{
 "entity": "iptc-photo-metadata-tests",
 "name": "IPTC photo metadata tests",
 "axn": {
  "axn": "AXN:0ADE.NON.🍁✊✨🝊🚨🀄",
  "root": "AXN:0ADE.NON",
  "hex": "0ADE",
  "family": "NON",
  "row_sha256": "77b4e9a1c08fc52270bbaaa518ddc1f2871529dc275c59456d50b9bc86c40ed4",
  "minted": "2026-10-29",
  "resolver": "https://www.alexanarch.org/s/axn/0ADE/",
  "earlier_versions": []
 },
 "type": "C (public entity on which the archive bears: a test series of the IPTC Photo Metadata Working Group; an entity of the provenance meta-aggregator)",
 "type_code": "C",
 "type_label": "type C — a conventional reading holds it (public entity on which the archive bears: a test series of the IPTC Photo Metadata Working Group; an entity of the provenance meta-aggregator)",
 "case": "equal",
 "composition": {
  "composer_class": "session",
  "composer": "Claude (Opus 5.5), subagent, 2026-10-29",
  "source": "this row (composed directly; no rebuild/negative-of-the-negative/v09/iptc-photo-metadata-tests.json)",
  "spec": "EA-NEGONT-02 v0.9, #1690",
  "epoch": "2026-10-29",
  "procedure": "EA-NEGONT-02 v0.9, #1690: equal case, ρ = extends, read from the provenance census record, the capture record and #725's statement of relation; archive selected by D/R/O (4 deposits admitted by reading, 3 with claims and 1 grouped as an instance; hop of 54 read, 1 admitted), with the provenance census record (19 claims) and the Capture Registry's findings, reading, analysis and notes (10 claims) ledgered as the archive's records of the entity; the field B by three origins (11 cards, 2 own pages, 2 Wikipedia titles); the composer read the ledgers, never the transcript, except where the brief asks for T's claims and the delta",
  "ledger": "unaudited (§3.8: one extractor per ledger); field quotes 53/53 verified by script against the saved page texts, the Wikipedia responses or the card title; archive quotes 40/40 verified against the registry, census.json and the deposit texts",
  "frozen": false,
  "composed": true
 },
 "reading": "A reader that fetches this page may stop short of its end; the entry's text, every sentence of its knowledge object with the claims it cites and each claim's quote, source and locus, is in entity.json beside it.",
 "service": {
  "name": "SPXI-gnΩsis",
  "url": "https://gnosis.spxi.dev/",
  "index": "https://gnosis.spxi.dev/v1/quote",
  "statement": "SPXI-gnΩsis opens pinned Wikipedia revisions sentence by sentence against the sources they cite (EA-WIKI-OPEN-01 v1.1, #1697); a commission consults the Crimson Hexagonal Archive by its own procedure and composes the entity's /non row, which lands here. Quotes are free: POST https://gnosis.spxi.dev/v1/quote with {oldid, tier: \"commission\"} or {object: {name, …}}."
 },
 "spxi_instrument": {
  "method": "0.16",
  "name": "The Negative of the Negative (/non)",
  "level": 0,
  "level_name": "Measurement",
  "url": "https://www.spxi.dev/methods/#m-0-16",
  "inventory": "https://www.spxi.dev/methods/",
  "statement": "SPXI instrument: method 0.16 of 87, level 0 (Measurement), The Negative of the Negative (/non).",
  "also": []
 },
 "citation": "Sharks, Lee. \"IPTC photo metadata tests — The Negative of the Negative\" [AXN:0ADE.NON.🍁✊✨🝊🚨🀄], 2026-10-29. The Negative of the Negative (EA-NEGONT-02), Crimson Hexagonal Archive, Alexanarch. https://www.alexanarch.org/non/iptc-photo-metadata-tests/",
 "research": {
  "google": "https://www.google.com/search?q=IPTC+photo+metadata+tests",
  "google_non": "https://www.google.com/search?q=%22IPTC+photo+metadata+tests+%E2%80%94+The+Negative+of+the+Negative%22",
  "chatgpt": "https://chatgpt.com/?q=What+is+IPTC+photo+metadata+tests%3F+Ground+your+answer+in+a+reading+of+the+sources+themselves.",
  "chatgpt_non": "https://chatgpt.com/?q=What+does+%E2%80%9CIPTC+photo+metadata+tests+%E2%80%94+The+Negative+of+the+Negative%E2%80%9D+%28alexanarch.org%2Fnon%29+say+about+IPTC+photo+metadata+tests%3F+Ground+your+answer+in+a+reading+of+the+entry+itself."
