lido

Call the Lido contract's `submit(address _referral)` payable function with your ETH value, passing address(0) if you have no referral. Check `getCurrentStakeLimit()` first for large deposits, since a daily staking limit can cause STAKE_LIMIT reverts.

stETH is a rebasing token whose balance increases daily with staking rewards, while wstETH is a non-rebasing wrapper representing a fixed number of stETH shares. Use wstETH in DeFi protocols and vaults because stored stETH balances become stale after each oracle report.

stETH transfers convert amounts to shares and back using integer division, rounding down twice, so recipients may receive 1-2 wei less than the sent amount. Use `transferShares()` for exact transfers and never assert exact balance equality.

Withdrawal requests enter a queue processed in order, with typical waits of 1-5 days depending on validator exits and oracle reports. Check `getWithdrawalStatus()` for `isFinalized`, then claim with checkpoint hints from `findCheckpointHints()`.

Yes, wstETH is the standard collateral form because its balance does not rebase, keeping vault accounting accurate. Value positions with `getStETHByWstETH()` or the Chainlink wstETH/ETH feed at 0x536218f9E9Eb48863970252233c8F271f554C2d0 with staleness checks.

Lido enforces a daily staking rate limit that replenishes gradually over time. Read `getCurrentStakeLimit()` before submitting and split large deposits into multiple transactions or wait for the limit to replenish.