BTC
Rank 1
Layer 1 blockchain
Bitcoin
$81,230
-3.82% 24H
-0.78% 7D
Market cap
Market cap
$1.63T
59.65% of the market
Fully diluted
Fully diluted
$1.63T
+0.00% above market cap
Volume, 24h
Volume, 24h
$33.58B
2.06% of market cap
Circulating
Circulating
20.10M BTC
of 21.00M maximum
From all-time high
From all-time high
-35.57%
high on 06 Oct 2025
Volatility, 30d
Volatility, 30d
24.3%
annualized from daily moves
Bitcoin block subsidy halving
Scheduled at block 1,050,000. 77,417 blocks remain at the time of writing; the date is projected from the network's 10-minute target block interval and will move as block times vary.
Blockchair block height, projected on the protocol's own schedule · estimated date
11 Apr 2028
Bitcoin difficulty retarget
Projected change of +4.90% at block 973728. The projection moves until the period closes.
mempool.space · estimated date
29 Oct 2026
Bitcoin difficulty retarget
Projected change of +6.07% at block 971712. The projection moves until the period closes.
mempool.space · estimated date
16 Oct 2026
Bitcoin difficulty retarget
Projected change of -0.13% at block 969696. The projection moves until the period closes.
mempool.space · estimated date
03 Oct 2026
Bitcoin difficulty retarget
Projected change of +4.07% at block 967680. The projection moves until the period closes.
mempool.space · estimated date
19 Sep 2026
Bitcoin difficulty retarget
Projected change of +1.18% at block 965664. The projection moves until the period closes.
mempool.space · estimated date
05 Sep 2026
Fourth Bitcoin halving
The block subsidy fell from 6.25 BTC to 3.125 BTC at block 840,000.
Protocol and public record
20 Apr 2024
United States spot bitcoin ETFs begin trading
The first US-listed spot bitcoin exchange-traded products list after Securities and Exchange Commission approval of their applications.
Protocol and public record
11 Jan 2024
Taproot activates
Schnorr signatures and Tapscript activate on Bitcoin at block 709,632.
Protocol and public record
14 Nov 2021
Third Bitcoin halving
The block subsidy fell from 12.5 BTC to 6.25 BTC at block 630,000.
Protocol and public record
11 May 2020
Second Bitcoin halving
The block subsidy fell from 25 BTC to 12.5 BTC at block 420,000.
Protocol and public record
09 Jul 2016
First Bitcoin halving
The block subsidy fell from 50 BTC to 25 BTC at block 210,000.
Protocol and public record
28 Nov 2012
Bitcoin genesis block
The first block of the Bitcoin blockchain is mined, beginning the chain's history.
Protocol and public record
03 Jan 2009