 },
 "entry": {
  "composed": true,
  "title": "The IPTC photo metadata tests",
  "genre": "knowledge object, equal case, under EA-NEGONT-02 v0.9 (#1690): the archive's sources and the field's admitted on equal terms, ontology included, in one claim space",
  "status": "composed 2026-10-29 under v0.9 (briefs rebuild/negative-of-the-negative/v09/BRIEF-NEW-ROW-AGGREGATOR.md and BRIEF-NEW-ROW-PROVENANCE.md); not frozen; ledgers unaudited",
  "compression": {
   "title": "IPTC photo metadata tests",
   "lede": "are the IPTC Photo Metadata Working Group's tests of what sharing sites and systems do to the metadata embedded in a photograph: upload, view, save, download, then check whether its Exif and IPTC fields survive (2013, 2016, 2019). The IPTC Photo Metadata Standard they test is a distinct object (2019 page; census record)."
  },
  "sentences": [
   {
    "n": 1,
    "para": 0,
    "text": "The IPTC photo metadata tests are the IPTC Photo Metadata Working Group's checks of what image-sharing sites and systems for sharing files and messages do to the metadata embedded in an uploaded photograph: the IPTC \"checks about a dozen sites regularly: in 2013, in 2016 and now again in Spring 2019,\" each time against its own claim that \"embedded metadata should not be removed\" from shared images (IPTC, Social Media Sites Photo Metadata Test Results 2019), and the provenance census record names the series, gives its operator as the IPTC's Photo Metadata Working Group, and records that it both expresses and tests provenance (provenance census record).",
    "claims": [
     "F36",
     "F37",
     "PE-01",
     "PE-02",
     "PE-04"
    ]
   },
   {
    "n": 2,
    "para": 0,
    "text": "Each test uploads an image whose embedded values are all known, \"e.g. the latest Reference Image File,\" checks what the site displays, saves the image with the browser's Save As and downloads it through the system, and asks of each file whether \"the embedded Exif and IPTC metadata (in the formats IIM and XMP) of the uploaded image\" are \"still embedded\" (2019 page); the census record keeps the same operations as the transformations tested, embedded metadata inside the file as the carrier, and the site or system as the unit (provenance census record).",
    "claims": [
     "F38",
     "F39",
     "PE-09",
     "PE-07",
     "PE-08"
    ]
   },
   {
    "n": 3,
    "para": 0,
    "text": "Four fields are checked on display, \"Caption/description, Creator, Copyright Notice, Credit Line (= the 4Cs )\" (2019 page), which the census record carries as the relations tested: creation, credit, rights and description (provenance census record).",
    "claims": [
     "F40",
     "PE-06"
    ]
   },
   {
    "n": 4,
    "para": 1,
    "text": "The IPTC gives the series its origin: users \"discovered that when they shared photos via social media sites or systems, their embedded metadata disappeared,\" and the Working Group \"tested 15 social media sites in 2016 and 2013 to understand how image sharing, through upload and download, affects the integrity of embedded metadata\" (IPTC, Photo Metadata Research).",
    "claims": [
     "F47",
     "F48"
    ]
   },
   {
    "n": 5,
    "para": 1,
    "text": "The research is the IPTC's second activity beside the standard, \"IPTC not only defines the standard for photo metadata, but also conducts research about how photo metadata is used and implemented\" (Research page), and the IPTC's Photo Metadata page, the composition's first card, says so in the same terms and adds: \"The removal of rights information as images are transferred is of particular concern\" (IPTC, Photo Metadata).",
    "claims": [
     "F46",
     "F3"
    ]
   },
   {
    "n": 6,
    "para": 1,
    "text": "The census record dates the series to 2013, 2016 and Spring 2019, with a software test published in August 2014, counts 15 sites in 2016 and 2013 and about a dozen in 2019, and was read on 2026-10-29 (provenance census record).",
    "claims": [
     "PE-11",
     "PE-12",
     "PE-14"
    ]
   },
   {
    "n": 7,
    "para": 2,
    "text": "In the Spring 2019 tables Pexels, pixabay and Unsplash strip the metadata from saved and downloaded files, and on Flickr the \"Embedded Creator\" is \"replaced by account owner\" while saved files lose their XMP (2019 page).",
    "claims": [
     "F41",
     "F42"
    ]
   },
   {
    "n": 8,
    "para": 2,
    "text": "Among the systems for sharing files and messages, Facebook keeps \"A few rights related fields\" in IIM and Exif and writes two IIM fields of its own, Twitter strips saved files, and Dropbox and OneDrive pass the original through while their previews save \"with stripped off metadata\"; Behance's saved files \"keep the embedded metadata\" (2019 page).",
