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 “Francesco Piranesi, Italian, about 1756 - 1810” — 42 records examined, 0 dropped by the rights gate.
Archives queried 2026-09-01 11:30 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
The Adoration of the Magi
Joos van Wassenhove · 1472–74
Carceri Series, Plate XV
Giovanni Battista Piranesi, Italian, 1720–1778 · 1745
Johann Joachim Winckelmann (1717–1768)
Anton Raphael Mengs · ca. 1777
Pope Pius VI (1775-1799)
Francesco Piranesi, Italian, about 1756 - 1810 · 1782
Title page, "Il Campo Marzio dell'Antica Roma," from part 20 of "The Complete Works of Giovanni Battista Piranesi"
Giovanni Battista Piranesi, Italian, 1720–1778 · 1800
Ruins of the Mausoleum of Octavian Augustus, "Le Antichita Romane" II, 1756
Giovanni Battista Piranesi, Italian, 1720–1778 · 1756
Plate IV, vol. II of "Le Antichita Romane"
Giovanni Battista Piranesi, Italian, 1720–1778 · 1756
Plate V, vol. II of "Le Antichità Romane"
Artist not stated in the record · 1756
The Drawing Academy of Francesco Rosaspina
Artist not stated in the record · 1811
Salvator Mundi, with a Globe and a Cross
Artist not stated in the record · ca. 1760–1770
Two Boys
Artist not stated in the record · ca. 1769–1770
Boys Playing with a Bird
Artist not stated in the record · ca. 1760–1770
Plate V, vol. II of "Le Antichita Romane"
Giovanni Battista Piranesi, Italian, 1720–1778 · 1756
Side Wall Elevation of the Riding Academy, Vienna
Artist not stated in the record · 1740–44
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. 2 matched · 2 examined · 0 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.2 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 113448 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 2026-09-01 11:30 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.