Deterministic Oracles

Spectra offers semi-deterministic pricing models for the Principal Token (PT). Those oracles match the redemption value of the PT at maturity, that is one unit of underlying adjusted by the ptRate .

We implement various discounting models, whose logic we explain in the subsequent pages.

To fetch the latest PT price in terms of underlying, one queries the latestRoundData() method from the SpectraPriceOracle contract. Dependent on the discounting model chosen at construction, this will either return the PT price in underlying discounted according to the linear discount model or according to the zero-coupon bond model.