0xfc63ef19…4f84sent to0x7b3c54e1…cc33·#25,381,338·view on Etherscan
setBorrowPerYearInterestRateBase(address,uint64)setBorrowPerYearInterestRateSlopeLow(address,uint64)deployAndUpgradeTo(address,address)setBorrowPerYearInterestRateBase(address,uint64)setBorrowPerYearInterestRateSlopeLow(address,uint64)deployAndUpgradeTo(address,address)# Optimism USDC and USDT IRM Updates\n## Summary\n\nGauntlet recommends an update to the interest rate model (IRM) on the Optimism **USDC** and **USDT** comets. The change raises the borrow rate base from 1.5% to 3.0% and flattens the borrow slope below kink, while leaving the supply curve, kink, and high-utilization slope unchanged. This is a deliberate realignment of the revenue mix: it shifts protocol earnings toward interest income and away from reliance on liquidation revenue, and it sharply reduces reserve depletion at the mid-range utilization where these markets spend most of their time.\n\nWe are proposing this as a scoped experiment on the Optimism USDC and USDT comets.\n\n## Recommended parameter changes\n\nApplied to the Optimism USDC and USDT comets:\n\n| Parameter | Current | Recommended |\n| ----------------------------------------- | ------- | ----------- |\n| `borrow_per_year_interest_rate_base` | 1.50% | 3.00% |\n| `borrow_per_year_interest_rate_slope_low` | 0.0278 | 0.011111 |\n\nThe supply side is held entirely constant. The entire effect of this proposal comes from the borrow curve below the kink.\n\nMore details about the proposal can be found [here](https://www.comp.xyz/t/gauntlet-optimism-usdc-and-usdt-irm-updates/7880)