Satoshi is the smallest unit of a Bitcoin (BTC). The unit is named after the pseudonymous creator(s) of Bitcoin, Satoshi Nakamoto. One Satoshi is equal to 0.00000001 Bitcoin, which is equivalent to the ratio of 100 million to 1.

Bitcoin is divisible up to eight decimal places, with each decimal place being a "Satoshi". So, for example, if the price of one Bitcoin is $50,000 USD, then one Satoshi would be worth $0.0005 USD. Satoshi is a popular unit that is used to facilitate the smaller transactions of Bitcoin. Moreover, crypto platforms use Satoshi as a secondary unit of account.