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. 14 shown for “Solidus of Heraclius and Heraclius Constantine” — 55 records examined, 38 dropped by the rights gate.
Archives queried 2026-09-03 13:39 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Solidus of Heraclius and Heraclius Constantine
Artist not stated in the record · 629–631
1 Solidus, Byzantine Empire, 659 - 668
Constans II Emperor of Byzantium · 659 - 668
Solidus of Heraclius, Heraclius Constantine, and Heraclonas
Artist not stated in the record · 638–641
1 Solidus, Byzantine Empire, 668 - 680
Constantine IV Emperor of Byzantium · 668 - 680
Solidus of Heraclius
Artist not stated in the record · ca. 610–41 CE
Plate with the Battle of David and Goliath
Artist not stated in the record · 629–30
Plate with Monogram
Artist not stated in the record · 610–613
Study for Emperor Heraclius Carrying the Cross into Jerusalem
Gregorio de' Ferrari · 1647–1726
Gold solidus of Constantine I
Artist not stated in the record · 313–315 CE
Gold Solidus of Constantine II
Artist not stated in the record · 337–361
Medal Obverse: Equestrian Portrait of Emperor Constantine (r. 307–337) Reverse: Allegory of Salvation
Artist not stated in the record · ca. 1402–13 (model); 16th century (cast)
Plate with the Arming of David
Artist not stated in the record · 629–630
Plate with the Presentation of David to Saul
Artist not stated in the record · 629–630
Plate with David Anointed by Samuel
Artist not stated in the record · 629–630
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. 15 matched · 15 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. 3105758 matched · 40 examined · 38 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.2 shown
These figures describe the pass run at 2026-09-03 13:39 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.