Inactivity Leak

An inactivity leak is a protocol mechanism that gradually reduces the stake of validators who are offline or failing to participate in consensus. This process is designed to protect the network from stalling if a large portion of the validator set goes offline.

By slowly leaking the stake of inactive validators, the protocol reduces their influence and ensures that the remaining active validators can still achieve consensus. This mechanism is distinct from punitive slashing, as it is primarily a safety feature to maintain liveness rather than a penalty for malice.

The leak continues until the validator returns to active status or their stake is depleted below a certain threshold. It is a critical feature for the resilience of proof of stake systems in the face of widespread network failures or connectivity issues.