[Temp Check] Add wstETH as a collateral on Base ETH Market, USDC Market on Arbitrum and Ethereum Mainnet

New Markets
23

A proposed oracle implementation is below. It borrows from AAVE’s capped price oracle idea. The key points are

  • wstETH → stETH uses Lido’s exchange rate value
  • stETH → ETH uses Chainlink provided value but is capped at 1 ETH (i.e. stETH market price is used if below one ETH, but market cannot be manipulated to value stETH over 1 ETH)
  • ETH → USD as provided by chainlink

This protects from upward price manipulation but still tracks downward price movements.

I think this is a good compromise between exchange and market values, but curious on communities opinions.

https://github.com/z3taproject/comet/blob/main/contracts/pricefeeds/WstETHUSDPriceFeed.sol

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