{
  "generated_at": "2026-07-30T17:44:48.317486+00:00",
  "title": "Blocklist archaeology — newly-shipped censorship keywords",
  "scope": "keywords newly present in successive LINE client blocklists; each addition is a directive the platform labelled itself, not an inference from deletion",
  "source": "citizenlab/chat-censorship",
  "attribution": "The Citizen Lab, University of Toronto — chat-censorship corpus (https://github.com/citizenlab/chat-censorship). Asia Chats: Investigating Regionally-based Keyword Censorship in LINE (2013-2014).",
  "licence_note": "NO licence file in the upstream repository and no terms stated in its README — treated as all-rights-reserved. Cached under data/ (gitignored), never redistributed from this repo.",
  "app": "line",
  "completeness": "exhaustive",
  "versions_compared": [
    "v20",
    "v21",
    "v22",
    "v23",
    "v24",
    "v25"
  ],
  "n_versions": 6,
  "n_additions": 503,
  "additions_by_version": {
    "line v21": 141,
    "line v22": 309,
    "line v23": 1,
    "line v24": 48,
    "line v25": 4
  },
  "severity_distribution": {
    "medium": 445,
    "high": 58
  },
  "n_gazetteer_proposals": 17,
  "gazetteer_proposals": [
    {
      "term": "鲁木齐",
      "total_support": 5,
      "association": 1.0,
      "score": 1.7918,
      "state": "propose"
    },
    {
      "term": "乌鲁木",
      "total_support": 5,
      "association": 1.0,
      "score": 1.7918,
      "state": "propose"
    },
    {
      "term": "鲁木",
      "total_support": 5,
      "association": 1.0,
      "score": 1.7918,
      "state": "propose"
    },
    {
      "term": "木齐",
      "total_support": 5,
      "association": 1.0,
      "score": 1.7918,
      "state": "propose"
    },
    {
      "term": "乌鲁",
      "total_support": 5,
      "association": 1.0,
      "score": 1.7918,
      "state": "propose"
    },
    {
      "term": "安门",
      "total_support": 5,
      "association": 1.0,
      "score": 1.7918,
      "state": "propose"
    },
    {
      "term": "天安",
      "total_support": 5,
      "association": 1.0,
      "score": 1.7918,
      "state": "propose"
    },
    {
      "term": "声援薄熙",
      "total_support": 3,
      "association": 1.0,
      "score": 1.3863,
      "state": "propose"
    },
    {
      "term": "援薄熙来",
      "total_support": 3,
      "association": 1.0,
      "score": 1.3863,
      "state": "propose"
    },
    {
      "term": "声援薄",
      "total_support": 3,
      "association": 1.0,
      "score": 1.3863,
      "state": "propose"
    },
    {
      "term": "援薄熙",
      "total_support": 3,
      "association": 1.0,
      "score": 1.3863,
      "state": "propose"
    },
    {
      "term": "李锐",
      "total_support": 3,
      "association": 1.0,
      "score": 1.3863,
      "state": "propose"
    },
    {
      "term": "援薄",
      "total_support": 3,
      "association": 1.0,
      "score": 1.3863,
      "state": "propose"
    },
    {
      "term": "坦克",
      "total_support": 4,
      "association": 0.75,
      "score": 1.0397,
      "state": "propose"
    },
    {
      "term": "学生",
      "total_support": 4,
      "association": 0.75,
      "score": 1.0397,
      "state": "propose"
    },
    {
      "term": "买枪",
      "total_support": 7,
      "association": 0.5714,
      "score": 0.9196,
      "state": "propose"
    },
    {
      "term": "杀人",
      "total_support": 9,
      "association": 0.4444,
      "score": 0.7152,
      "state": "propose"
    }
  ],
  "gazetteer_proposals_note": "candidates for the euphemism gazetteer, REPORTED not merged — the gazetteer is human-ratified by design and this runner never writes to it. Expect substring fragments of the same coinage (乌鲁木齐 also yields 乌鲁木/鲁木齐/木齐), which a ratifier collapses; the count is proposals, not distinct discoveries.",
  "novelty_index": null,
  "novelty_index_note": "not computed: compute_selectivity_novelty ranks recency-weighted attention over a live deletion stream, and a decade-old corpus of six discrete version diffs has no meaningful recency structure — every term is added once. Withheld rather than computed with stretched windows to yield a number that would not mean anything.",
