Bitcoin Info
Useful Bitcoin knowledge, quick facts, and context — all in one place.
Max Supply
21,000,000 BTC
Block Time
~10 minutes
Smallest Unit
1 satoshi (0.00000001 BTC)
Created
2009 by Satoshi Nakamoto
Halving Cycle
Every 210,000 blocks (~4 years)
Consensus
Proof of Work
Quick Glossary
Sats
Short for satoshis, the smallest unit of Bitcoin. 100,000,000 sats = 1 BTC.
HODL
Slang for holding Bitcoin long-term rather than trading it.
Mempool
The pool of unconfirmed transactions waiting to be added to Bitcoin's blockchain.
UTXO
An Unspent Transaction Output — the fundamental unit of value Bitcoin transactions spend.
Halving
An event roughly every 4 years that cuts the rate of new BTC issuance in half.
Cold Wallet
A wallet whose private keys are stored fully offline, away from internet-connected devices.