A cryptocurrency (or simply crypto) is a type of digital money that does not exist within the central system of a bank or government. Instead, it operates on a network of computers.
Imagine there is a huge public ledger in which every money transfer is recorded. This ledger is not maintained by a single person or institution, but by thousands of computers simultaneously. If someone tried to cheat, the other computers would notice the discrepancy.
This public digital ledger is called a blockchain.
How Does It Work?
Let’s say Peter sends 1 unit of cryptocurrency to Anna.
- Peter initiates the transfer.
- The network’s computers verify that Peter actually owns the cryptocurrency he wants to send.
- The transaction is added to a new block.
- The block is added to the blockchain.
- Anna receives the cryptocurrency.
Because every transaction is recorded publicly, it is very difficult to falsify the records.
Why Is It Called “Crypto”?
The word “crypto” comes from cryptography, which refers to encryption technology. Cryptocurrencies use mathematical and cryptographic methods to secure transactions and ownership.
What Cryptocurrencies Exist?
Some well-known examples include:
- Bitcoin – the first major cryptocurrency, launched in 2009.
- Ethereum – not only a currency, but also a platform for running programs.
- Solana – offers fast and relatively inexpensive transactions.
There are thousands of different cryptocurrencies in existence.
What Are They Used For?
- Sending money over the internet.
- Investment purposes.
- Paying for online services.
- Powering digital applications and games.
- Preserving value in some countries where the local currency loses value rapidly.