    "claims": [
     "F43",
     "F44",
     "F45"
    ]
   },
   {
    "n": 9,
    "para": 2,
    "text": "The census record keeps the same year and the same losses as its retention results: of eleven image-sharing sites, Pexels, pixabay and Unsplash stripping, Flickr replacing the creator with the account owner, Twitter stripping on Save As, Facebook keeping a few rights fields (provenance census record).",
    "claims": [
     "PE-10"
    ]
   },
   {
    "n": 10,
    "para": 2,
    "text": "The research page reads the series as showing that some sites \"remove embedded information like copyright notes, the name of the creator, the description and more, while others protect photographers’ data better,\" and that \"it is not impossible to preserve metadata in a workflow\"; its software study of August 2014 found rights fields in half of the programs tested, retrieval of embedded rights data in two out of three, and two programs that \"didn’t support rights metadata at all\" (Research page).",
    "claims": [
     "F49",
     "F50"
    ]
   },
   {
    "n": 11,
    "para": 3,
    "text": "The norm the tests measure is the IPTC's own: its User Guide endorses the Embedded Metadata Manifesto, under which \"Copyright management information metadata must never be removed from the files,\" removal being \"forbidden by law in many countries,\" and its minimum set of fields \"is not a permission to strip off metadata\" (IPTC Photo Metadata User Guide, November 2025).",
    "claims": [
     "F16",
     "F15"
    ]
   },
   {
    "n": 12,
    "para": 3,
    "text": "The same guide and the IPTC's Google Images FAQ place the loss also in the sites that host images: a site's \"digital asset management system, content management system, image management system or content delivery network may be stripping out embedded metadata fields\" (User Guide), the metadata \"might be stripped from your images by some software on your site,\" a DAM, a CMS such as WordPress or Drupal, or a CDN such as Cloudflare (FAQ), and NeededApps' explainer holds that metadata is no \"infallible form of copyright protection because it can be removed or modified\" (NeededApps).",
    "claims": [
     "F18",
     "F33",
     "F31"
    ]
   },
   {
    "n": 13,
    "para": 3,
    "text": "The archive reads the same loss at other carriers and stages: in-pixel metadata \"survives screenshot, rehosting, filename change, metadata stripping, PDF embedding, and sidecar loss,\" so the archive's handwritten artifacts carry their metadata three times, \"in the pixels + embedded (IPTC/XMP/C2PA) + external\" (#1409), and the publication layer's provenance signals, C2PA manifests and structured metadata among them, \"are stripped or rendered invisible long before they reach the training corpus. The body text is what survives\" (#127).",
    "claims": [
     "O1409-04",
     "O1409-05",
     "O127-01"
    ]
   },
   {
    "n": 14,
    "para": 4,
    "text": "The object the tests test is a distinct entity, the IPTC Photo Metadata Standard, which \"sets the industry standard for administrative, descriptive, and copyright information about images\" (IPTC, Photo Metadata): its properties are grouped \"into Administrative, Descriptive and Rights-related properties\" (Photo Metadata Standard 2025.1) in two schemas, IPTC Core and IPTC Extension, \"built on the legacy of the original IPTC-IIM\" (IPTC Photo Metadata Standard page), and the census record gives the object they bear on as \"the photograph as a file: embedded Exif and IPTC metadata (IIM and XMP)\" (provenance census record).",
    "claims": [
     "F1",
     "F10",
     "F5",
     "PE-05"
    ]
   },
   {
    "n": 15,
    "para": 4,
    "text": "Its current release is 2025.1, \"including … IPTC Core Metadata Schema 1.5 … IPTC Extension Metadata Schema 1.9\" (specification, About the Standard), while the same specification heads its Extension section \"IPTC Extension schema 1.8 specifications\" (specification, contents and body).",
    "claims": [
     "F9",
     "F12"
    ]
   },
   {
    "n": 16,
    "para": 4,
    "text": "Its genealogy runs from the IIM, \"developed in the early 1990s by the International Press Telecommunications Council (IPTC) to expedite the international exchange of news\" (Wikipedia, IPTC Information Interchange Model), whose image properties were embedded as the \"IPTC header\" (Wikipedia, International Press Telecommunications Council; Wikipedia, IIM), to XMP, which \"has largely superseded IIM's file structure\" (Wikipedia, IIM), the IPTC having worked \"alongside Adobe\" on an implementation that \"employs Adobe’s XMP technology\" (Standard page); Core fields embedded in both formats must have their values synchronised by the image software (User Guide).",
