{
  "step": "C270",
  "date": "2026-09-24",
  "question": "Transport the C269 closing17K rectangle into the fixed C266 local display in both seasonal components",
  "correspondence": "y=q+8993",
  "cumulative_branch_maps": {
    "Flood": "q+5290",
    "reflected_Shem": "-(q+5888)"
  },
  "target_regular_sources": [
    "SP G3 primary Noah birth3710",
    "SP G3 Flood start3110"
  ],
  "intermediate_source_check": "C269 N04 cumulativeFlood -5285 maps to reflectedSP G2 primaryNoah3708; retain inherited branch role only",
  "derived_maps": "Compose fixed cumulative maps with inverseT8993; no coefficient fitting",
  "phase_tests": [
    "Both seasonal components",
    "OriginalBC versus reflectedAD source ancestry",
    "Order reversal on negative branch",
    "Local J1 pairing",
    "Existing eta=1000(x-1) values"
  ],
  "limits": [
    "Role-specific branch maps, not one global affine map",
    "No new independent witness or historical event",
    "No additional Gear or companion campaign",
    "C271 not executed"
  ],
  "status": "declared before verifier execution"
}