Sats in bitcoin refers to the smallest unit of measurement in the cryptocurrency, with 1 satoshi equaling 0.00000001 bitcoin.
Sats are used to express the value of bitcoin transactions, which can range from a few sats to millions or even billions. The term is named after Satoshi Nakamoto, the pseudonym used by the person or group who created bitcoin.
Sats in bitcoin is used to allow for more actual transactions and to prevent the loss of value due to inflation. The use of sats in bitcoin transactions can also make it easier to transact with smaller amounts of bitcoin, which is important for merchants who may only want to accept small quantities for specific goods or services.