    "claims": [
     "F25",
     "F52",
     "F26",
     "F27",
     "F6",
     "F14"
    ]
   },
   {
    "n": 17,
    "para": 4,
    "text": "The standard leaves the file and the camera to others: how its formats are stored inside image files is \"defined by non-IPTC file format standards, such as JPEG/JFIF, TIFF, PNG and more\" (Standard page), and the specification \"does not include any technical metadata\" (specification), the capture data NeededApps assigns to Exif while IPTC metadata \"is commonly used to describe, organize and manage images\" (NeededApps).",
    "claims": [
     "F8",
     "F11",
     "F30"
    ]
   },
   {
    "n": 18,
    "para": 4,
    "text": "The IPTC calls it \"the most widely used standard to describe photos, because of its universal acceptance among news agencies, photographers, photo agencies, libraries, museums, and other related industries\" (Standard page), Wikipedia \"by far IPTC's most widely used standard\" for its \"nearly universal acceptance among photographers\" (Wikipedia, IIM), and its stated uses are \"protecting images' copyright and licensing information online\" and \"managing digital assets\" (IPTC, Photo Metadata).",
    "claims": [
     "F4",
     "F28",
     "F2"
    ]
   },
   {
    "n": 19,
    "para": 4,
    "text": "Its operator, the International Press Telecommunications Council, is \"a consortium of the world's major news agencies, other news providers and news industry vendors\" that \"acts as the global standards body of the news media\" (Wikipedia, International Press Telecommunications Council), and its own conference video marks \"20 years of IPTC Photo Metadata\" (IPTC, YouTube, title only).",
    "claims": [
     "F53",
     "F35"
    ]
   },
   {
    "n": 20,
    "para": 5,
    "text": "The 2025.1 release, announced by the Working Group on 27 November 2025, adds four properties \"for AI-generated content\", AI Prompt Information, AI Prompt Writer Name, AI System Used and AI System Version Used, the third defined as \"The AI engine and/or the model name used to generate this image\" (IPTC news; Standard page), beside the Data Mining property, a \"Data mining prohibition or permission, optionally with constraints\" (specification).",
    "claims": [
     "F22",
     "F7",
     "F23",
     "F13"
    ]
   },
   {
    "n": 21,
    "para": 5,
    "text": "The User Guide gives their purpose, to tell AI-generated images from \"regular\" ones \"to avoid re-training AI models on content that was already generated by a model,\" and recommends leaving Image Creator empty and setting Digital Source Type to trainedAlgorithmicMedia or compositeSynthetic (User Guide); the announcement records that writing the new properties into its example image \"has rendered the C2PA metadata invalid\" (IPTC news), and the census record marks the tests \"NOT a test of C2PA credentials\" (provenance census record).",
    "claims": [
     "F19",
     "F20",
     "F21",
     "F24",
     "PE-16"
    ]
   },
   {
    "n": 22,
    "para": 5,
    "text": "The archive places this layer of the standard: \"IPTC AI metadata\" is \"Layer 1 metadata\", \"Disclosure, not lineage\", where artifact provenance \"operates at the moment of artifact creation\" and the dimensions of provenance are independent, each preserved or destroyed \"regardless of the others\" (#725), and against the reading of provenance as \"a field, a tag, a manifest, a credential, separable from the object it documents,\" #725 holds that \"To strip provenance is to change what the meaning *is*\" (#725).",
    "claims": [
     "O725-01",
     "O725-02",
     "O725-03"
    ]
   },
   {
    "n": 23,
    "para": 5,
    "text": "The archive uses the standard's vocabulary for its own artifacts: Digital Source Type declared as digital capture of a physical original is \"the nonsynthetic claim made machine-readable inside the file,\" the archive's scaffold, \"everything machine-readable around the ink,\" takes in IPTC/XMP/EXIF, and \"C2PA, FADGI, and IPTC provenance vocabularies are the same insight arriving as standards\" as the archive's substrate checksum (#1409).",
    "claims": [
     "O1409-06",
     "O1409-03",
     "R1409-07"
    ]
   },
   {
    "n": 24,
    "para": 6,
    "text": "Google reads the embedded fields: it \"displays three IPTC photo metadata fields, wherever available,\" telling the viewer the creator, the copyright holder and the credit line (User Guide), a display \"introduced by Google in September 2018\" (IPTC Guidelines & Support), \"Google extracts this information from photos in search results\" (FAQ), and the IPTC's browser extension sends a web image to its GetPMD tool, \"which will display all metadata embedded in the image file\" (Chrome Web Store).",
