of it moves across the internet. You cannot hold it in your hand like a metal coin. It does not have a paper form like a banknote. Instead, it exists as digital data on computer servers. This way of moving money is very fast. It also makes sending money much cheaper than using physical cash. In the UK, only 3% of money is notes and coins. About 79% is electronic money held in bank deposits.

There are different ways these systems work. Some are centralized, which means one group is in charge. For example, a bank might control the money supply. Other systems are decentralized. In these, no single person or group has all the power. Control is decided by a group or a set of rules. Some digital money is called virtual currency. This is often used in specific places like online games. It is not considered legal tender by most governments.

People have been working on digital money for a long time. In 1983, David Chaum wrote about digital cash. He started a company called DigiCash in Amsterdam in 1989. Later, e-gold became the first widely used internet money in 1996. The US government shut e-gold down in 2008. In 1997, Coca-Cola let people use mobile payments at vending machines. PayPal also started its service in 1998. These steps helped lead to the digital world we see today.

In 2009, a new kind of money called bitcoin was launched.

Bitcoin is a cryptocurrency. It uses a system called blockchain to keep records. This means there is no central server or person in charge. Because of this, it is hard for governments to regulate. Other digital currencies have appeared too. In 2005, Tencent QQ launched Q coins in China. In 2006, a service called Liberty Reserve was founded. These many different names and dates show how fast the field grows.

Today, we use digital money in many parts of life. Many people use mobile wallets on their phones. Google Wallet was released in the United States in 2011. Apple Pay was announced in 2014 for iPhone users. Some countries even make central bank digital currencies. These are tokens that have the same value as a nation's paper money. They are different from bank accounts because the government issues them. This technology connects how we pay for things to the digital tools we use every day.

Digital currency refers to any money or money-like asset managed on digital computer systems. This includes assets exchanged over the internet. It can be stored in centralized electronic databases owned by banks. It can also exist on distributed databases or within digital files. Some digital currencies are kept on stored-value cards. Unlike traditional fiat currency, digital money lacks a classical physical form. You cannot hold printed banknotes or minted coins in your hand. Instead, it has an unclassical physical form. This form comes from the information and processing power of servers. It also involves computer-to-computer and computer-to-human interactions. This digital nature allows for nearly instantaneous transactions. It also greatly lowers the cost of distributing money. For example, in the UK, only 3% of the money supply consists of notes and coins. About 79% is electronic money held as bank deposits.

Digital currency systems are categorized by how they are controlled. Centralized systems have a single point of control over the money supply. A bank is a common example of a centralized authority. In contrast, decentralized systems have control that is predetermined or agreed upon democratically. This means no single entity manages the entire supply. Within these systems, there are several distinct sub-types. One major type is virtual currency. The European Central Bank defines virtual currency as unregulated digital money. These are usually controlled by their developers. They are often used within specific virtual communities. Another type is cryptocurrency. Cryptocurrencies are a sub-type of digital currency and digital assets. They rely on cryptography to manage asset transfers. They use peer-to-peer networking and decentralization to function.

Cryptocurrencies often use a specific mechanism called a blockchain. A blockchain is a digital ledger or record-keeping system. It uses cryptography to edit database entries called shards. These shards are distributed across many separate servers. Some systems use a proof-of-work or proof-of-stake scheme. These schemes help create and manage the currency. Because they use these distributed ledgers, they can be decentralized. This allows users to transfer value across borders easily. The speed of a transaction does not depend on the location of the payer or the payee. This is a major difference from many traditional systems.

The history of digital currency began with early electronic payment ideas. The Sabre travel reservation system was one such precursory idea. In 1983, David Chaum published a paper on untraceable payments. This paper introduced the concept of digital cash. Chaum founded DigiCash in Amsterdam in 1989 to commercialize these ideas. However, DigiCash filed for bankruptcy in 1998. In 1996, e-gold became the first widely used internet money. It grew to serve several million users. The US Government eventually shut it down in 2008. Other milestones include Coca-Cola offering mobile payments in 1997. PayPal also launched its USD-denominated service in 1998. These developments paved the way for modern digital finance.

A major turning point occurred in 2009 with the launch of bitcoin. Bitcoin marked the start of decentralized blockchain-based digital currencies. It has no central server and no tangible assets held in reserve. This makes it resistant to attempts by governments to regulate it. There is no central organization that can turn it off. Other notable examples include Tencent QQ's Q coins in 2005. These were commodity-based digital currencies used on a messaging platform. They were so effective in China that they caused speculation. This speculation had a destabilizing effect on the Chinese yuan. Another service, Liberty Reserve, was founded in 2006. It allowed users to exchange dollars or euros for its own units. This service was later prosecuted by the U.S. government.

Modern users often interact with digital currency through mobile digital wallets. These wallets facilitate easy contactless payment transfers. In 1994, the Mondex and National Westminster Bank provided an "electronic purse" in Swindon. In 2005, the Mobipay system launched in Spain using mobile phones. Venmo launched in 2010 as a mobile payment system using SMS. It became a popular social app for paying small expenses like coffee or rent. Google Wallet was released in the United States in 2011. Apple Pay was announced in 2014 for iPhone users. These tools allow people to carry credit and debit cards on their phones. They represent the practical, everyday application of digital money technology.

Governments are also creating their own digital currencies called CBDCs. A Central Bank Digital Currency is a universally accessible form of digital money. It holds the same value as a nation's paper currency. CBDCs are held in the form of tokens. They are different from regular online bank accounts. This is because they are established directly through a country's central bank. The liabilities are held by the government rather than a commercial bank. Approximately nine countries have already established a CBDC. These are used to exchange value and manage financial risks. However, CBDCs raise questions about whether currency should be easily trackable. If it is traceable, the government gains more control. There are also technical debates regarding anonymity and whether to use tokens or accounts.