{ "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-bridge-monitoring", "title": "Carolabrücke and Budapester Straße: Acoustic Monitoring of Dresden's Prestressed Bridges", "canonicalUrl": "https://1001smartcities.org/projects/dresden-bridge-monitoring/" }, "currentRevisionId": "2026-11-06-baseline", "revisions": [ { "id": "2026-11-06-baseline", "createdAt": "2026-11-06T06:46:07Z", "effectiveAt": "2026-11-06", "changeType": "baseline", "summary": "Created the first structured Evidence Passport with 20 claims and 7 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:d315bbc37a5a9576717923844058b17f787c1333273e72413f0b1e45ad6a31a0", "snapshot": { "asOf": "2026-11-06", "projectFingerprint": "sha256:e196ddcd4ae82e08f0b40664f08052fd90cbdb2281c1fc97e7ede1a1090403a0", "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": 2024, "ended": null } }, "governance": { "operator": "Landeshauptstadt Dresden (Straßen- und Tiefbauamt), with commissioned engineering consultants evaluating the signals", "actorTypes": [ "city-government", "private" ], "fundingModel": "public", "fundingDescription": null, "cost": "Load test on the Budapester Straße bridge: about €900,000; the cost of the monitoring itself is not published", "ownership": null, "decisionRights": null, "exitConditions": null }, "claims": [ { "id": "clm-351a2543e179cebb", "field": "snippet", "text": "collapsed in the early hours of 11 September 2024", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-b44ec8652d3ffed5" ], "supportNote": "The summary places the failure of the cross-beam connection, and with it the collapse of section C, in the early hours of 11 September 2024.", "caveat": "The expert summary was written by MKP GmbH, the engineering firm the city also commissioned to install and run the monitoring on the Budapester Straße bridge.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-7c44e1c91bf1a52e", "field": "snippet", "text": "the bridge was inspected to the standards in force", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-b44ec8652d3ffed5" ], "supportNote": "The expert summary states that bridge inspections were carried out regularly according to the applicable standards.", "caveat": "This is the finding of the expert team the city commissioned; the public prosecutor's separate review is not covered here. The expert summary was written by MKP GmbH, the engineering firm the city also commissioned to install and run the monitoring on the Budapester Straße bridge.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-2f168fa09279c981", "field": "snippet", "text": "existing cracks were monitored by crack-movement measurement", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-b44ec8652d3ffed5" ], "supportNote": "The summary says the cracks then linked to stress corrosion were monitored by crack-movement measurement, but were attributed at the time to increased creep of the superstructure.", "caveat": "The expert summary was written by MKP GmbH, the engineering firm the city also commissioned to install and run the monitoring on the Budapester Straße bridge.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-bda0f6578eb700a7", "field": "snippet", "text": "hydrogen-induced stress corrosion cracking had begun during construction", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-b44ec8652d3ffed5" ], "supportNote": "The summary names hydrogen-induced stress corrosion cracking as the main cause and says the corrosion damage arose during the construction phase.", "caveat": "These were the interim findings presented in December 2024. The expert summary was written by MKP GmbH, the engineering firm the city also commissioned to install and run the monitoring on the Budapester Straße bridge.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-15b4cbfda6d0a9ad", "field": "snippet", "text": "the design meant failure would not announce itself through wide cracks", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-b44ec8652d3ffed5" ], "supportNote": "The summary says structural particularities meant the hoped-for warning of failure through pronounced cracking could not occur.", "caveat": "The expert summary was written by MKP GmbH, the engineering firm the city also commissioned to install and run the monitoring on the Budapester Straße bridge.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-592e4ffe821fe1cb", "field": "snippet", "text": "sensors that pick up the sound of a prestressing wire snapping", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-b44ec8652d3ffed5" ], "supportNote": "The summary describes the system as recording, in real time, the acoustic signals produced by prestressing steel breaking.", "caveat": "The expert summary was written by MKP GmbH, the engineering firm the city also commissioned to install and run the monitoring on the Budapester Straße bridge.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-a1b4e26d517ac610", "field": "snippet", "text": "The expert summary made it the condition for reopening the Elbe to ships under the remaining sections", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-b44ec8652d3ffed5" ], "supportNote": "The summary states that the waterway can only be temporarily reopened to shipping with acoustic emission monitoring installed and at least four weeks of prior measurement on sections A and B.", "caveat": "The expert summary was written by MKP GmbH, the engineering firm the city also commissioned to install and run the monitoring on the Budapester Straße bridge.