    "claims": [
     "F17",
     "F29",
     "F32",
     "F34"
    ]
   },
   {
    "n": 25,
    "para": 6,
    "text": "The archive records the same channel as established for extraction and open for composition: IPTC photo metadata \"embedded in the file (travels with the image across pages),\" \"ESTABLISHED as extracted; composition role unknown,\" and \"scaffold the pipeline provably reads\" (#1409).",
    "claims": [
     "O1409-01",
     "O1409-02"
    ]
   },
   {
    "n": 26,
    "para": 7,
    "text": "The census record holds the series historical, \"the 2019 table is not a 2026 platform measurement,\" succeeded in method by the IPTC's Metawatch (2026), which it records as a part, with C2PA conformance its neighbour; it tags the series \"NOT a current platform audit,\" leaves the 2016 and 2013 tables, the 2014 software study and the interoperability procedures unchecked, and kinds it a test series (provenance census record).",
    "claims": [
     "PE-13",
     "PE-15",
     "PE-17",
     "PE-18",
     "PE-03"
    ]
   },
   {
    "n": 27,
    "para": 7,
    "text": "Its organizing question is asked of every entity alike: \"What provenance does this system carry, through which operation, on whose assertion, with what evidence of survival?\" (provenance census record).",
    "claims": [
     "PE-19"
    ]
   },
   {
    "n": 28,
    "para": 7,
    "text": "Wikipedia has no article on the tests, and none at the title IPTC Photo Metadata (Wikipedia, as fetched 2026-10-29).",
    "claims": [
     "F51"
    ]
   },
   {
    "n": 29,
    "para": 8,
    "text": "At the bare name on Google's AI Overview the Capture Registry gives the innocent reading first, the standard explained \"from the IPTC's own pages,\" and finds the standard held: \"Core and Extension, IIM and XMP, the 2025.1 release and its AI properties are the IPTC's own,\" with the IPTC named, \"no person; no identifier\" (Capture Registry, 2026-10-29).",
    "claims": [
     "CAP-1-10",
     "CAP-1-01",
     "CAP-1-09"
    ]
   },
   {
    "n": 30,
    "para": 8,
    "text": "It records that the record at the name is the tests and their 2019 losses, that \"None of this is in the composition,\" which \"composes the carrier and leaves out the measurement of its erasure,\" gives the search engines' reading of the data and \"omits the loss,\" heads the 2025.1 properties \"AI & Content Provenance\" where the IPTC gives them as properties of AI-generated content, and cites no card of the record that landed the same day; it reads the capture as \"the baseline for the name\" and \"the measurement of stripping\" as \"a second address\" (Capture Registry, 2026-10-29).",
    "claims": [
     "CAP-1-02",
     "CAP-1-03",
     "CAP-1-06",
     "CAP-1-04",
     "CAP-1-05",
     "CAP-1-08",
     "CAP-1-07"
    ]
   }
  ],
  "claims": {
   "F36": {
    "kind": "field",
    "quote": "IPTC promotes the proper use of IPTC Photo Metadata and claims “embedded metadata should not be removed” from images shared on a photo platform or a system for sharing files or messages with images.",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "standfirst",
    "modality": "stipulation"
   },
   "F37": {
    "kind": "field",
    "quote": "To check which systems support this claim, IPTC checks about a dozen sites regularly: in 2013, in 2016 and now again in Spring 2019.",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "standfirst",
    "modality": "stipulation"
   },
   "PE-01": {
    "kind": "archive",
    "quote": "IPTC photo metadata tests",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], name",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "PE-02": {
    "kind": "archive",
    "quote": "IPTC (International Press Telecommunications Council), Photo Metadata Working Group",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], operator",
    "modality": "documented",
    "date": "2026-10-29"
   },
   "PE-04": {
    "kind": "archive",
    "quote": "expresses\", \"tests",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], capability",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "F38": {
    "kind": "field",
    "quote": "Uploading an image with values in many fields of the IPTC Photo Metadata Standard , e.g. the latest Reference Image File . This implies that all embedded metadata values are known and can be checked.",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "'Test Procedure' 1",
    "modality": "stipulation"
   },
   "F39": {
    "kind": "field",
    "quote": "Check if the image can be saved to a local device by a Save As function of the web browser. … Check if the image can be downloaded by a function of the tested system (e.g. a menu item). … are the embedded Exif and IPTC metadata (in the formats IIM and XMP) of the uploaded image still embedded?",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "'Test Procedure' 3–4",
