Two 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 “Project for an Altar” — 64 records examined, 3 dropped by the rights gate.
Archives queried 2026-08-28 05:46 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Project for an Altar
Anonymous, Italian, 17th century · 17th century

Project for an altar
Artist not stated in the record · 1775–1780

The Crucifixion
Master of the Berswordt Altar · ca. 1400

Project for an altar
Artist not stated in the record · 1775–1780

The Flagellation
Master of the Berswordt Altar · ca. 1400

Project for an Altar with Angels and Pediment
Artist not stated in the record · late 18th century
Altar coffer
Artist not stated in the record · 17th–18th century

Project for an Altar
Artist not stated in the record · 1750–1775

Altar
Artist not stated in the record · ca. 232

Project for an Altar
Artist not stated in the record · 1725–1750

Altar Tusk
Ìgbèsànmwà (ivory- and wood- carving guild) artists · 1888–97

Project for an altar: intended to be executed with colored marble and gilded bronze
Artist not stated in the record · 1780–1800

Evening: Landscape with an Aqueduct
Théodore Géricault · 1818

Project for an Altar
Artist not stated in the record · 1750–1800

Court official from a commemorative altar
Ìgùn Ẹ́rọ̀nwwọ̀n (brass-casting guild) artists · 16th–17th century

Project for an Altar
Artist not stated in the record · 1625–50

Model for an altar
Artist not stated in the record · ca. 1700–1730

Project for an Altar
Artist not stated in the record · 1700–1750

Altar Tusk
Ìgbèsànmwà (ivory- and wood- carving guild) artists · ca. 1712–50

Project for an altar with alternative suggestions
Artist not stated in the record · 1775–1780

Altar candlestick
Andrea di Alessandri, called Il Bresciano · ca. 1565

Project for an Altar
Artist not stated in the record · 1750–1775

Moses and Aaron before Pharaoh: An Allegory of the Dinteville Family
Master of the Dinteville Allegory · 1537

Project for an Altar
Artist not stated in the record · 1750–1775
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. 2726 matched · 24 examined · 3 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. 1070879 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 2026-08-28 05:46 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.