{
 "schemaVersion": "1.0.0",
 "constitutionVersion": "1.0.0",
 "createdAt": "2026-08-12T00:00:00Z",
 "description": "Append-only Evidence Passport records. Old revisions are immutable; corrections create a new revision and preserve the previous permalink.",
 "entity": {
  "type": "project",
  "id": "beijing-traffic-brain",
  "title": "Beijing TOCC Traffic Coordination Center",
  "canonicalUrl": "https://1001smartcities.org/projects/beijing-traffic-brain/"
 },
 "currentRevisionId": "2026-08-22-evidence-baseline",
 "revisions": [
  {
   "id": "2026-08-22-evidence-baseline",
   "createdAt": "2026-08-22T09:00:00Z",
   "effectiveAt": "2026-07-17",
   "changeType": "baseline",
   "summary": "Created the first structured Evidence Passport with 4 claims and 3 source dossiers.",
   "preparedBy": {
    "type": "automation",
    "label": "AI-assisted evidence preparation",
    "humanApproved": false
   },
   "review": {
    "status": "unreviewed",
    "by": null,
    "date": null,
    "note": "Awaiting operator and domain-expert review; publication of this revision implies neither."
   },
   "changes": [
    {
     "operation": "add",
     "path": "/evidencePassport",
     "summary": "Added claim-level evidence mapping and source dossiers."
    },
    {
     "operation": "add",
     "path": "/revisionHistory",
     "summary": "Established a permanent, hash-addressed baseline revision."
    }
   ],
   "snapshotHash": "sha256:9414972eeab43e8d2a79840359bf57eec5d084e4124b4ffa70a2756098392de2",
   "snapshot": {
    "asOf": "2026-07-17",
    "projectFingerprint": "sha256:0381ef780d298ef4eb34c8284ce04d1911aa4a77645f042e716837381b562792",
    "assurance": {
     "status": "unreviewed",
     "scope": "evidence-passport-revision",
     "statement": "AI-assisted structural preparation. This revision has not been reviewed by a human or subject-matter expert.",
     "machineChecks": [
      "schema",
      "publication-diff-contract",
      "material-project-fingerprint",
      "claim-text-drift",
      "source-reference-resolution",
      "complete-source-dossier",
      "snapshot-hash"
     ]
    },
    "projectState": {
     "status": "live",
     "outcome": "ongoing",
     "evidenceGrade": "official",
     "timeline": {
      "started": 2011,
      "ended": null
     }
    },
    "governance": {
     "operator": "Beijing Municipal Transport Commission (TOCC)",
     "actorTypes": [
      "city-government"
     ],
     "fundingModel": "public",
     "fundingDescription": null,
     "cost": null,
     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
    "claims": [
     {
      "id": "clm-006d0e4249d0158b",
      "field": "snippet",
      "text": "Traffic Operation Coordination Center (TOCC)",
      "statementKind": "descriptive",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-6cba5bf489bd636f"
      ],
      "supportNote": "The transport commission's own organisational page is headed 北京市交通运行监测调度中心 and states the unit's short form as \"简称：TOCC\", confirming that a body called TOCC sits inside the Beijing Municipal Commission of Transport. The page also lists its four internal departments (\"综合保障部、指挥调度部、运行监测部、科技应用部\") and a direct telephone number, so it is describing an existing operating unit rather than a plan.",
      "caveat": "The authority's own name for the unit translates as the Traffic Operation Monitoring and Dispatch Center. \"Coordination Center\" is a widely used English rendering of the same TOCC acronym, but it is not the translation the commission itself publishes.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-426e7d2805ae7c0e",
      "field": "snippet",
      "text": "citywide congestion monitoring",
      "statementKind": "descriptive",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-6cba5bf489bd636f",
       "src-ecc20c5e30a0442e"
      ],
      "supportNote": "The first duty the commission lists for the unit is \"承担本市交通运行状况的监测、预测和预警工作\" — undertaking the monitoring, forecasting and early warning of traffic operating conditions for this municipality — which establishes a monitoring remit covering the whole city. The city government's English page adds the parent body's matching mandate: the commission is \"responsible for organizing and coordinating the comprehensive traffic governance in Beijing Municipality\".",