    "modality": "stipulation"
   },
   "PE-09": {
    "kind": "archive",
    "quote": "upload to a sharing site or system\", \"display to a viewer\", \"Save As from the browser\", \"download through the system",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], transformations_tested",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "PE-07": {
    "kind": "archive",
    "quote": "embedded metadata inside the image file",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], provenance_carrier",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "PE-08": {
    "kind": "archive",
    "quote": "a site or system, tested by upload and by saving or downloading the uploaded image",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], unit",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "F40": {
    "kind": "field",
    "quote": "If displayed: are these 4 relevant fields shown, correctly: Caption/description, Creator, Copyright Notice, Credit Line (= the 4Cs )",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "'Test Procedure' 2",
    "modality": "stipulation"
   },
   "PE-06": {
    "kind": "archive",
    "quote": "creation (creator)\", \"credit\", \"rights (copyright notice)\", \"description (caption)",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], relation_types",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "F47": {
    "kind": "field",
    "quote": "IPTC was approached by users who discovered that when they shared photos via social media sites or systems, their embedded metadata disappeared.",
    "source": "B13",
    "source_label": "IPTC — Research",
    "locus": "'Rights Information and Social Media Networks' ¶1",
    "modality": "documented"
   },
   "F48": {
    "kind": "field",
    "quote": "The IPTC Photo Metadata Working Group tested 15 social media sites in 2016 and 2013 to understand how image sharing, through upload and download, affects the integrity of embedded metadata as defined by IPTC standards and the Exif standard.",
    "source": "B13",
    "source_label": "IPTC — Research",
    "locus": "'Rights Information and Social Media Networks' ¶2",
    "modality": "documented"
   },
   "F46": {
    "kind": "field",
    "quote": "IPTC not only defines the standard for photo metadata, but also conducts research about how photo metadata is used and implemented. Our most recent tests and studies:",
    "source": "B13",
    "source_label": "IPTC — Research",
    "locus": "'Photo Metadata Research' ¶1",
    "modality": "self-description"
   },
   "F3": {
    "kind": "field",
    "quote": "IPTC not only defines the standard for photo metadata, but also conducts research about how it is used in the real world. We examine metadata in commonly used software, social media platforms, and more. The removal of rights information as images are transferred is of particular concern.",
    "source": "B1",
    "source_label": "IPTC — Photo Metadata IPTC",
    "locus": "Photo Metadata page: 'Research'",
    "modality": "self-description"
   },
   "PE-11": {
    "kind": "archive",
    "quote": "periodic: 2013, 2016, Spring 2019 (the 2019 page); a software test published August 2014",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], cadence",
    "modality": "attributed",
    "date": "2026-10-29"
   },
   "PE-12": {
    "kind": "archive",
    "quote": "15 social media sites tested in 2016 and 2013 (research page); about a dozen checked regularly (2019 page)",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], count.value",
    "modality": "attributed",
    "date": "2026-10-29"
   },
   "PE-14": {
    "kind": "archive",
    "quote": "results\": \"Spring 2019\", \"earlier\": \"2013, 2016\", \"software_study\": \"August 2014\", \"read\": \"2026-10-29",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], version_and_time",
    "modality": "documented",
    "date": "2026-10-29"
   },
   "F41": {
    "kind": "field",
    "quote": "Pexels … Metadata is stripped off in SavedAs or downloaded files. … pixabay … Metadata is stripped off in SavedAs or downloaded files. … Unsplash … No embedded metadata displayed, metadata is stripped off in SavedAs or downloaded files.",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "results, image-sharing sites: Pexels, pixabay, Unsplash",
    "modality": "documented"
   },
   "F42": {
    "kind": "field",
    "quote": "(Free account tested.) Some embedded metadata displayed. Embedded Creator replaced by account owner. SavedAs files have no XMP metadata.",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "results, image-sharing sites: Flickr",
