Bitcoin Difficulty
Difficulty is the protocol parameter that determines how 'hard' it is to find the next block - it's automatically re-adjusted based on the network's total hashrate to keep the average block time near 10 minutes.
This chart shows real data up to September 27, 2026. The live value is free on Cedvel - no subscription needed.
Source: difficulty (bitview.space / Bitcoin Research Kit)
What is it?
The protocol parameter that determines how 'hard' it is to find the next block - automatically re-adjusted based on the network's total hashrate to keep the average block time near 10 minutes.
How is it calculated?
Automatically adjusted based on the network's total hashrate: if hashrate rises, difficulty rises (so blocks don't come faster); if hashrate falls, difficulty falls.
How to read it
A difficulty increase is a delayed confirmation that net new mining power has been added to the network (and that mining remains profitable). A difficulty decrease (rare) points to a net loss of hashrate - historically overlapping with large price drops or regional miner shutdowns.
Things to watch out for
It's not the inverse of hashrate but a REACTION to it - it always updates with a roughly 2-week delay and doesn't reflect real-time miner behavior.
Historical usage
Difficulty has moved upward in nearly every adjustment period throughout mining history - a natural consequence of hashrate's long-term growth trend. The rare difficulty decreases have historically overlapped with large price drops or regional miner shutdowns.
Frequently Asked Questions
How is difficulty adjusted?
It's automatically adjusted based on the network's total hashrate (roughly every 2016 blocks, about every 2 weeks): if hashrate rises, difficulty rises; if hashrate falls, difficulty falls - the goal is to keep the average block time near 10 minutes.
What does a difficulty increase or decrease mean?
A difficulty increase is a delayed confirmation that net new mining power has been added to the network (that mining remains profitable). A difficulty decrease (rare) points to a net loss of hashrate.
Is difficulty a real-time indicator?
No - it's not the inverse of hashrate, it's a reaction to it; it always updates with a roughly 2-week delay and doesn't reflect real-time miner behavior.