Cryptocurrency

Cryptocurrency is a digital form of money secured by cryptography and recorded on a blockchain, enabling peer-to-peer transactions without central authorities.

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Understanding cryptocurrency: a beginner’s guide

A cryptocurrency is a digital form of money that works on decentralized networks. Unlike traditional cash, it isn’t issued by banks or governments. Instead, it runs on What is a Blockchain?What is a Blockchain?Think of blockchain as a public notebook that everyone owns a copy of. Whatever gets written in it is permanent and visible to all.Keep learning technology, which keeps transactions transparent and secure.

A Simple Analogy

Think of crypto like email for money. Just as email lets you send messages instantly without a post office, cryptocurrency lets you send value instantly without a bank.

Key Features

    1. Decentralized - No central authority controls it.
    2. Borderless - Can be sent anywhere in the world within minutes.
    3. Limited Supply - Many coins, like Bitcoin, have a maximum number that can ever exist.
    4. Secure - Transactions are verified by a network of computers.

Examples of Popular Cryptocurrencies

    • Bitcoin (BTC): The first and most widely known digital currency, designed to act as “digital gold.”

    • Ether (ETH): Not just money, it powers smart contracts and decentralized apps.

    • Stablecoins (USDT, USDC, DAI): Coins pegged to real-world currencies like the US dollar, reducing volatility.

How People Use It

    • Payments: Buying goods or services directly with crypto.

    • Investing: Holding coins in hopes they increase in value.

    • Decentralized Finance (What is DeFi?What is DeFi?DeFi stands for Decentralized Finance. It refers to a collection of applications and platforms built on blockchain that allow people to transact without banks.Keep learning): Earning interest, borrowing, or lending without a bank.

    • NFTs & Gaming: Purchasing unique digital assets or in-game items.

Recap

A cryptocurrency is a digital form of money, operating on a blockchain. As its name indicate, it is encrypted via coding, ensuring a very high level of security.

There are thousands of cryptos, all serving different use cases. The first ever created cryptocurrency (and still most famous) is bitcoin.

Tag System

The tags found in our glossary are there to help you better understand presented definitions. They showcase how certain concepts integrate and interact within the ecosystem.

Rectangular tags signal a concept related to What is a Blockchain?What is a Blockchain?Think of blockchain as a public notebook that everyone owns a copy of. Whatever gets written in it is permanent and visible to all.Keep learning as a technology. Whereas rounded tags represent What is Cryptocurrency?What is Cryptocurrency?Cryptocurrency, often called “crypto,” is a form of digital currency that uses cryptography (advanced math and code) to keep it secure.Keep learning in more of a financial aspect. You’ll also see rectangular dashed tags for What is Web3?What is Web3?Web3 is the idea of a decentralized internet powered by blockchain.Keep learning and  rounded dashed tags for What is DeFi?What is DeFi?DeFi stands for Decentralized Finance. It refers to a collection of applications and platforms built on blockchain that allow people to transact without banks.Keep learning specifically.

Learn more about the relationship between all the tags and their respective concept with our Interactive Mind Map.

FAQ

In practice, most people buy crypto through centralized exchanges, peer-to-peer platforms, or crypto ATMs, usually using fiat money like dollars or euros.

Crypto isn’t stored “in” an app or exchange the way money sits in a bank. It’s controlled through wallets that manage private keys. Wallets can be custodial (exchange-held) or non-custodial (self-managed), which introduces different security trade-offs.

These are cryptographic credentials that prove ownership of crypto. Losing them usually means losing access to funds permanently.

Many cryptocurrencies can experience large price swings in short periods, which affects investing, payments, and risk management.

Crypto legality and taxation vary by country, with different rules around trading, reporting, and usage depending on local laws.

Security risks such as hacks, scams, phishing, and smart contract failures exist. Crypto gives users more control, but also more responsibility for mistakes.

Consensus mechanisms like Proof of Work or Proof of Stake are what allow decentralized networks to agree on transactions without a central authority.

Holding coins is only one part of the ecosystem. Using DeFi apps, NFTs, or games involves interacting with smart contracts, paying gas fees, and understanding on-chain permissions.

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