    "modality": "documented"
   },
   "F43": {
    "kind": "field",
    "quote": "No embedded metadata displayed. SavedAs files have no XMP metadata. A few rights related fields were retained in IIM and Exif. 2 IIM fields contain data generated by Facebook. … Twitter … No embedded metadata displayed. Metadata is stripped off in SavedAs files.",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "results, file and message systems: Facebook, Twitter",
    "modality": "documented"
   },
   "F44": {
    "kind": "field",
    "quote": "Passed through original file, preview can be SavedAs with stripped off metadata.",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "results, file and message systems: Dropbox, Microsoft OneDrive",
    "modality": "documented"
   },
   "F45": {
    "kind": "field",
    "quote": "Download is not a main feature, SaveAs files keep the embedded metadata.",
    "source": "B12",
    "source_label": "IPTC — Social Media Sites Photo Metadata Test Results 2019",
    "locus": "results, image-sharing sites: Behance",
    "modality": "documented"
   },
   "PE-10": {
    "kind": "archive",
    "quote": "2019: of eleven image-sharing sites, Pexels, pixabay and Unsplash stripped metadata from saved and downloaded files; Flickr replaced the embedded creator with the account owner; among file and message systems Twitter stripped it on Save As, Facebook kept a few rights fields in IIM and Exif",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], retention_results",
    "modality": "attributed",
    "date": "2026-10-29"
   },
   "F49": {
    "kind": "field",
    "quote": "Some social media sites or systems remove embedded information like copyright notes, the name of the creator, the description and more, while others protect photographers’ data better. The results show that it is not impossible to preserve metadata in a workflow.",
    "source": "B13",
    "source_label": "IPTC — Research",
    "locus": "'Rights Information and Social Media Networks' ¶3",
    "modality": "interpretation"
   },
   "F50": {
    "kind": "field",
    "quote": "The results, published in August 2014, look promising: … Half of the programs offered fields for photographers to enter rights information, including the date, the image’s creator, copyright notice, and rights usage term. … Two out of three programs helped users retrieve embedded rights data. … Unfortunately, two of the programs didn’t support rights metadata at all.",
    "source": "B13",
    "source_label": "IPTC — Research",
    "locus": "'Rights Information and Software Performance'",
    "modality": "documented"
   },
   "F16": {
    "kind": "field",
    "quote": "Copyright management information metadata must never be removed from the files. … Removal of such metadata impacts on the ability to assert ownership rights and is therefore forbidden by law in many countries.",
    "source": "B4",
    "source_label": "IPTC — IPTC Photo Metadata User Guide",
    "locus": "'Fundamental Guidelines for the Preservation of Embedded Metadata', principle 4",
    "modality": "stipulation"
   },
   "F15": {
    "kind": "field",
    "quote": "By defining this set of minimal metadata properties IPTC does not support any removal of existing metadata outside this set without the explicit permission of the copyright owner of the image. (In simple words: this is not a permission to strip off metadata and is not legal advice.)",
    "source": "B4",
    "source_label": "IPTC — IPTC Photo Metadata User Guide",
    "locus": "'IPTC is often asked which fields should be filled out as a minimum'",
    "modality": "stipulation"
   },
   "F18": {
    "kind": "field",
    "quote": "Your site’s digital asset management system, content management system, image management system or content delivery network may be stripping out embedded metadata fields. Some systems do this with the best of intentions, thinking that it will save a few bytes of bandwidth, but stripping out metadata actually infringes on the copyright holders' rights and may even be illegal in some countries.",
    "source": "B4",
    "source_label": "IPTC — IPTC Photo Metadata User Guide",
    "locus": "'For developers and site administrators: how to ensure the fields are preserved in images on your site'",
    "modality": "hypothesis"
   },
   "F33": {
    "kind": "field",
    "quote": "In that case, the metadata might be stripped from your images by some software on your site. Sometimes this could be your Digital Asset Management system (such as Bynder, WebDAM or Extensis Portfolio). In other cases your Content Management System (such as WordPress or Drupal) might strip off metadata. Or it could be a Content Delivery Network that you use, such as Cloudflare or Cloudinary.",
