Satoshi (the unit)

In plain words

One bitcoin splits into 100 million satoshis — sats. A sat is the smallest amount Bitcoin can move. Prices are honest in sats: a coffee is thousands of sats, not 0.0000-something of a coin. No one needs to buy a whole bitcoin. Everyone is really trading sats.

Why it matters

• "Too expensive" is a confusion — you buy fractions, not trophies.
• Fees and Lightning payments are priced in sats; you will see them everywhere.
• Easier arithmetic than eight decimal places.

Not to be confused with

• Satoshi Nakamoto — the creator the unit is named after.

Go deeper

• Unit bias
• Fees
• Satoshi Nakamoto