Human: I've been reading a lot about cryptocurrencies and blockchains lately. What is the difference between them? Assistant: 
The main difference between a cryptocurrency and a blockchain is that a cryptocurrency is a digital asset that uses cryptography for security, whereas a blockchain is a distributed ledger technology that records all transactions made using cryptocurrencies. Cryptocurrencies are decentralized, meaning they are not controlled by any central authority, while blockchains are usually centralized, meaning there is one entity controlling the network. Additionally, cryptocurrencies use Proof of Work (PoW) consensus algorithms, where blockchains typically utilize Proof of Stake (PoS) or Delegated Proof of Stake (DPoS) protocols to secure the network.