What is Bitcoin?
BTCBitcoin is a peer-to-peer electronic cash system and the first cryptocurrency: a public ledger kept by miners who compete with computing power (proof of work) to add blocks.
The tokenBitcoin itself is the asset: it is sent between users, paid to miners as block rewards and fees, and its supply is capped by the protocol.
Supply and what is still to come
How many coins exist, how many can, who holds the part not yet circulating and what the schedule releases.
- Circulating supply
- 20.11 million BTC
- Total supply
- 20.11 million BTCin existence, locked or not
- Maximum supply
- 21.00 million BTCBitcoin's protocol halves the new coins per block every 210,000 blocks, so issuance stops at 20,999,999.9769
- Issued or unlocked
- 95.8%mined so far, of the maximum supply
- Supply in 10 years
- 20.85 million BTCthe protocol's issuance schedule, with blocks at the 10-minute target
A year in the market
Measured on the daily closes of our own US dollar price index.
- Return, past year
- −27.1%daily closes
- Volatility, past year
- 44%annualised, daily log returns
- Deepest fall from a peak, past year
- −44.8%daily closes
- Below its all-time high
- −39.8%high of $124,766 on 6 Oct 2025
Points to check
What our data shows that a holder should know. Each point is a measurement, not a rating.
None of our measured points stands out for this coin today.
Questions
What is Bitcoin?
Bitcoin is a peer-to-peer electronic cash system and the first cryptocurrency: a public ledger kept by miners who compete with computing power (proof of work) to add blocks.
What is BTC used for?
Bitcoin itself is the asset: it is sent between users, paid to miners as block rewards and fees, and its supply is capped by the protocol.
Is Bitcoin's supply capped?
Yes: at most 21.00 million BTC. 95.8% are issued or unlocked so far.
Where is Bitcoin traded?
On 11 of the 11 exchanges we read: 10 list spot pairs against the dollar or a dollar stablecoin and 11 list perpetual futures. The token finder lists every pair.
Supply from our own nodes or the project’s published figures, prices from our own indexes, listings from the exchanges’ own instrument lists. Last update