{
  "case": "agent-trace",
  "question": "Did the agent’s own actions leak into its record of what happened?",
  "domain": "AI provenance",
  "register": "detection",
  "status": "live",
  "verdict": "valid",
  "geometry_digest_v3": "67a6f95ee308a2884f73e071ed72bfb0326ba1b7d6da08a147e6ef10394009aa",
  "shares_computation_with": [
    "keepout-agent-trace",
    "takeout-agent-trace"
  ],
  "magnitude_is_ridge_set": true,
  "kit_sha256": "279e3b38c71a2b786fdac1035f8d254b102f009d760447d0153029f5c8646355",
  "page": "/agent-provenance/",
  "note": "The magnitude published for this case's self-authorship axis (|dg| = 85.774) is SET BY THE RIDGE, not measured from the data. Swept across nine values of lambda it tracks 1/lambda almost exactly — 999,980 at 1e-6, 85.774 at the shipped 0.01, 0.15 at 1 — because the green arm's n_tool_use column is constant, and a constant column's precision diagonal is pinned at 1/lambda by construction. The LOCATION holds: the strongest movement is this axis across four and a half decades of lambda. The SIZE is withdrawn as an effect size. Recorded 2026-08-21; the sweep is published at /sweep."
}