Bitcoin network, live
Difficulty, network hashrate, the next adjustment and the countdown to the next halving – and what all of it means for your own miner at home.
Difficulty
125.81 T
Last adjustment -1.31 %
Network hashrate
921 EH/s
3-day average
Block height
964,974
Currently 3.125 BTC per block
Next difficulty adjustment
Every 2016 blocks, roughly every two weeks.
Estimated change
+1.15 %
Period 65.8 % done
- Blocks to go
- 690
- At block
- 965,664
- Expected
- Sep 5, 2026
- Current block time
- 9.9 min
Blocks faster than 10 minutes push the difficulty up, slower blocks push it down.
Countdown to halving #5
At block 1,050,000 · April 2028
Block subsidy
then halves to
3.125 → 1.5625 BTC
Projected with 10 minutes per block: over two years the difficulty adjustment pulls any deviation back to that average.
What this means for your miner
At the current difficulty, this is the average waiting time until a miner finds a block on its own. It is an average, not a deadline – solo mining is a lottery where every single block is a fresh draw.
| Miner | Hashrate | Average wait for a block | |
|---|---|---|---|
| Bitaxe Gamma 601 | 1.30 TH/s | 13,171 years | View |
| Bitaxe Copperzilla | 1.30 TH/s | 13,171 years | View |
| Nerdaxe Gamma | 1.30 TH/s | 13,171 years | View |
| Bitaxe GT 801 | 2.15 TH/s | 7,964 years | View |
| Nerdaxe Gaia | 2.60 TH/s | 6,585 years | View |
| Bitaxe Supra Hex 702 | 4.20 TH/s | 4,077 years | View |
| NerdQaxe ++ | 4.80 TH/s | 3,567 years | View |
| Avalon Nano 3S | 6.00 TH/s | 2,854 years | View |
| NerdOctaxe | 12.00 TH/s | 1,427 years | View |
| NerdOctaxe Hydro | 14.00 TH/s | 1,223 years | View |
Formula: difficulty × 2³² ÷ hashrate. Want to add electricity cost and the value of a block? Mining calculator
Why the difficulty exists
Bitcoin wants a block roughly every ten minutes – no matter whether ten computers or a million machines are mining. Every 2016 blocks the network compares how long the last period actually took and corrects the difficulty accordingly, by at most a factor of four in either direction. That is the whole regulating mechanism: no committee, no vote, just arithmetic that every node performs identically.
What happens at a halving
Every 210,000 blocks the reward for a new block is cut in half. It started at 50 BTC in 2009; today it is 3.125 BTC, and after the next halving it will be 1.5625 BTC. This is how the 21 million cap is enforced – not by a rule that stops issuance, but by a series that keeps halving until nothing is left to halve.
Frequently asked questions
What is the Bitcoin mining difficulty?
The difficulty determines how hard it is to find a valid block. Every 2016 blocks – roughly every two weeks – the network adjusts it so that a block takes about ten minutes on average, no matter how much hashrate is online.
When is the next Bitcoin halving?
The next halving happens at block 1,050,000, estimated for April 2028. The block subsidy then drops from 3.125 to 1.5625 BTC.
Does the difficulty affect my solo mining chances?
Yes, directly. Your expected waiting time for a block is difficulty × 2^32 ÷ your hashrate. If the difficulty rises, the wait gets longer with the same hardware.
Why does the estimated adjustment keep changing?
It is extrapolated from the blocks found so far in the current period. Early in a period a few fast or slow blocks move the estimate a lot; it stabilises towards the end.
Data: mempool.space · updated Sep 1, 05:27 (cached for 5 min)