{
 "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": "dubai-metro",
  "title": "Dubai Metro",
  "canonicalUrl": "https://1001smartcities.org/projects/dubai-metro/"
 },
 "currentRevisionId": "2026-08-27-claims-and-sources",
 "revisions": [
  {
   "id": "2026-08-27-claims-and-sources",
   "createdAt": "2026-08-27T02:45:42Z",
   "effectiveAt": "2026-08-27",
   "changeType": "baseline",
   "summary": "Created the first structured Evidence Passport with 7 claims and 5 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:c0e5e596a84d47f2c752f6169504141fb969b3ff11d193d8c7c6e82307bde9c3",
   "snapshot": {
    "asOf": "2026-08-27",
    "projectFingerprint": "sha256:0433123b9012bf0314e2eac0aba5eb2c5bfa890d925f4e937fe98ccc72f50429",
    "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": "succeeded",
     "evidenceGrade": "official",
     "timeline": {
      "started": 2009,
      "ended": null
     }
    },
    "governance": {
     "operator": "Roads and Transport Authority (RTA), Dubai",
     "actorTypes": [
      "utility"
     ],
     "fundingModel": "public",
     "fundingDescription": null,
     "cost": null,
     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
    "claims": [
     {
      "id": "clm-a7b9d161f6ba2e08",
      "field": "snippet",
      "text": "Dubai Metro opened on 9 September 2009 and was for years the world's longest driverless metro (Guinness, 2012)",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-5f828724135045ad",
       "src-e65e6b4588d2196e"
      ],
      "supportNote": "The RTA statement marking fifteen years dates the opening to 9 September 2009 and carries the Guinness recognition; Gulf News reports the same anniversary figures.",
      "caveat": "A commercial record-keeper's award, not an engineering standard, and superseded since.",
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
      "id": "clm-af303b5ae4441479",
      "field": "snippet",
      "text": "Its two GoA4 fully automated lines, Red and Green, run 89.6 km with 53 stations and no onboard drivers, controlled from a central operations centre",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-5f828724135045ad",
       "src-9772bf15ac115018"
      ],
      "supportNote": "The RTA anniversary statement gives the network length and station count for the Red and Green lines; Railway Gazette describes the network as driverless and automated.",
      "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-662afa3e01e77440",
      "field": "snippet",
      "text": "A 30 km Blue Line is under construction, due by 2029",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-9772bf15ac115018"
      ],
      "supportNote": "Railway Gazette, 28 November 2023, on the formal launch of the Blue Line: a 30 km automated metro scheme.",
      "caveat": null,
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     },
     {
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      "field": "impact",
      "text": "The Red and Green lines carried 275.4 million riders in 2024, up about 6% on 2023's 260.0 million (RTA annual ridership release, February 2025)",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-19561bd88112f4d9",
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      ],
      "supportNote": "RTA's annual ridership release for 2024 breaks out the metro figure; the September 2024 anniversary statement carries the same 275.4 million.",
      "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-6a61a5c5e280490c",
      "field": "impact",
      "text": "RTA's February 2026 release puts 2025 at 294.7 million (+7%)",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
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      ],
      "supportNote": "RTA's annual ridership release of 15 February 2026: the Red and Green lines carried 294.7 million riders in 2025, a 7% increase on 2024.",
      "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-6e12cdc56c0b58df",
      "field": "impact",
      "text": "Cumulative ridership since 2009 exceeds 2.4 billion, and the 99.7% punctuality RTA cites is a lifetime operations figure, not an annual metric",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
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      "supportNote": "The fifteen-year statement gives 2.4 billion riders since 2009 and 99.7% punctuality across the same period; Gulf News reports both in the same frame.",
      "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-f513a30356021723",
      "field": "lesson",
      "text": "those 294.7 million rides are roughly one in three of the 802.1 million RTA counted across all its public transport, shared mobility and taxi services in 2025",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
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      ],
      "supportNote": "The February 2026 release gives 802.1 million riders in 2025 across public transport, shared mobility and taxis, against 747.1 million in 2024, with the metro's 294.7 million inside that total.",
      "caveat": null,
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     }
    ],
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     {
