What is cryptocurrency
Cryptocurrencies are a class of digital assets built on blockchain technology and traded 24/7. Their appeal lies in their accessibility and potential for significant returns, although these opportunities come with substantial volatility.
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A cryptocurrency is a digital asset secured by cryptography and based on a blockchain network. It enables secure online transactions without relying on third-party intermediaries by using encryption algorithms and cryptographic techniques to verify transactions and control the supply of new coins.
Blockchain technology is a shared digital ledger that records transactions in interconnected data blocks. Each block contains a record of transactions that have been validated by participants on a network. Because copies of the blockchain are stored across multiple computers, the system is highly resistant to tampering and fraud.
Cryptocurrencies generally operate outside the direct control of governments and central authorities. However regulators in many jurisdictions oversee aspects of the cryptocurrency market. In the United States, for example, the U.S. Securities and Exchange Commission (SEC) regulates certain crypto-related activities and establishes rules for cryptocurrency exchanges, brokerages, and other market participants.
Classifying cryptocurrencies
Most cryptocurrencies fall into one of the following categories:
Payment/transactional cryptocurrencies are designed to function as digital payment methods without relying on centralized intermediaries like banks or governments. For example, Bitcoin (BTC).
Infrastructure (utility) cryptocurrencies allow developers to build and run smart contracts and decentralized applications (dApps) on their respective blockchains. For example, Ether (ETH) and Solana (SOL).
Stablecoins are designed to minimize volatility by pegging their value to stable assets, such as the U.S. dollar or gold. For example, Tether USD (USDT) and USD Coin (USDC).
Governance tokens give holders voting rights that allow them to participate in decisions regarding the future development of a blockchain project.
Security tokens represent ownership of traditional financial assets, such as stocks or real estate, and are subject to regulations.
Media and entertainment cryptocurrencies are designed to reward users for creating or engaging with digital content, games, gambling platforms, and social media.
Consensus mechanism
Decentralized cryptocurrency networks use a consensus mechanism — a system that allows all participants in the network to agree on which transactions are valid.
The two most common consensus mechanisms are Proof of Work (PoW) and Proof of Stake (PoS).
Proof of Work
Proof-of-work blockchains are secured by miners who compete to solve complex cryptographic puzzles. The first miner to solve the puzzle earns the right to add a new block of verified transactions to the blockchain and receives a predetermined cryptocurrency reward.
Proof of Stake
In a Proof of Stake system, validators replace miners. Participants stake their cryptocurrency for a chance to be selected to validate the next block of transactions and receive rewards.
The probability of being selected generally depends on factors such as the amount of cryptocurrency staked and the protocol's selection rules. After a validator proposes a new block, other validators verify its accuracy. Once enough validators approve the block, it is added to the blockchain. Rewards are typically distributed in proportion to the amount of cryptocurrency validators have staked.
Cryptocurrency market
Cryptocurrencies are traded in pairs. For example, BTC/USD represents Bitcoin priced in U.S. dollars, while ETH/BTC represents Ether priced in Bitcoin.
Cryptocurrency prices are driven primarily by supply and demand. Because cryptocurrencies are decentralized, they are generally less influenced by central bank monetary policy than traditional currencies. However, they can still be affected by broader economic conditions, government regulation, investor sentiment, and technological developments.
On a cryptocurrency exchange, you can buy or sell digital assets, much like trading stocks on a stock exchange. You can place market orders, which execute immediately at the best available price, or limit orders, which execute only at a specified price. Many exchanges also support stop-loss and take-profit orders, helping traders manage risk.
After purchasing cryptocurrency, you can transfer it to a crypto wallet or use a third-party custodian to store your assets.
If you don't want to own or manage cryptocurrency directly, you can gain exposure through crypto ETFs or ETFs that invest in companies operating in the cryptocurrency industry. To speculate on cryptocurrency price movements without owning the underlying assets, you can trade contracts for difference (CFDs). For example, Bitcoin ETFs and Ether ETFs.
Unlike traditional stock markets, cryptocurrency markets operate continuously, including on weekends and public holidays.
Cryptocurrency wallets
A cryptocurrency wallet is software or hardware that stores the private keys needed to access cryptocurrency holdings. Wallets may be custodial, where a third party manages the keys on the user's behalf, or non-custodial, where users retain full control and responsibility for their own assets.
Risks of investing in cryptocurrencies
Cryptocurrency markets are highly volatile, and prices can change significantly within short periods. You also face risks related to cybersecurity, fraud, operational failures, changing regulations, and the potential loss of access to funds if private keys or recovery phrases are lost.
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