Epoch Based Recalibration

Epoch based recalibration is the process where a blockchain network updates its difficulty level only after a fixed number of blocks, known as an epoch, have been processed. During an entire epoch, the difficulty remains constant, regardless of changes in the total network hashrate.

This approach provides a period of stability but can lead to significant block time fluctuations if the hashrate changes dramatically mid-epoch. It is a common design choice for major networks, as it prevents frequent, noisy adjustments that could destabilize the consensus process.

By waiting for an epoch to complete, the network gathers enough data to make a more accurate adjustment based on the actual observed performance of the miners over that specific timeframe.