{ "dataset_version": "0.9", "dataset_date": "2026-08-12", "licence": { "metadata": "CC0 1.0 Universal (Public Domain Dedication)", "spdx": "CC0-1.0", "url": "https://creativecommons.org/publicdomain/zero/1.0/", "note": "Descriptive metadata and the census are dedicated to the public domain. Reuse them for anything, including commercially, without asking and without attribution — though a citation helps other people find the source. Written prose on the site is CC BY 4.0. Comparator photographs belong to the institutions that made them and carry the terms stated on each comparator record." }, "type": "changelog", "count": 5, "by_type": { "addition": 1, "correction": 2, "new_evidence": 1, "release": 1 }, "versions": [ { "version": "0.9", "date": "2026-08-12", "status": "released", "doi": null, "summary": "First public dossier. Circulated for expert review before any DOI deposit. It documents what the project knows, what it has checked, and — at greater length — what it does not know. No claim in it should be cited as settled." }, { "version": "1.0", "date": "", "status": "planned", "doi": null, "summary": "The first citable release, deposited with a DOI. It is gated on evidence, not on a date: it will not be deposited until the items below are done, because a DOI makes a version permanent and citable, and a permanent citation of an unchecked record is worse than no citation at all." } ], "records": [ { "id": "CH-001", "date": "2026-08-12", "type": "release", "summary": "Record published at version 0.9", "detail": "The object receives the identifier NP-RMB-001 and a public record. Every field is published with its evidence and a confidence state. The record is opened for correction from the first day rather than after a period of private polishing.", "affected": [ "np-rmb-001" ], "reason": "A record that is not public cannot be corrected by anyone who knows better.", "credited_to": null, "reviewed_by": null, "dossier_version": "0.9" }, { "id": "CH-002", "date": "2026-08-12", "type": "correction", "summary": "Working record's dimensions flagged as internally inconsistent", "detail": "The owner's working record gives the sheet as approximately 137 × 104 mm and simultaneously describes it as roughly trimmed at the left margin. The Rijksmuseum records its impression of this composition (RP-P-1961-989) at 134 × 103 mm. A trimmed sheet being larger than the recorded dimensions of an untrimmed institutional impression is not impossible — sheets can carry margins beyond the plate mark — but the working record does not state whether its figure is the plate or the sheet, and the two readings cannot both be right. The dimension claim has been lowered to 'possible' and remeasurement placed on the version 1.0 gate list.", "affected": [ "CL-DIMENSIONS", "RQ-03" ], "reason": "A measurement whose convention is unstated is not a measurement. Publishing it at high confidence would propagate an error into any record that cites us.", "credited_to": null, "reviewed_by": null, "dossier_version": "0.9" }, { "id": "CH-003", "date": "2026-08-12", "type": "correction", "summary": "Working record's description 'without signature' contradicted by an institutional record", "detail": "The working record describes the impression as 'state III of IV, without signature'. The Rijksmuseum's record for its impression of this composition states the inscription 'Rembrandt f. 1638'. The project has not seen a source establishing that any state of this plate lacks the signature. Either the working record is describing something else by 'without signature', or it is in error. The state claim has been lowered to 'possible' and opened as RQ-01 rather than corrected in place, because the project does not yet know which reading is right.", "affected": [ "CL-STATE", "RQ-01" ], "reason": "Where the project's own record and an institutional record disagree, the disagreement is published rather than resolved by assumption in the owner's favour.", "credited_to": null, "reviewed_by": null, "dossier_version": "0.9" }, { "id": "CH-004", "date": "2026-08-12", "type": "new_evidence", "summary": "Four-state division for New Hollstein 170 corroborated by two independent sources", "detail": "The Rijksmuseum records its impression as New Hollstein 170-1(4), and a Bonhams catalogue entry of December 2022 describes a different impression as 'New Hollstein's second state (of four)'. Two independent sources agreeing on a four-state division supports the working record's 'of IV'. What remains unverified is this sheet's position within that division.", "affected": [ "CL-STATE", "RQ-02" ], "reason": "Corroboration from independent sources raises confidence in the framework even while the specific claim within it stays open.", "credited_to": null, "reviewed_by": null, "dossier_version": "0.9" }, { "id": "CH-005", "date": "2026-08-12", "type": "addition", "summary": "Acquisition lot not located in public auction archives — recorded as a negative finding", "detail": "A systematic search of the auction house's public archive and the main aggregators did not locate the 2023 New York lot described in the working record. The search path, including which archives gate their results and how deeply each was reachable, is published under RQ-08 so that nobody repeats it. The purchase itself is not in doubt: it is documented by invoice. What is missing is the public catalogue entry.", "affected": [ "RQ-08", "PV-004" ], "reason": "A documented negative saves the next researcher the same hours, and marks the point where a single private document would settle the question.", "credited_to": null, "reviewed_by": null, "dossier_version": "0.9" } ] }