- 3-level check: spot matches certified feed (<0.3%); environment_info=mainnet/testnet=false;
chain-level decisive: ETH_USDC-26JUN26-1650-P identical bid/ask/IV/delta on ccxt mainnet
vs Cerbero MCP (25.6/26.6/54.54%/-0.315)
- contamination was the OLD testnet token on get_historical, NOT Cerbero MCP itself
- Cerbero MCP gives real per-strike bid/ask/IV/greeks/OI + regime features ccxt lacks
(dealer gamma, gamma-flip, OI delta, liquidation, funding) -> usable for VRP validation
- no deep chain history -> multi-year VRP still model-priced, but model-vs-real calibration
now robust/repeatable. Token used only for verification, never logged/committed.
