Cryptocurrency
Cryptocurrency is a digital asset designed to work as a medium of exchange, secured by cryptography and typically recorded on a decentralized blockchain rather than issued or controlled by a central bank.
Definition
Cryptocurrency is a digital asset designed to work as a medium of exchange, secured by cryptography and typically recorded on a decentralized blockchain rather than issued or controlled by a central bank.
Overview
Unlike traditional currency, cryptocurrency has no central issuing authority. Instead, ownership and transfers are tracked on a blockchain, with cryptographic keys giving holders exclusive control over their funds and network-wide consensus rules preventing double-spending. Bitcoin, launched in 2009, was the first cryptocurrency and remains the largest by market value, designed primarily as a store of value and payment network. Ethereum followed with a broader vision, adding smart contracts that let developers build programmable financial applications on top of its native currency, ether. Thousands of other cryptocurrencies have since launched, serving purposes ranging from payments and governance to powering specific decentralized applications. Cryptocurrencies are typically stored in software or hardware wallets and traded on centralized or decentralized exchanges. Prices are often highly volatile, and regulatory treatment varies significantly by country, which continues to shape how mainstream the asset class becomes.
Key Concepts
- Decentralized issuance and transfer without a central bank
- Cryptographic key pairs control ownership and authorize transactions
- Transactions recorded on a public or permissioned blockchain
- Supply and issuance rules are typically fixed by protocol code
- Can be transferred globally without traditional banking intermediaries
- Prices are generally more volatile than traditional fiat currencies
- Wide variation in regulatory treatment across jurisdictions