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 “Inscribed Slab” — 64 records examined, 38 dropped by the rights gate.
Archives queried 2026-08-31 22:09 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Inscribed Slab
Artist not stated in the record · 6th–7th century
Frontispiece, with Dedication to Robert Adam, in Il Campo Marzio dell'Antica Roma
Giovanni Battista Piranesi, Italian, 1720–1778 · 1762
Slab
Artist not stated in the record · first half 8th century
Page Five from "Premier Livre De Differents morceaux A l'Usage de tous ceux qui s'appliquent aux beuax Arts Inventé Par G.M. Oppenort Architecte du Roy Et Gravé par Huquier," Serie A (Moyen Oppenord)
Gilles-Marie Oppenord, French, 1672–1742 · after 1751
Fragment of an Inscribed Slab
Artist not stated in the record · 6th–7th century
Fragment of an Inscribed Slab
Artist not stated in the record · 6th–7th century
Fragment of an Inscribed Slab
Artist not stated in the record · 6th–7th century
Fragment of an Inscribed Slab
Artist not stated in the record · 6th–7th century
Fragment of an Inscribed Slab with a Rosette
Artist not stated in the record · 6th–7th century
Fragments of an Inscribed Slab with a Rosette
Artist not stated in the record · 6th–7th century
Painted limestone funerary slab with a soldier standing at ease
Artist not stated in the record · 2nd half of 3rd century BCE
Painted limestone funerary slab with a man controlling a rearing horse
Artist not stated in the record · 2nd half of 3rd century BCE
Bodhisattva Avalokiteshvara in Water Moon Form (Shuiyue Guanyin)
Artist not stated in the record · dated 1385
Orthostat relief: lion-hunt scene
Artist not stated in the record · ca. 10th−9th century BCE
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. 60 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. 3141 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 2026-08-31 22:09 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.