A Validator Exit Queue is a structured waiting list within a Proof-of-Stake blockchain for network participants who wish to cease their role as validators and withdraw their staked digital assets. Validators requesting to exit enter this queue, and their assets are released after a specified processing period. This mechanism manages the orderly departure of validators.
Context
This queue plays a vital role in maintaining the stability and security of Proof-of-Stake networks by preventing sudden, large-scale validator exits that could compromise consensus. The length and processing speed of the validator exit queue can impact staker liquidity and network responsiveness. Protocol designers aim to optimize this mechanism to balance network security with validator flexibility.
Introducing the MINSLACK mechanism, this work formally resolves the PoS utility-security trade-off by dynamically constraining validator exits to maintain crypto-economic safety.
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