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. 12 shown for “Johannes I. Mayr” — 24 records examined, 1 dropped by the rights gate.
Archives queried 2026-08-30 16:06 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.Smithsonian Open Access: HTTP 429 from api.si.edu. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.
Sanctuary lamp
Johannes I. Mayr · 1670–73
Astrolabe
Regiomontanus · 1462
Young Woman with a Water Pitcher
Johannes Vermeer · ca. 1662
A Maid Asleep
Johannes Vermeer · ca. 1656–57
Allegory of the Catholic Faith
Johannes Vermeer · ca. 1670–72
Young Woman with a Lute
Johannes Vermeer · ca. 1662–63
Study of a Young Woman
Johannes Vermeer · ca. 1665–67
Suggestion for the Decoration of Lower Right and Top Right of an Altar Frame, plate 1 from an Untitled Series with Rocailles Ornaments for Altar and Door Frames
Wolffgang Christoph Mayr · printed ca. 1750–56
Suggestion for the Decoration of Lower Right and Top Right of an Altar Frame, plate 4 from an Untitled Series with Rocailles Ornaments for Altar and Door Frames
Wolffgang Christoph Mayr · printed ca. 1750–56
Suggestion for the Decoration of Lower Right and Top Right of an Altar Frame, plate 3 from an Untitled Series with Rocailles Ornaments for Altar and Door Frames
Wolffgang Christoph Mayr · printed ca. 1750–56
Suggestion for the Decoration of Lower Right and Top Right of an Altar Frame, plate 2 from an Untitled Series with Rocailles Ornaments for Altar and Door Frames
Wolffgang Christoph Mayr · printed ca. 1750–56
Plaque with Christ Receiving Magdeburg Cathedral from Emperor Otto I
Artist not stated in the record · ca. 962–968
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. 826 matched · 24 examined · 1 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. HTTP 429 from api.si.edu. No records from this archive are shown for this query.Unavailable
These figures describe the pass run at 2026-08-30 16:06 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.