{ "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": "singapore-steps-challenge-healthhub", "title": "National Steps Challenge & HealthHub Digital Health", "canonicalUrl": "https://1001smartcities.org/projects/singapore-steps-challenge-healthhub/" }, "currentRevisionId": "2026-08-26-claim-mapping", "revisions": [ { "id": "2026-08-20-source-dates", "createdAt": "2026-08-20T19:29:52Z", "effectiveAt": "2026-07-25", "changeType": "baseline", "summary": "Created the first structured Evidence Passport with 1 claim and 4 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": "sha256:7531dcff65ce2cdabffc5e7838b9fc722b8ac6600d8d5f244a39f5ce642609be", "snapshot": { "asOf": "2026-07-25", "projectFingerprint": "sha256:82b685df066cdc97657de94f6b798bdb92c7572406b04b2c35252fae9dc2b6c2", "assurance": { "status": "unreviewed", "scope": "evidence-passport-revision", "statement": "AI-assisted structural preparation. 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"The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-c1861a2277919a0d", "field": "snippet", "text": "Since September 2023 the programme has been folded into the national Healthier SG preventive-health strategy, with eligible Healthy 365 users auto-enrolled", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-61b5b076fa450294" ], "supportNote": "The report covers the 2023 reward change and the shift into Healthier SG, with the Healthy 365 app carrying it.", "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-509b529ef1c64937", "field": "impact", "text": "A peer-reviewed evaluation of one 2017-18 season, covering 696,907 registered adults, found mean daily step count rising by 1,579 steps (95% CI 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"added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-9ff4d41bb6b1b428", "field": "lesson", "text": "once the challenge phase ended, the increase fell to 934", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-05657061a285fea9" ], "supportNote": "The maintenance-phase increase reported by the study is 934 steps.", "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-05657061a285fea9", "title": "Journal of the American Heart Association (peer-reviewed): 'Evaluation of a Population-Wide Mobile Health Physical Activity Program in 696 907 Adults in Singapore', 2022 (PMC mirror)", "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC9238668/", 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"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." ] } } ] }