What Happens If a Selected PoS Validator Fails to Sign the Block in Time?

If a selected PoS validator fails to sign the block within the allocated time window, the network typically proceeds to select the next validator from the queue or a new random selection is triggered. The validator who failed to sign may face a penalty, such as a temporary lock-up of their stake, depending on the protocol's slashing rules.

This mechanism ensures network liveness and penalizes non-participation or malicious downtime.