Cryptocurrency refers to a type of digital or virtual currency that utilises cryptographic techniques to secure financial transactions, control the creation of new units, and verify the transfer of assets. Unlike traditional currencies issued and regulated by governments (FIAT currencies), cryptocurrencies operate on decentralised networks based on blockchain or similar distributed ledger technologies.
Key characteristics of cryptocurrencies include:
- Decentralisation: Cryptocurrencies operate on decentralised networks of computers (nodes) that collectively maintain and validate transaction records. This decentralisation eliminates the need for a central authority like a bank or government to oversee transactions.
- Cryptography: Cryptocurrencies use cryptographic techniques to secure transactions and control the creation of new units. Public and private keys ensure secure ownership and facilitate secure transactions within the network.
- Blockchain Technology: Most cryptocurrencies utilise a blockchain, which is a distributed ledger that records all transactions in a transparent and immutable manner. The blockchain stores transaction history across multiple computers in a chronological chain of blocks.
- Limited Supply: Many cryptocurrencies, like Bitcoin, have a capped supply, meaning there is a finite amount that will ever exist. This scarcity can contribute to their perceived value and potential as stores of value.
- Anonymity and Pseudonymity: Transactions made with cryptocurrencies can offer a level of privacy, as users’ identities are represented by cryptographic addresses rather than personal information. However, the degree of anonymity can vary among different cryptocurrencies.
Bitcoin, introduced in 2009, is the first and most well-known cryptocurrency, but thousands of other cryptocurrencies (commonly referred to as altcoins) have emerged since then. Examples of other prominent cryptocurrencies include Ethereum (ETH), Ripple (XRP), Litecoin (LTC), and many more, each with its own unique features, use cases, and underlying technologies.