Optimism USDC & USDT IRM Update — Reserve Impact

Proposal 588 executed July 1, 2026 · borrow base rate 1.5% → 3.0%, slope-low flattened · 14 days pre vs. 21 days post (through Jul 22) · source: BigQuery gauntlet-sim

Optimism USDC Comet — Reserves

Daily reserve balance (USD). Dashed line = execution.
Pre-change accrual~$28/day
Post-change accrual~$37/day
Change+29%

Optimism USDT Comet — Reserves

Daily reserve balance (USD). Dashed line = execution.
Pre-change accrual~-$8/day
Post-change accrual~$55/day
Changedegrowth → growth

Daily Reserve Change (Δ vs. prior day)

Isolates the accrual rate. Bars above zero = reserves growing that day. Step-ups around Jul 8-10 and Jul 16-17 are discrete events, not smooth accrual.