{ "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": "dresden-open-data", "title": "Dresden Open Data Portal (opendata.dresden.de)", "canonicalUrl": "https://1001smartcities.org/projects/dresden-open-data/" }, "currentRevisionId": "2026-11-06-baseline", "revisions": [ { "id": "2026-11-06-baseline", "createdAt": "2026-11-06T06:46:03Z", "effectiveAt": "2026-11-06", "changeType": "baseline", "summary": "Created the first structured Evidence Passport with 14 claims and 6 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": "sha256:63b496466a0d44fca6a5555b626a64bdd4a62bc2503186b2f9c8c5bde1279839", "snapshot": { "asOf": "2026-11-06", "projectFingerprint": "sha256:d54846740065b3a9d593f04f7ea49fd8a4aa9fc01008b71ceecf67e68f734e4f", "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": 2019, "ended": null } }, "governance": { "operator": "Landeshauptstadt Dresden; the TU Dresden research project on the portal works with the city's Municipal Statistics Office", "actorTypes": [ "city-government", "research" ], "fundingModel": "public", "fundingDescription": "Run by the city administration; further development 2023–2026 within the federally funded Smart City Dresden model project.", "cost": "Open Data project 2023–2026: 1.1 million euros project budget", "ownership": null, "decisionRights": null, "exitConditions": null }, "claims": [ { "id": "clm-514bc60bd4bdc9d9", "field": "snippet", "text": "has run since 2019", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-2acd8c4dbf11806e", "src-150a60da4181bf8c" ], "supportNote": "Both city pages date the portal's launch to 2019.", "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-080fd6488579aaae", "field": "snippet", "text": "implementing a city council resolution of 3 September 2015", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-d1a9888d4c3512ea" ], "supportNote": "The city says the portal implements a city council resolution of 3 September 2015.", "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-b448956715931e4b", "field": "snippet", "text": "that asked for municipal data to be made available to citizens, businesses and start-ups", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-d1a9888d4c3512ea" ], "supportNote": "According to the city, the resolution provides for making municipal data available to interested citizens, businesses and start-ups.", "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-07eee34a51d657b7", "field": "snippet", "text": "more than 1,100 datasets can be used by anyone", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-d1a9888d4c3512ea" ], "supportNote": "The city states that more than 1,100 of its datasets can be freely used by anyone.", "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-c7705f0bb2eb986b", "field": "snippet", "text": "commercially too, provided the licence named on the portal is credited", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-d1a9888d4c3512ea" ], "supportNote": "The city says use is free of charge, commercial and non-commercial use are both allowed, and the condition is stating the licence terms named on the portal.", "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-2efd9a04870b6d9d", "field": "snippet", "text": "The national portal GovData lists 872 datasets under the publisher Stadt Dresden", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-96c11399f33f4cf8" ], "supportNote": "The GovData search for the publisher Stadt Dresden returned a count of 872 datasets on 6 November 2026; this is the set harvested through Saxony's portal, not necessarily the city's whole catalogue.", "caveat": "GovData lists fewer datasets than the city's own figure of more than 1,100; the two catalogues are not identical.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-14456093276aeae6", "field": "snippet", "text": "all but three carry the Datenlizenz Deutschland – Namensnennung 2.0", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-96c11399f33f4cf8" ], "supportNote": "In the API response every dataset's resources carry the licence http://dcat-ap.de/def/licenses/dl-by-de/2.0 except three, whose resources carry http://dcat-ap.de/def/licenses/other-closed. The licence string repeats across hundreds of records, so no unique locator exists; the result comes from reading every record of the response.", "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-9075c8693441ce6d", "field": "snippet", "text": "satellite images from 1965 and 1975 and a historical weather series, are marked closed", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-96c11399f33f4cf8" ], "supportNote": "The three closed-licence records are 'Satellitenbilder 1965', 'Satellitenbilder 1975' and daily weather data from Dresden-Klotzsche since 1934.", "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-7b4e9506433b3730", "field": "snippet", "text": "Since 2023 a 1.1 million euro project in the Smart City Dresden model programme", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-2acd8c4dbf11806e" ], "supportNote": "The project page gives the Open Data project a duration of 2023–2026 and a project budget of 1.1 million euros.", "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-da8f595d647e1524", "field": "snippet", "text": "adding a chatbot, an app portal and a feedback channel", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-2acd8c4dbf11806e" ], "supportNote": "The page describes three tools: a digital assistant with a feedback channel, an Open Data App Portal collecting applications built on the city's data, and an Open Data Chatbot.", "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-efe2d5d5da779685", "field": "lesson", "text": "A February 2025 comparison by the consultancy Finatycs placed Dresden third among the 20 largest German cities by number of datasets, behind Hamburg and Berlin", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-150a60da4181bf8c", "src-efc4826a0aa52288" ], "supportNote": "The city press release reports the Finatycs comparison of the 20 largest German cities: Hamburg 8,239 datasets, Berlin 3,171, Dresden 1,117; TU Dresden dates the analysis to February 2025.", "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-858fd27f38ddee7a", "field": "lesson", "text": "the EU project MAtchUP tracked the catalogue growing from 893 to 1028 open datasets during its monitoring", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-0fb4e40a3a194bb5" ], "supportNote": "The evaluation says there were 893 open datasets in the portal before MAtchUP and the number steadily rose to 1028 over the two-year monitoring period.", "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-ffa24c623de6ae70", "field": "lesson", "text": "its research partner TU Dresden found that enjoying working with data is a strong motivation for the people who use the portal", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-efc4826a0aa52288" ], "supportNote": "The university reports the survey result that enjoying working with data is a strong motivation for Dresden residents to use the portal.", "caveat": "The survey ran within the city's own model project, in cooperation with its Municipal Statistics Office.