OpenTwo archives, queried live.
Every record below comes from The Met or Smithsonian Open Access and was filtered on that archive’s own rights field before it reached this page. 24 shown for “Elevation of an altar retable for a project” — 64 records examined, 2 dropped by the rights gate.
Archives queried 2026-09-03 18:34 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Crucifixion
Master of the Berswordt Altar · ca. 1400
Elevation of an altar retable for a project
Artist not stated in the record · ca. 1570-1600
The Flagellation
Master of the Berswordt Altar · ca. 1400
The Elevation of an Altar Retable and The Plan for an Altar Retable
Artist not stated in the record · 1770–1800
Moses and Aaron before Pharaoh: An Allegory of the Dinteville Family
Master of the Dinteville Allegory · 1537
Project for the elevation of an altar
Artist not stated in the record · 1750–1780
Altar Predella and Socle of Archbishop Don Dalmau de Mur y Cervelló
Francí Gomar · ca. 1456–1458
Project for an altar of the Annunciation for S. Antonio dell'Ospedale in Anagni
Giuseppe Subleyras, Italian, 1745 – 1819 · 1780
Buddha Maitreya (Mile) Altarpiece
Artist not stated in the record · dated 524 (5th year of Zhengguang reign)
Design for the Elevation of an Altar
Artist not stated in the record · 1550–80
The Trinity Adored by All Saints
Spanish Painter
Project: the elevation of an altar, intended to be executed with colored marbles
Artist not stated in the record · 1770–1790
Retable with Scenes from the Life of Saint Andrew
Master of Roussillon · ca. 1420–30
Incomplete project for the elevation of an altar
Artist not stated in the record · 1740–1770
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
Elevation of Part of an Altar Retable, from "Architectura und Ausztheilung der V Seulen"
Wendel Dietterlinn the Elder, 1551 – 1599 · 1593–94
Battle between Christians and Muslims at El Sotillo
Francisco de Zurbarán · ca. 1637–39
Project: The elevation of an altar
Artist not stated in the record · 1575–1600
Young Man Holding a Book
Master of the View of Saint Gudula · ca. 1480
Design for an altar
Giuseppe Barberi, Italian, 1746–1809 · 1746-1809
The Annunciation
Gerard David · 1506
Design for Elevation of an Altar Retable
Gilles-Marie Oppenord, French, 1672–1742 · ca. 1700
The Miracle of the Palm Tree on the Flight to Egypt
Artist not stated in the record · ca. 1490–1510
Project for a cross-altar: intended to be executed primarily with colored marbles
Artist not stated in the record · 1700–1730
Where these records came from.
Two archives are wired, and only two. Each one is filtered on its own rights field — never on a title match, and never on the presence of an image file.
- The Met Collection API (Open Access)Rights field:
isPublicDomain. 189 matched · 24 examined · 2 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 4755597 matched · 40 examined · 0 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.12 shown
These figures describe the pass run at 2026-09-03 18:34 UTC, during this request. A completed pass is kept for 24 hours and replayed for an identical search, which is what keeps repeated queries inside Smithsonian’s 30-requests-per-hour allowance. A pass in which either archive failed to answer is never kept — an outage must not be replayed as though it were a finding about the catalogue.
Wikimedia Commons and the Library of Congress are deliberately not wired. Wikimedia was confirmed, on a live query, to return CC-BY material inside the same result set as genuine public domain works, and filtering it safely has not been designed yet. loc.gov was blocked by bot detection during the source evaluation, so its rights vocabulary has never been observed — and nothing here is built on a field nobody has read.
An image file is a rights claim. It never travels without its field.