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 “Base of an Altar Cross with Reading Angels Sitting on Dragons and Standing Church Fathers” — 64 records examined, 1 dropped by the rights gate.
Archives queried 2026-09-03 19:41 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Base of an Altar Cross with Reading Angels Sitting on Dragons and Standing Church Fathers
Artist not stated in the record · ca. 1125–50
Design for an Altar Tablet
Luigi Righetti, Italian, 1780 - 1819 · ca. 1820
The Crucifixion
Master of the Berswordt Altar · ca. 1400
Three Designs for Altar Candlesticks for a Jesuit Church
Pietro Belli, Italian, 1780–1828 · early 19th century
The Cloisters Cross
Artist not stated in the record · ca. 1150–60
Project for an altar with alternative suggestions
Artist not stated in the record · 1725–1750
The Flagellation
Master of the Berswordt Altar · ca. 1400
Design of Main Altar
Giuseppe Barberi, Italian, 1746–1809 · 1746-1809
Madonna and Child Enthroned with Two Angels
Fra Filippo Lippi · ca. 1440
Design for an altar of the Virgin
Carlo Marchionni, Italian, 1702–1786 · 1775–80
Annunciation Triptych (Merode Altarpiece)
Robert Campin · ca. 1427–32
Design for a Main Altar
Giuseppe Barberi, Italian, 1746–1809 · 1746-1809
Plaque with the Pentecost
Artist not stated in the record · ca. 1150–75
Project for an altar
Artist not stated in the record · mid- 18th century
The Crucifixion; The Last Judgment
Jan van Eyck · ca. 1436–38
Drawing
Leonardo Scaglia, French, active Italy, 1640 – 1650 · 1620-1630
Virgin and Child with Saints Catherine of Alexandria and Barbara
Hans Memling · early 1480s
Two Designs for Altar Cross Bases; verso, Designs for Five Projects
Luzio Romano, Italian, active 1528 – 1575 · 1530–40
The Annunciation
Gerard David · 1506
Macchina delle 40 ore
Artist not stated in the record · 1685–1700
The Meditation on the Passion
Vittore Carpaccio · ca. 1490
Design for a Main Altar
Giuseppe Barberi, Italian, 1746–1809 · 1746-1809
The Creation of the World and the Expulsion from Paradise
Giovanni di Paolo (Giovanni di Paolo di Grazia) · 1445
Cross section of church of S. Tommaso da Villanova
Artist not stated in the record · ca. 1655–67
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. 125 matched · 24 examined · 0 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. 3339297 matched · 40 examined · 1 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 19:41 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.