      "caveat": "Both pages describe monitoring of traffic operating conditions across the municipality in general terms. Neither names congestion as the object of the monitoring, and neither says what is measured or how often.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-c0784beedeaa6765",
      "field": "snippet",
      "text": "early warning",
      "statementKind": "descriptive",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-6cba5bf489bd636f"
      ],
      "supportNote": "Early warning is named directly in the unit's first listed duty: \"承担本市交通运行状况的监测、预测和预警工作\", where 预警 is the standard Chinese administrative term for early warning and 预测 for forecasting. The commission therefore assigns the TOCC a forecasting and warning function, not only an observing one.",
      "caveat": null,
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-c0339ad3cfec2d08",
      "field": "snippet",
      "text": "dispatch coordination",
      "statementKind": "descriptive",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-6cba5bf489bd636f"
      ],
      "supportNote": "Both halves of the phrase appear in the commission's duty list for the unit: \"交通运行组织协调\" (organisation and coordination of traffic operations) and \"承担交通运行调度的事务性工作\" (undertaking the administrative work of traffic operation dispatch). One of the unit's four internal departments is the 指挥调度部, the command and dispatch department.",
      "caveat": "The page assigns the dispatch role but does not describe how it is exercised, over which operators, or whether the centre issues instructions itself rather than supporting the bodies that do.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     }
    ],
    "sources": [
     {
      "id": "src-6cba5bf489bd636f",
      "title": "Beijing Municipal Transport Commission — TOCC (authority)",
      "url": "https://jtw.beijing.gov.cn/xxgk/jgzn/jgsz/yxjcddzx/",
      "publisher": {
       "name": null,
       "domain": "jtw.beijing.gov.cn",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
       "clm-006d0e4249d0158b",
       "clm-426e7d2805ae7c0e",
       "clm-c0784beedeaa6765",
       "clm-c0339ad3cfec2d08"
      ],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-17",
       "dossierCreatedAt": "2026-08-22",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Official department page for the Traffic Operation Monitoring & Dispatch Center.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-ecc20c5e30a0442e",
      "title": "Beijing Municipal Government (authority)",
      "url": "https://english.beijing.gov.cn/government/departments/202006/t20200627_1932944.html?v=jt",
      "publisher": {
       "name": null,
       "domain": "english.beijing.gov.cn",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
       "clm-426e7d2805ae7c0e"
      ],
      "temporal": {
       "publishedAt": "2020-06-27",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-17",
       "dossierCreatedAt": "2026-08-22",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Official page by the city or public authority behind the project.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-e2a35ff8322784b3",
      "title": "TransInfo Technology — TOCC solution (contractor)",
      "url": "https://global.ctfo.com/solution?id=7",
      "publisher": {
       "name": null,
       "domain": "global.ctfo.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-17",
       "dossierCreatedAt": "2026-08-22",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Contractor solution page for the TOCC platform.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     }
    ],
    "coverage": {
     "claimsTotal": 4,
     "claimsMapped": 4,
     "sourcesTotal": 3,
     "sourcesUsedByClaims": 2,
     "sourcesWithPublicationDate": 1,
     "sourcesWithArchive": 0,
     "sourcesWithExactLocator": 0,
     "sourcesWithContentHash": 0
    },
    "limits": [
     "Publisher names and source languages have not yet been classified; domains are recorded without guessing.",
     "Existing source notes are descriptive locators, not page- or paragraph-exact citations.",
     "A missing archive, publication date or content hash is shown as null rather than inferred.",
     "The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim."
    ]
   }
  }
 ]
}