What Is a ‘Difficulty Bomb’ in the Context of Certain Cryptocurrency Roadmaps?
A difficulty bomb is a piece of code intentionally inserted into a Proof-of-Work blockchain's protocol that causes the mining difficulty to increase exponentially over time. This makes mining progressively harder and eventually impossible.
Its purpose is to force a planned transition from PoW to a PoS consensus mechanism, preventing the community from indefinitely delaying the upgrade.