21 BTCSatoshi (unit)
In plain words
A satoshi, or sat, is the smallest amount of bitcoin: one hundred-millionth of a coin. 1 BTC = 100,000,000 sats.
Short definition
The smallest unit: 1 BTC = 100,000,000 sats.
Why sats
Inside the protocol every amount is an integer count of satoshis; “BTC” with eight decimals is just how wallets display it. Many people price small payments in sats, and the Lightning Network goes further with millisatoshis for routing fees.
The unit is named after Satoshi Nakamoto. “Stack sats” became a meme for saving small amounts regularly (DCA).
See also
- 21 million supply capThere will never be more than 21 million bitcoins. Over 95% are already issued; the rest trickles out with each block until about 2140.
- DCADollar-cost averaging: buying a fixed amount on a fixed schedule.
- Lightning NetworkLightning is a payment network built on top of Bitcoin. Two parties lock bitcoin in a shared channel and then pay each other instantly and cheaply off-chain; payments can hop across channels to reach anyone.
- Stay humble, stack satsA sat is one hundred-millionth of a bitcoin. The advice: buy a little, regularly, keep it yourself and don't brag.
References
- Bitcoin Wiki: Units en.bitcoin.it