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-06f65480e05fce88", "field": "snippet", "text": "built with prestressing steel prone to stress corrosion cracking", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4057cc586c245167", "src-e130e8d8fa7f9587" ], "supportNote": "The city states the monitoring was installed because the bridge uses prestressing steel at risk of stress corrosion cracking; the trade press adds that it comes from the former Hennigsdorf steelworks, like the Carolabrücke's.", "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-ea2c4c7c234cad99", "field": "snippet", "text": "122 acoustic emission sensors and about 850 metres of fibre-optic sensing listen for wire breaks and cracks", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4057cc586c245167" ], "supportNote": "The city gives 122 acoustic emission sensors and around 850 metres of fibre-optic sensing that register possible wire breaks and cracking.", "caveat": "The same release says the system was installed a year earlier; the city's January 2026 release and the trade press date the acoustic sensors to autumn 2024.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-02de066f8ff90d2d", "field": "impact", "text": "the monitoring recorded several wire breaks from 16 February 2025", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-ececeec460084654" ], "supportNote": "The city states that from Sunday 16 February 2025 the acoustic emission monitoring installed on the bridge recorded several wire breaks.", "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-f0946ec195500582", "field": "impact", "text": "citing acute risk of collapse, the city waived a tender and awarded the demolition directly", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-ececeec460084654" ], "supportNote": "The city says the acute risk of collapse allowed it to dispense with a tender and award the demolition directly.", "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-66b71969bda4932c", "field": "impact", "text": "ship-by-ship passages were permitted again from 24 February 2025 because no further breaks were recorded", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-ececeec460084654" ], "supportNote": "The city says that because the consultancy had recorded no further wire breaks, individually approved ship passages could be granted again from Monday 24 February 2025.", "caveat": "Passages were limited to weekday time windows and required registration with the federal waterways office.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-36851c930f77bde5", "field": "impact", "text": "the monitoring flagged suspect areas; opened up, two places showed embrittled prestressing steel", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-4057cc586c245167" ], "supportNote": "The city says the permanent monitoring had identified suspect areas; targeted openings and steel samples found the typical damage pattern of embrittled prestressing steel at two places.", "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-a0f064239c8ab225", "field": "impact", "text": "On 8 May 2026 the city cut traffic to one lane each way and a 7.5-tonne limit", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-e130e8d8fa7f9587" ], "supportNote": "The report says Dresden responded on 8 May with traffic restrictions: one lane per direction remained and permissible weight was limited to 7.5 t.", "caveat": "Scheduled buses and coaches remained exempt from the weight limit, according to the city.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-7c814894475d0d8b", "field": "impact", "text": "Six more wires snapped at axis C after the closure", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-ff101a91e0402d12" ], "supportNote": "The city reports that since the closure six more prestressing wires had broken at axis C alone, as recorded by the acoustic emission monitoring.", "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-56bea6c7baaf9ba5", "field": "impact", "text": "emergency steel props went in", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-ff101a91e0402d12", "src-a8f80b877c56ea1f" ], "supportNote": "The June release describes four heavy-duty steel props as emergency support; the August release says the additional props were installed and work as intended.", "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-f22dc786c2235b66", "field": "impact", "text": "After a load test the bridge reopened on 24 August 2026 to buses and vehicles up to 7.5 tonnes, one lane each way and still without heavy traffic", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-a8f80b877c56ea1f" ], "supportNote": "The city announces reopening from 24 August 2026 for buses and vehicles up to 7.5 tonnes, on one lane per direction, still without heavy goods traffic, after the load test.", "caveat": "The city calls the load capacity sufficient in the medium term under the safety measures; its overall assessment was expected in November 2026.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } }, { "id": "clm-960d80491327c58c", "field": "lesson", "text": "a reserve of at most 16 wire breaks within three metres", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-ff101a91e0402d12" ], "supportNote": "The city states that the experts' critical limit is a reserve of at most 16 wire breaks within a three-metre zone.", "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-8f73bd040c97a9b9", "field": "lesson", "text": "the city expects the damage to the wires to continue", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-a8f80b877c56ea1f" ], "supportNote": "The city says it must be assumed that the damage process in the prestressing wires will continue.", "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-5b4443b146b87fbd", "field": "lesson", "text": "the monitoring buys time to plan a replacement", "statementKind": "descriptive", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-ff101a91e0402d12", "src-a8f80b877c56ea1f" ], "supportNote": "The city says the aim is to keep the bridge for at least ten more years and use that time to prepare an orderly replacement; in August it said the results give time to agree the goals for a new build.", "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-b44ec8652d3ffed5", "title": "MKP GmbH — Vorläufige Erkenntnisse zur Ursache und Hergang des Teileinsturzes der Carolabrücke (expert summary, 11 Dec 2024)", "url": "https://www.dresden.de/media/pdf/presseamt/2024_12_11_Carolabruecke_Zusammenfassung-Ergebnisse.pdf", "publisher": { "name": null, "domain": "dresden.de", "classification": "not-classified" }, "sourceType": "pdf", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-351a2543e179cebb", "clm-7c44e1c91bf1a52e", "clm-2f168fa09279c981", "clm-bda0f6578eb700a7", "clm-15b4cbfda6d0a9ad", "clm-592e4ffe821fe1cb", "clm-a1b4e26d517ac610" ], "temporal": { "publishedAt": "2024-12-11", "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": "Two-page summary of the interim findings of the expert team led by Prof. Steffen Marx, on the MKP GmbH letterhead, published by the city: hydrogen-induced stress corrosion cracking initiated during construction as the main cause; the pre-collapse inspection regime, including crack-movement measurement of existing cracks; and acoustic emission monitoring with at least four weeks of prior measurement as the condition for reopening the waterway.