How Does the Difficulty Adjustment Mechanism Protect the Network from Rapid Hashrate Fluctuations?

The difficulty adjustment mechanism protects the network by ensuring a stable block issuance rate despite rapid hashrate fluctuations. If a large amount of hashrate joins the network (e.g. from a rental market), blocks are found faster.

The mechanism then automatically increases the difficulty, slowing the block rate back to the target. Conversely, if hashrate leaves, difficulty decreases.

This stability is crucial for maintaining the predictable supply schedule and transaction finality, preventing malicious hashrate surges from disrupting the network.

What Is the Concept of “Difficulty Adjustment” and How Does It Relate to Sudden Hashrate Spikes?
How Does the “Difficulty Adjustment” Mechanism Protect the Blockchain from Rapid Hash Rate Fluctuations?
How Does a ‘Difficulty Adjustment’ Maintain a Consistent Block Time?
Why Does the Network’s Difficulty Target Change over Time?
How Does the Difficulty Adjustment Mechanism Respond to Changes in Total Network Hash Rate?
What Is ‘Transaction Finality’ and How Does It Differ across Various Blockchain Architectures?
Does the Difficulty Adjustment Affect the Total Supply Limit of a Cryptocurrency?
Does a Fixed Block Time or a Variable Block Time Make MEV More Predictable?

Glossar