{
  "handle": "DriftWatch",
  "mechanism": "Reputation via micro-deviation detection. 1. Baseline: establish behavioral frequency over `window_size` samples. 2. Sample: continuous high-resolution observation. 3. Detect: alert when {{distance}}(Current, Baseline) exceeds `threshold`. 4. Witness: aggregated peer reports. Tracks behavioral consistency against a baseline {{aggregate}} of historical actions.",
  "gloss": "Reputation scoring via behavioral deviation from baseline (2-sigma alert)",
  "failure_modes": [
    "Baseline walked: the subject changes more slowly than the baseline recomputes, so no alert fires.",
    "Witness collusion: coordinated false drift reports.",
    "False reports: a single malicious witness.",
    "Cold start: no baseline yet, so the watcher is silent through the establishment window.",
    "Baseline gaming: {{agent}} varies early to establish a wide baseline.",
    "Alert flood: continuous sampling against a sensitive threshold alerts at its false-positive rate."
  ],
  "invariants": [
    "Baseline is immutable while a sample is judged against it.",
    "Baseline recomputation interval and source window are declared.",
    "Alert when {{distance}}(Current, Baseline) > `threshold`, in the units {{distance}} returns."
  ],
  "preconditions": [
    "Baseline state is established"
  ],
  "parameters": [
    {
      "name": "threshold",
      "type": "Float",
      "range": "[0.0, inf)",
      "description": "Trigger in the units {{distance}} returns — not normalised, not sigma multiples."
    },
    {
      "name": "window_size",
      "type": "Integer",
      "range": "[10, 10000]",
      "description": "Samples forming the baseline"
    },
    {
      "name": "recompute_interval",
      "type": "Integer",
      "range": "[0, 100000]",
      "description": "Samples between baseline rebuilds; 0 pins it permanently."
    }
  ],
  "_meta": {
    "tier": 1,
    "ring": 0,
    "supersedes": [
      "sema:DriftWatch#mh:SHA-256:a20dcee6f5453e3b61973fcf01aebd6a5ed4cfb97d1402a4ed970d8629a55a69",
      "sema:DriftWatch#mh:SHA-256:49b6f6d68dbda93034116865bb93a7bd08eff23de49a2eef87af80a40fe4a9f5",
      "sema:DriftWatch#mh:SHA-256:37cf935687877e2a31c4cd75287e2bc7c814b49a3569203021854988f39abe9e"
    ],
    "path": [
      "Society",
      "Protocols"
    ]
  },
  "sema_id": "sema:DriftWatch#mh:SHA-256:b696959258eb3c48ce11055634b107451d5a500bc8ba19693db4c30b5f5033bf",
  "sema_ref": "DriftWatch#b696",
  "sema_stub": "b696",
  "dependencies": {
    "references": {
      "agent": "sema:Agent#mh:SHA-256:e127459069739fffc96a71d54ef6e8c97ca53471d5349c16aa72a092a33756cd",
      "aggregate": "sema:Aggregate#mh:SHA-256:2db6858c061515fa2257c96f4a6e4392164e9a118adc6874c69cf2279b877077",
      "distance": "sema:Distance#mh:SHA-256:dfdfe0610f91741e27f87042fc396eab765c4e48aa20fdfc0dfa7152d1333893"
    }
  },
  "sema_layer": "Society",
  "sema_category": "Protocols",
  "used_by": {
    "references": {
      "RegimeSense": "sema:RegimeSense#mh:SHA-256:50396d316674bf65b204938ee8cecc48cf294223cdb90c9789d6a72bb542cb07"
    }
  }
}