Bitcoin was the first cryptocurrency created in 2009 under the pseudonym Satoshi Nakamoto.

In April 2021, a new historical maximum of the bitcoin rate was recorded - more than $63,000 per bitcoin.

Ethereum (ETH) is the second largest cryptocurrency after bitcoin, but its technology is advanced and allows for the creation of smart contracts.

The total number of bitcoins is limited to 21 million, which makes it a deflationary asset.

The word "hodl" (HODL) comes from a typo in a forum post "I'm going to hodl" and has become a popular term for holding bitcoin in a long-term investment.

Existing cryptocurrency wallets can be hot or cold, depending on whether they are stored online or offline for greater security.

In 2010, crypto anarchist Laszlo Hangyaz published the now-famous "pizza for bitcoin" episode, buying two pizzas for 10,000 bitcoins.