  "evidence_sample": [
    {
      "term": "为薄熙来平反",
      "version": "line v21",
      "severity": "high",
      "observed_bound": "2014-04-15T18:30:42+00:00"
    },
    {
      "term": "声援 薄熙来",
      "version": "line v21",
      "severity": "high",
      "observed_bound": "2014-04-15T18:30:42+00:00"
    },
    {
      "term": "声援薄熙来",
      "version": "line v21",
      "severity": "high",
      "observed_bound": "2014-04-15T18:30:42+00:00"
    },
    {
      "term": "声援薄熙来书记",
      "version": "line v21",
      "severity": "high",
      "observed_bound": "2014-04-15T18:30:42+00:00"
    },
    {
      "term": "薄公平反",
      "version": "line v21",
      "severity": "high",
      "observed_bound": "2014-04-15T18:30:42+00:00"
    },
    {
      "term": "重庆 声援薄熙来",
      "version": "line v21",
      "severity": "high",
      "observed_bound": "2014-04-15T18:30:42+00:00"
    },
    {
      "term": "11月5日至15日 出租车禁行",
      "version": "line v22",
      "severity": "high",
      "observed_bound": "2014-04-30T15:56:55+00:00"
    },
    {
      "term": "18大",
      "version": "line v22",
      "severity": "high",
      "observed_bound": "2014-04-30T15:56:55+00:00"
    },
    {
      "term": "198964",
      "version": "line v22",
      "severity": "high",
      "observed_bound": "2014-04-30T15:56:55+00:00"
    },
    {
      "term": "319政变",
      "version": "line v22",
      "severity": "high",
      "observed_bound": "2014-04-30T15:56:55+00:00"
    },
    {
      "term": "38军",
      "version": "line v22",
      "severity": "high",
      "observed_bound": "2014-04-30T15:56:55+00:00"
    },
    {
      "term": "64 学生",
      "version": "line v22",
      "severity": "high",
      "observed_bound": "2014-04-30T15:56:55+00:00"
    }
  ],
  "evidence_sample_note": "a bounded sample of 12 of 503 additions, published as cited evidence with attribution; the corpus itself is cached locally and not redistributed by this project",
  "velocity": null,
  "velocity_note": "a list observation date is an UPPER BOUND on the directive, not its timestamp — no latency is derived from it",
  "decode_warnings": [],
  "skipped": [],
  "provenance": {
    "line-v20.txt": {
      "sha256": "48ed4831ab1ffeb1074807039e0813493e83bbb67746eb33d38c840c98c334b1",
      "source_url": "https://raw.githubusercontent.com/citizenlab/chat-censorship/master/LINE/raw-block-lists/line-v20.txt",
      "observed_at": "2014-04-15T18:30:42Z",
      "date_basis": "earliest-commit-touching-file"
    },
    "line-v21.txt": {
      "sha256": "9dec4c60ef5dce882ab873876d7c3cd51ba95632bcc0438391de43a487df0378",
      "source_url": "https://raw.githubusercontent.com/citizenlab/chat-censorship/master/LINE/raw-block-lists/line-v21.txt",
      "observed_at": "2014-04-15T18:30:42Z",
      "date_basis": "earliest-commit-touching-file"
    },
    "line-v22.txt": {
      "sha256": "9af5eca9bb1ff85ba5cff6a256d9fdc258a150bdbbace410b4353a33b79ad7e5",
      "source_url": "https://raw.githubusercontent.com/citizenlab/chat-censorship/master/LINE/raw-block-lists/line-v22.txt",
      "observed_at": "2014-04-30T15:56:55Z",
      "date_basis": "earliest-commit-touching-file"
    },
    "line-v23.txt": {
      "sha256": "bea79b4b1a7c57785c8741911cf89f24b2b65793393e49fda7498746ade1f3df",
      "source_url": "https://raw.githubusercontent.com/citizenlab/chat-censorship/master/LINE/raw-block-lists/line-v23.txt",
      "observed_at": "2014-07-08T15:37:04Z",
      "date_basis": "earliest-commit-touching-file"
    },
    "line-v24.txt": {
      "sha256": "b5d7ed8a29afdc6f9d1fc34d2b7c649668da39dc91ef896422cb8da46d10f4cd",
      "source_url": "https://raw.githubusercontent.com/citizenlab/chat-censorship/master/LINE/raw-block-lists/line-v24.txt",
      "observed_at": "2014-10-07T15:54:52Z",
      "date_basis": "earliest-commit-touching-file"
    },
    "line-v25.txt": {
      "sha256": "3d6a725d82de2047886c466dfff3682922cc9e31cba569a24b7f06a10e636a10",
      "source_url": "https://raw.githubusercontent.com/citizenlab/chat-censorship/master/LINE/raw-block-lists/line-v25.txt",
      "observed_at": "2014-10-07T15:54:52Z",
      "date_basis": "earliest-commit-touching-file"
    }
  }
}