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-3f5addbd3a309244", "field": "lesson", "text": "The city's own next step was to fund use rather than volume", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-2acd8c4dbf11806e" ], "supportNote": "The project page says the aim is to better harness the benefits of open data and, beyond making data available, to actively promote it and facilitate its use.", "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-d1a9888d4c3512ea", "title": "Landeshauptstadt Dresden — Open Data (dresden.de)", "url": "https://www.dresden.de/de/leben/stadtportrait/statistik/open-data.php", "publisher": { "name": null, "domain": "dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-080fd6488579aaae", "clm-b448956715931e4b", "clm-07eee34a51d657b7", "clm-c7705f0bb2eb986b" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-11-06", "dossierCreatedAt": "2026-11-06", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "The city's page on open data: more than 1,100 datasets free for anyone to use, the portal implementing a city council resolution of 3 September 2015, machine-readable formats, commercial and non-commercial use allowed provided the licence named on the portal is credited.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-2acd8c4dbf11806e", "title": "Smart City Dresden — Open Data project page (2023–2026)", "url": "https://smartcity.dresden.de/en/projects/open-data", "publisher": { "name": null, "domain": "smartcity.dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-514bc60bd4bdc9d9", "clm-7b4e9506433b3730", "clm-da8f595d647e1524", "clm-3f5addbd3a309244" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-11-06", "dossierCreatedAt": "2026-11-06", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "The city's Smart City project page: the portal has run since 2019 as part of the urban platform; a 2023–2026 project with a 1.1 million euro budget adds a digital assistant and feedback channel, an Open Data App Portal and an Open Data Chatbot.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-150a60da4181bf8c", "title": "Smart City Dresden — Transparency through open data: Dresden comes third (21 Feb 2025)", "url": "https://smartcity.dresden.de/en/news/press-releases/transparency-through-open-data", "publisher": { "name": null, "domain": "smartcity.dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-514bc60bd4bdc9d9", "clm-efe2d5d5da779685" ], "temporal": { "publishedAt": "2025-02-21", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-11-06", "dossierCreatedAt": "2026-11-06", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "City press release on a comparison of the 20 largest German cities by the consultancy Finatycs, reported in Kommune21: Hamburg 8,239 datasets, Berlin 3,171, Dresden 1,117. It says the portal was launched in 2019 following a city council resolution.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-efc4826a0aa52288", "title": "TU Dresden — “Administrative data is fun”: research project on why people use the Dresden Open Data Portal (12 Sep 2025)", "url": "https://tu-dresden.de/bu/der-bereich/news/administrative-data-is-fun-tu-dresden-research-project-investigates-why-people-use-the-dresden-open-data-portal?set_language=en", "publisher": { "name": null, "domain": "tu-dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-efe2d5d5da779685", "clm-ffa24c623de6ae70" ], "temporal": { "publishedAt": "2025-09-12", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-11-06", "dossierCreatedAt": "2026-11-06", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "University news on a questionnaire-based survey of portal users and non-users, run within the Smart City model project with the Dresden Municipal Statistics Office: enjoying working with data is a strong motivation for users; transparency and awareness matter to non-users.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-96c11399f33f4cf8", "title": "GovData — CKAN API query: datasets with publisher Stadt Dresden (queried 6 Nov 2026)", "url": "https://ckan.govdata.de/api/3/action/package_search?fq=extras_publisher_name%3A%22Stadt%20Dresden%22&rows=1000", "publisher": { "name": null, "domain": "ckan.govdata.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-2efd9a04870b6d9d", "clm-14456093276aeae6", "clm-9075c8693441ce6d" ], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-11-06", "dossierCreatedAt": "2026-11-06", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "A live query of the national open data portal GovData for datasets whose publisher is Stadt Dresden (harvested via Saxony). On 6 November 2026 it returned 872 datasets; three carried a closed licence (Satellitenbilder 1965, Satellitenbilder 1975 and daily weather data from Dresden-Klotzsche since 1934), the rest the Datenlizenz Deutschland – Namensnennung 2.0.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-0fb4e40a3a194bb5", "title": "MAtchUP — D5.5 Technical evaluation (29 Sep 2023)", "url": "https://ec.europa.eu/research/participants/documents/downloadPublic?documentIds=080166e50220f07e&appId=PPGMS", "publisher": { "name": null, "domain": "ec.europa.eu", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-858fd27f38ddee7a" ], "temporal": { "publishedAt": "2023-09-29", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-11-06", "dossierCreatedAt": "2026-11-06", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "The MAtchUP consortium's technical evaluation. For Dresden it records 893 open datasets in the city's portal before the project and 1028 after the two-year monitoring period, and notes that the portal was in place before the evaluation's baseline.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } } ], "coverage": { "claimsTotal": 14, "claimsMapped": 14, "sourcesTotal": 6, "sourcesUsedByClaims": 6, "sourcesWithPublicationDate": 3, "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." ] } } ] }