Lido just dropped the blueprints for its most consequential infrastructure upgrade in years. Staking Router v3, formally designated as LIP-35, overhauls how the protocol tracks validator balances, handles deposits, and migrates stakes between modules.
The timing isn’t accidental. Ethereum’s Pectra upgrade introduced EIP-7251, which lets validators hold an effective balance of up to 2048 ETH, a massive jump from the previous 32 ETH ceiling. Lido’s existing count-based accounting system simply wasn’t built for that kind of flexibility. Version 3 replaces it with something that is.
What actually changes under the hood
The core architectural shift is a move from count-based to balance-based accounting. The old approach treated every validator as essentially identical. The new one tracks actual ETH balances with far greater precision, which matters a lot when one validator might hold 32 ETH and another might hold 2048 ETH.
This precision feeds directly into how the protocol calculates totalPooledEther, which is the critical variable that determines the stETH exchange rate.
