saveDAI combines interest and insurance together to make it dead simple to insure your savings account.
The interest-earning power of saveDAI comes from cDAI, an interest-generating version of DAI obtained by lending DAI via the Compound Protocol.
The insurance component of saveDAI comes from ocDAI, a token produced by the Opyn Protocol that represents an option to redeem for the initial value of cDAI. Each ocDAI token insures the principal for one cDAI token.