Why do some blocks deviate significantly from the target block time?

By December 16, 2018 No Comments

The chances of not getting a block in blocktime * K is approximately e(-K).

This means that the chance of getting a ≥30-minute block (K=6) is ≈0.25%. So even though our target block time is 5 minutes, roughly 1 in 400 blocks can take more than at least 30 minutes to find.