      "id": "src-5f828724135045ad",
      "title": "Dubai Media Office / RTA (authority)",
      "url": "https://www.mediaoffice.ae/en/news/2024/september/08-09/dubai-metro-marks-15-years-of-transforming-urban-mass-transit",
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      "language": "und",
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      ],
      "temporal": {
       "publishedAt": "2024-09-08",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-08-27",
       "dossierCreatedAt": "2026-08-29",
       "retrievedAt": null,
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      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "RTA statement marking 15 years: 2.4bn riders, 275.4m in 2024, 99.7% punctuality.",
       "exact": false
      },
      "preservation": {
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       "contentHash": null,
       "status": "not-captured"
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     },
     {
      "id": "src-e65e6b4588d2196e",
      "title": "Gulf News (press)",
      "url": "https://gulfnews.com/uae/transport/dubai-metro-transports-24-billion-passengers-with-997-punctuality-sheikh-mohammed-aims-for-100-1.104043059",
      "publisher": {
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      "locator": {
       "type": "descriptive-source-note",
       "value": "Established-press coverage of ridership and punctuality figures.",
       "exact": false
      },
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     },
     {
      "id": "src-9772bf15ac115018",
      "title": "Railway Gazette (trade)",
      "url": "https://www.railwaygazette.com/metro/dubai-blue-line-automated-metro-scheme-formally-launched/65414.article",
      "publisher": {
       "name": null,
       "domain": "railwaygazette.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
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      "temporal": {
       "publishedAt": "2023-11-28",
       "updatedAt": null,
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       "recordLastVerifiedAt": "2026-08-27",
       "dossierCreatedAt": "2026-08-29",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Trade coverage confirming automated/driverless operation and the 30 km Blue Line extension.",
       "exact": false
      },
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       "contentHash": null,
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      }
     },
     {
      "id": "src-19561bd88112f4d9",
      "title": "Dubai Media Office — RTA 2024 ridership (authority)",
      "url": "https://www.mediaoffice.ae/en/news/2025/february/02-02/747-million-riders-used-public-transport",
      "publisher": {
       "name": null,
       "domain": "mediaoffice.ae",
       "classification": "not-classified"
      },
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      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
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      ],
      "temporal": {
       "publishedAt": "2025-02-02",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-08-27",
       "dossierCreatedAt": "2026-08-29",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
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      "locator": {
       "type": "descriptive-source-note",
       "value": "RTA annual ridership release for 2024: 747.1 million riders across public transport, shared mobility and taxis, with the metro share broken out.",
       "exact": false
      },
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     },
     {
      "id": "src-e1cf0af97608ca0e",
      "title": "Dubai Media Office — RTA 2025 ridership: 802 million riders across public transport, shared mobility and taxis (15 February 2026)",
      "url": "https://www.mediaoffice.ae/en/news/2026/february/15-02/rta-records-802-riders-in-dubai-2025",
      "publisher": {
       "name": null,
       "domain": "mediaoffice.ae",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
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       "clm-f513a30356021723"
      ],
      "temporal": {
       "publishedAt": "2026-02-15",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-08-27",
       "dossierCreatedAt": "2026-08-29",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "RTA annual ridership release for 2025, the carrying source for the 294.7 million metro figure: the Red and Green lines carried 294.7 million riders in 2025, up 7% on 2024, within a total of 802.1 million riders across public transport, shared mobility and taxis, against 747.1 million in 2024. Average daily ridership 2.2 million. BurJuman (17.8 million) and Al Rigga (13.8 million) were the busiest stations.",
       "exact": false
      },
      "preservation": {
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       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     }
    ],
    "coverage": {
     "claimsTotal": 7,
     "claimsMapped": 7,
     "sourcesTotal": 5,
     "sourcesUsedByClaims": 5,
     "sourcesWithPublicationDate": 5,
     "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."
    ]
   }
  }
 ]
}