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What Is Cryptocurrency? A Complete Guide to Crypto and Digital Currencies

Cryptocurrency, or crypto, is a digital currency designed to work as a medium of exchange for purchasing goods and services.

By Adam LevyUpdated May 25, 2026 at 11:34 PM EST | Fact-checked by Frank Bass

Key Points

  • Cryptocurrency transactions use digital wallets and a blockchain to verify and record transactions.
  • There are around 9,000 cryptocurrencies, each serving different uses and built on various blockchains.
  • Bitcoin and Ethereum are the top cryptocurrencies, highly valued for their widespread use and innovative platforms.

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