rsETH

rsETH is Kelp DAO's liquid restaked ETH token.

rsETH is Kelp DAO's liquid restaked ETH token. No direct rsETH/USD Chainlink feed exists, so this ICustomPriceFeed adapter combines Kelp's rate provider with the NAV's primary ETH/USD price.

Source: rsETH_CustomPriceFeed.sol

Mainnet feed. The L2 deployments use a different oracle composition — see rsETH (L2).

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Approach

getLatestRate() (rate provider) × ETH/USD.

rsETH (Mainnet) price feed — how its oracle inputs compose into a USD price, with the staleness gate.

The ETH/USD term is sourced from the NAV's own selector — see Base/USD from the NAV's own selector.

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Price calculation

price = getLatestRate() (18) × (ETH/USD) (8) / 1e18      // USD, 8 dec

Input	Source	Description
getLatestRate	IRsETHRateProvider.getLatestRate() (18 dec)	rsETH/ETH exchange rate
ETH/USD	NAV base — getPriceDataNoDivergence(WETH) (8 dec)	the NAV's primary WETH/USD price

The rate comes from Kelp DAO's Multi-Chain Rate Provider, updated by Kelp's own oracle infrastructure. The rate provider address is validated only as a non-zero address (not as a Chainlink-shaped oracle). Output decimals are inherited from the ETH/USD feed (8).

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Constructor

constructor(
    address rsEth_,
    address rateProvider_,
    address nav_,
    address baseAsset_
)

Parameter	Description
rsEth_	rsETH token address (also the supported underlying)
rateProvider_	Kelp DAO Multi-Chain Rate Provider
nav_	NAVCalculator (proxy) — supplies the base asset's USD price via getPriceDataNoDivergence
baseAsset_	the registered base asset whose USD price is read (WETH)

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Staleness

getLatestPrice() returns stale if getLatestRate() returns 0, or if the NAV reports the base asset (WETH) stale — all its feeds stale. The base leg's updatedAt comes from the NAV's selected WETH feed. The rate provider call has no independent heartbeat.

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Chains

Deployed on Ethereum. For the rollup deployment, see rsETH (L2).