Perplexed by the world of cryptocurrencies? Here's a quick primer of the industry terms.

Bitcoin

The world's first so-called digital currency. The concept for bitcoin was published online in 2009, written under the still-unidentified pseudonym Satoshi Nakamoto. Bitcoin was groundbreaking because it can be sent or received without the need for a central administrator, such as a bank. The underlying technology that allows people to transact with one another directly is called the blockchain.