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. 21 shown for “Pieter Aertsen” — 49 records examined, 13 dropped by the rights gate.
Archives queried 2026-09-01 13:27 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Raguel's Reception of Tobias at Ecbatana
Pieter Aertsen · 1520–75
Portrait of Pieter Brughel the Younger
Marco Sadeler · 1606
Market Scene in City with the Parable of the Laborers in the Vineyard in the Background
Jacob Matham · 1603
Portrait of Pieter Brueghel the Younger, from the Icones Principum Virorum
Artist not stated in the record · ca. 1636
Fish Market
Joachim Beuckelaer · 1568
Portrait of Louis van Boisot
Artist not stated in the record · ca. 1760
Adoration of the Shepherds
Joachim Beuckelaer · 1560
Philip II
Pieter Van Gunst, c. 1667 - 1724 · n.d.a.
Market Scene, the Rest on the Flight into Egypt in the Background, from Kitchen and Market Scenes with Biblical Scenes in the Background
Jacob Matham · 1603
William II
Pieter Tanje, 1706 - 1760 · 1749
Kitchen Scene
Peter Wtewael · 1620s
Henry Frederick
Pieter Tanje, 1706 - 1760 · 1749
A Kitchen
Hendrick Sorgh · ca. 1643
E. Tow O Koam Coning van de Rivier Volkeren
Pieter Schenk, 1660 - 1711 · 1710
Execution of the Five Kings of the Amorites
Joachim Beuckelaer · 1533–74
Sa Ga Yean Qua Rash Tow, Coning Vande Maquas alias Coning Brant
Pieter Schenk, 1660 - 1711 · 1710
The Calling of Saint Matthew
Jan Sanders van Hemessen · early 17th century
Chara papillosa
Artist not stated in the record · 1898
Chara hydropithys Reichenbach
Artist not stated in the record · 1898
Sida spinosa L.
Artist not stated in the record · 17 Aug 1899 to 18 Aug 1899
Nitella acuminata var. subglomerata
Artist not stated in the record · 1898
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. 1455 matched · 40 examined · 13 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 13:27 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.