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. 19 shown for “Matthaeus Greuter” — 49 records examined, 4 dropped by the rights gate.
Archives queried 2026-09-03 07:46 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Sancta Francisca de Pontainis Dicta Romana
Matthaeus Greuter · 1608
Matthaeus Keller, Phat Macopaeus
Artist not stated in the record
Tomb and Medals of Pope Sixtus V
Matthaeus Greuter · 1630
Callosciurus caniceps
Artist not stated in the record · 11 Dec 1900
Allegory of Leopold V, Archduke of Austria
Matthaeus Greuter · mid 16th–mid 17th century
Allegory of a Cardinal
Matthaeus Greuter · mid 16th–mid 17th century
Designs for Rocaille Ornament
J. Matthaeus Schmahl, German, active 18th century · mid- 18th century
Horse Racing in a Roman Hippodrome
Matthaeus Greuter · mid-16th–mid-17th century
Designs for Rocaille Ornament
J. Matthaeus Schmahl, German, active 18th century · mid- 18th century
Allegory of the Twelve Labors of Hercules Statues in a Circular Garden
Matthaeus Greuter · mid 16th–mid 17th century
Spring, from "The Four Seasons"
Matthaeus Greuter · 1589–1600
Callosciurus caniceps
Artist not stated in the record · 24 Dec 1903
Christ presented to the people by Pilate, standing atop stairs at left with a crowd at right
Matthaeus Greuter · 1586
Leopoldamys sabanus
Artist not stated in the record · 18 Jan 1900
Basilica di S. Pietro in Vaticano (spine title)
Giovanni Battista Costaguti the Elder · 1620–84
Designs for Rocaille Ornament
J. Matthaeus Schmahl, German, active 18th century · mid- 18th century
Designs for Rocaille Ornament
J. Matthaeus Schmahl, German, active 18th century · ca. 1719 – 1768
Dianthus pulviniformis Greuter
Artist not stated in the record · 2 Nov 1966
Dittrichia graveolens (L.) Greuter
Artist not stated in the record · 23 Oct 1972
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. 9 matched · 9 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.9 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 1612 matched · 40 examined · 4 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 07:46 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.