The technology behind cryptocurrencies operates via blockchain, a decentralized digital ledger that records all transactions across a distributed network of computers. This ensures transparency and security since each block of data is cryptographically linked to its predecessor. Users engage with cryptocurrencies through wallets that store their digital assets and interact with the blockchain network. Consensus mechanisms, such as Proof of Work or Proof of Stake, validate transactions and maintain network integrity. This technology enables peer-to-peer transactions without the need for a centralized financial institution, enhancing accessibility and decentralization in finance.