All dollar valuations seen in zk.money are derived with use of oracles provided by Chainlink.
Chainlink provides no direct oracle for wstETH, but does provide an oracle for stETH. We use this stETH oracle in conjunction with the
getStETHByWstETH method on the Lido contract to calculate a wstETH dollar valuation.
Element fixed yield positions
Over time we interpolate between the asset quantitiy locked in your position and its promised output. The interpolated quanity is then given a dollar valuation with use of Chainlink.