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-ececeec460084654", "title": "Landeshauptstadt Dresden — Carolabrücke: Stadt beauftragt Hentschke Bau mit Abbruch (25 Feb 2025)", "url": "https://www.dresden.de/de/rathaus/aktuelles/pressemitteilungen/02/pm_057.php", "publisher": { "name": null, "domain": "dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-02de066f8ff90d2d", "clm-f0946ec195500582", "clm-66b71969bda4932c" ], "temporal": { "publishedAt": "2025-02-25", "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: since 16 February 2025 the acoustic emission monitoring on the bridge recorded several wire breaks; citing acute risk of collapse, the city waived a tender and awarded the demolition directly; because no further breaks were recorded, ship-by-ship passages could be permitted again from 24 February 2025.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-4057cc586c245167", "title": "Landeshauptstadt Dresden — Brücke Budapester Straße: Ab sofort Verkehrs- und Tonnagebeschränkung (8 May 2026)", "url": "https://www.dresden.de/de/rathaus/aktuelles/pressemitteilungen/2026/05/pm_030.php", "publisher": { "name": null, "domain": "dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-06f65480e05fce88", "clm-ea2c4c7c234cad99", "clm-36851c930f77bde5" ], "temporal": { "publishedAt": "2026-05-08", "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: the permanent monitoring of the Budapester Straße bridge had flagged suspect areas; opened up, two places showed embrittled prestressing steel; 122 acoustic emission sensors and about 850 metres of fibre-optic sensing cover the structure, which was built with prestressing steel prone to stress corrosion cracking; the city aims to keep the bridge in service for ten more years.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-ff101a91e0402d12", "title": "Landeshauptstadt Dresden — Brücke Budapester Straße: Tiefbauarbeiten für „Not-Notunterstützung“ laufen (11 Jun 2026)", "url": "https://www.dresden.de/de/rathaus/aktuelles/pressemitteilungen/2026/06/pm_035.php", "publisher": { "name": null, "domain": "dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-7c814894475d0d8b", "clm-56bea6c7baaf9ba5", "clm-960d80491327c58c", "clm-5b4443b146b87fbd" ], "temporal": { "publishedAt": "2026-06-11", "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: since the closure six more wires had snapped at axis C; the experts' critical limit is a reserve of at most 16 wire breaks within a three-metre zone; four heavy-duty steel props were being built as emergency support.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-e130e8d8fa7f9587", "title": "ingenieur.de — 326-t-Stresstest entscheidet über Schicksal der Budapester Brücke in Dresden", "url": "https://www.ingenieur.de/technik/fachbereiche/bau/326-t-stresstest-entscheidet-ueber-schicksal-der-budapester-bruecke-in-dresden/", "publisher": { "name": null, "domain": "ingenieur.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-06f65480e05fce88", "clm-a0f064239c8ab225" ], "temporal": { "publishedAt": "2026-08-09", "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": "Trade-press report ahead of the load test: the 1967 bridge contains prestressing steel from the former Hennigsdorf steelworks, similar to the Carolabrücke's; monitored since autumn 2024; on 8 May the city cut traffic to one lane each way and a 7.5-tonne limit; the load test with up to 326 t costs about €900,000.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-a8f80b877c56ea1f", "title": "Landeshauptstadt Dresden — Brücke Budapester Straße ab Montag, 24. August, wieder offen (19 Aug 2026)", "url": "https://www.dresden.de/de/rathaus/aktuelles/pressemitteilungen/2026/08/pm_045.php", "publisher": { "name": null, "domain": "dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-56bea6c7baaf9ba5", "clm-f22dc786c2235b66", "clm-8f73bd040c97a9b9", "clm-5b4443b146b87fbd" ], "temporal": { "publishedAt": "2026-08-19", "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: after the load test the bridge reopens on 24 August 2026 to buses and vehicles up to 7.5 tonnes, one lane each way, still without heavy traffic; the city expects the damage to the wires to continue and an overall assessment in November 2026.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-366e5dd689e0c07c", "title": "Landeshauptstadt Dresden — Verkehrseinschränkungen an Brücke Budapester Straße und Nossener Brücke (3 Dec 2024)", "url": "https://www.dresden.de/de/rathaus/aktuelles/pressemitteilungen/2024/12/pm_005.php", "publisher": { "name": null, "domain": "dresden.de", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2024-12-03", "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 notice on lane closures for fitting the monitoring system to the Budapester Straße bridge, continuing installation work from November 2024. It names Marx Krontal Partner (Dresden/Weimar) as the firm commissioned to install and operate the monitoring system.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } } ], "coverage": { "claimsTotal": 20, "claimsMapped": 20, "sourcesTotal": 7, "sourcesUsedByClaims": 6, "sourcesWithPublicationDate": 7, "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." ] } } ] }