# Ethos Reserve audit contest Code4rena · CDP stablecoin · 16th February 2023 · #28 A public audit contest on Code4rena (CDP stablecoin), completed on 16th February 2023. 0xSimao placed #28. His findings from it are not published individually. ## What Ethos Reserve is Ethos Reserve is a CDP stablecoin in the Liquity lineage: users open troves against ETH and BTC collateral to mint ERN, with individual and total collateralisation ratios gating operations, a stability pool absorbing liquidations, and a recovery mode that tightens the rules when the system-wide ratio falls below the critical threshold. Unlike its ancestor, the collateral is not idle: deposits are routed into yield-bearing vaults, and the yield subsidises the system, which makes the accounting between troves, the active pool and the vaults the heart of the system. ## Scope The Ethos Reserve core: troves, the active and stability pools, the yield-routing vaults and the recovery-mode logic. ## The contest [View the contest page](https://code4rena.com/audits/2023-02-ethos-reserve-contest)