{
 "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": "la-cool-pavement",
  "title": "Cool Pavement Programme",
  "canonicalUrl": "https://1001smartcities.org/projects/la-cool-pavement/"
 },
 "currentRevisionId": "2026-08-20-source-dates",
 "revisions": [
  {
   "id": "2026-08-20-source-dates",
   "createdAt": "2026-08-20T00:00:00Z",
   "effectiveAt": "2026-07-17",
   "changeType": "baseline",
   "summary": "Created the first structured Evidence Passport with 1 claim 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": "sha256:2d635b6e985af94ebd4c4aa0178e97e87f42270c594a5bbd973e860b8b19f582",
   "snapshot": {
    "asOf": "2026-07-17",
    "projectFingerprint": "sha256:77f6d88630f51784b599a0de7b4d564dee102b90554325d5114afc62c23814cf",
    "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": "peer-reviewed",
     "timeline": {
      "started": 2017,
      "ended": null
     }
    },
    "governance": {
     "operator": "StreetsLA (Bureau of Street Services)",
     "actorTypes": [
      "city-government"
     ],
     "fundingModel": "public",
     "fundingDescription": null,
     "cost": "~$40,000 per lane-mile (StreetsLA); FY2023 ~$4M from the Street Damage Restoration Fee",
     "ownership": null,
     "decisionRights": null,
     "exitConditions": null
    },
    "claims": [
     {
      "id": "clm-249719a9cb596719",
      "field": "impact",
      "text": "A peer-reviewed study (Ko et al. 2022) confirmed real daytime cooling but flagged increased reflected sunlight on pedestrians at street level.",
      "statementKind": "quantitative",
      "textMode": "verbatim-from-project-record",
      "mappingStatus": "mapped",
      "sourceRefs": [
       "src-1c03ba15a6804665"
      ],
      "supportNote": "The lesson repeats the finding: reflective pavement measurably lowers air and surface temperature but bounces more sunlight onto people at street level.",
      "caveat": null,
      "interpretation": {
       "added": false,
       "interpolation": false,
       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
      }
     }
    ],
    "sources": [
     {
      "id": "src-626064c869fe3928",
      "title": "StreetsLA / Bureau of Street Services — What We Do (authority)",
      "url": "http://lastreets.lacity.org/what-we-do",
      "publisher": {
       "name": null,
       "domain": "lastreets.lacity.org",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": null,
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-17",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "record-date-only"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Official StreetsLA description of the Cool Pavement programme and heat strategy.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-224850f5dfc85d56",
      "title": "Smart Cities Dive — Results of the LA cool pavement experiment (press)",
      "url": "https://www.smartcitiesdive.com/news/los-anageles-cool-reflective-pavement-study-results-pacoima-extreme-heat/714420/",
      "publisher": {
       "name": null,
       "domain": "smartcitiesdive.com",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "background",
      "claimRefs": [],
      "temporal": {
       "publishedAt": "2024-04-26",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-17",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Pacoima study: up to 3.5°F cooler air in extreme heat; 175 lane-miles / 600 segments by 2023.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     },
     {
      "id": "src-1c03ba15a6804665",
      "title": "Ko et al. 2022, Environmental Research Letters (peer-reviewed)",
      "url": "https://iopscience.iop.org/article/10.1088/1748-9326/ac58a8",
      "publisher": {
       "name": null,
       "domain": "iopscience.iop.org",
       "classification": "not-classified"
      },
      "sourceType": "web-page",
      "language": "und",
      "role": "claim-evidence",
      "claimRefs": [
       "clm-249719a9cb596719"
      ],
      "temporal": {
       "publishedAt": "2022-03-18",
       "updatedAt": null,
       "sourceCheckedAt": null,
       "recordLastVerifiedAt": "2026-07-17",
       "dossierCreatedAt": "2026-08-20",
       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Neighbourhood-scale albedo/temperature measurement; documents daytime cooling and pedestrian-radiation tradeoff.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": "https://web.archive.org/web/20260731092203/https://iopscience.iop.org/article/10.1088/1748-9326/ac58a8",
       "archivedAt": "2026-07-31",
       "contentHash": null,
       "status": "archive-linked"
      }
     }
    ],
    "coverage": {
     "claimsTotal": 1,
     "claimsMapped": 1,
     "sourcesTotal": 3,
     "sourcesUsedByClaims": 1,
     "sourcesWithPublicationDate": 2,
     "sourcesWithArchive": 1,
     "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."
    ]
   }
  }
 ]
}