# Cryptocurrency

Cryptocurrencies have revolutionized the financial world, offering a decentralized alternative to traditional fiat currencies. Built on cryptographic principles, they allow secure peer-to-peer transactions to occur on the internet without the need for intermediaries such as banks.

At their core, cryptocurrencies leverage blockchain technology. A blockchain is a decentralized ledger that records all transactions across a network of computers. This ensures transparency, security, and immutability. Every time a transaction occurs, it gets verified by network nodes through cryptography and then gets added to the blockchain.

Now, within the realm of cryptocurrencies, it's essential to differentiate between 'coins' and 'tokens'. While the two terms are often used interchangeably, they represent different concepts.

**Coins**: Cryptocurrency coins, or simply "coins", are digital assets that operate on their own blockchains. Examples include Bitcoin (BTC), which operates on the Bitcoin blockchain, and Ethereum (ETH), which operates on the Ethereum blockchain. These coins serve as both a medium of exchange and a store of value. They are akin to real-world money, albeit in digital form, and have their own independent ledgers.

**Tokens**: Tokens, on the other hand, are digital assets that do not have their own blockchain but exist on another blockchain. They are typically built on platforms like Ethereum, which allows for the creation of decentralized applications and the issuance of new tokens. Tokens can represent a wide range of assets and functionalities. For example, they can be used as a utility within a specific application or as a representation of an underlying asset (like real estate or commodities). The creation and distribution of tokens often occur through a process known as an Initial Coin Offering (ICO) or a Token Generation Event (TGE).

In conclusion, while both coins and tokens fall under the broad category of cryptocurrencies, they differ in their underlying structures and purposes. Coins typically act as digital money with their own blockchains, while tokens operate on existing blockchains and can represent a multitude of assets or utilities.