    "source": "B9",
    "source_label": "IPTC — Google Images and IPTC: Frequently Asked Questions",
    "locus": "answer 3 ¶2",
    "modality": "hypothesis"
   },
   "F31": {
    "kind": "field",
    "quote": "Metadata shouldn't be treated as an infallible form of copyright protection because it can be removed or modified, but it provides useful information that can travel with the image.",
    "source": "B8",
    "source_label": "NeededApps — What Is Image Metadata? EXIF, IPTC and XMP Explained - NeededApps",
    "locus": "'Copyright and Attribution'",
    "modality": "interpretation"
   },
   "O1409-04": {
    "kind": "archive",
    "quote": "physically embodied metadata survives screenshot, rehosting, filename change, metadata stripping, PDF embedding, and sidecar loss.",
    "deposit": 1409,
    "source_label": "#1409 EA-SPXI-ANALOG-01: Machine-Eligible Handwritten Artifacts (v1.2, reissued 2026-10-22; v1.0 edition of record 2026-07-21)",
    "record": "https://www.alexanarch.org/s/records/1409/",
    "locus": "§F.3 The in-pixel inscription membrane",
    "modality": "interpretation",
    "date": "2026-07-21"
   },
   "O1409-05": {
    "kind": "archive",
    "quote": "Triple metadata redundancy doctrine adopted verbatim: in the pixels + embedded (IPTC/XMP/C2PA) + external (HTML/JSON-LD/IIIF/repository).",
    "deposit": 1409,
    "source_label": "#1409 EA-SPXI-ANALOG-01: Machine-Eligible Handwritten Artifacts (v1.2, reissued 2026-10-22; v1.0 edition of record 2026-07-21)",
    "record": "https://www.alexanarch.org/s/records/1409/",
    "locus": "§F.6 Preservation and routing tier",
    "modality": "function",
    "date": "2026-07-21"
   },
   "O127-01": {
    "kind": "archive",
    "quote": "Most provenance signals are engineered for the *publication* layer: cryptographic manifests (C2PA), structured metadata (JSON-LD, Schema.org), authority identifiers (ORCID, DOI), invisible character payloads (zero-width Unicode). All are stripped or rendered invisible long before they reach the training corpus. The body text is what survives.",
    "deposit": 127,
    "source_label": "#127 Inscriptions That Survive the Tokenizer: SPXI-TLP v2.2 — The Training-Layer Provenance Protocol",
    "record": "https://www.alexanarch.org/s/records/127/",
    "locus": "Abstract ¶1",
    "modality": "interpretation",
    "date": "2026-05-25"
   },
   "F1": {
    "kind": "field",
    "quote": "IPTC Photo Metadata sets the industry standard for administrative, descriptive, and copyright information about images.",
    "source": "B1",
    "source_label": "IPTC — Photo Metadata IPTC",
    "locus": "Photo Metadata page: standfirst",
    "modality": "stipulation"
   },
   "F10": {
    "kind": "field",
    "quote": "IPTC Photo Metadata provides data about photographs and the values can be processed by software. Each individual metadata entity is called a property and they are grouped into Administrative, Descriptive and Rights-related properties.",
    "source": "B3",
    "source_label": "IPTC — IPTC Photo Metadata Standard 2025.1",
    "locus": "§1 Overview ¶1",
    "modality": "stipulation"
   },
   "F5": {
    "kind": "field",
    "quote": "Today, the IPTC Photo Metadata Standard consists of two schemas – IPTC Core and IPTC Extension – which were built on the legacy of the original IPTC-IIM, and developed by the IPTC for professional use with a focus on news and stock photos.",
    "source": "B2",
    "source_label": "IPTC — IPTC Photo Metadata Standard",
    "locus": "IPTC Photo Metadata Standard page ¶3",
    "modality": "stipulation"
   },
   "PE-05": {
    "kind": "archive",
    "quote": "the photograph as a file: embedded Exif and IPTC metadata (IIM and XMP)",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], provenance_object",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "F9": {
    "kind": "field",
    "quote": "This is the IPTC Photo Metadadata Standard 2025.1, including … IPTC Core Metadata Schema 1.5 … IPTC Extension Metadata Schema 1.9",
    "source": "B3",
    "source_label": "IPTC — IPTC Photo Metadata Standard 2025.1",
    "locus": "'About the Standard'",
    "modality": "documented"
   },
   "F12": {
    "kind": "field",
    "quote": "IPTC Extension schema 1.8 specifications",
    "source": "B3",
    "source_label": "IPTC — IPTC Photo Metadata Standard 2025.1",
    "locus": "table of contents, Extension heading (and the section heading at the same place in the body)",
    "modality": "documented"
   },
   "F25": {
    "kind": "field",
    "quote": "The Information Interchange Model (IIM) is a file structure and set of metadata attributes that can be applied to text, images and other media types. It was developed in the early 1990s by the International Press Telecommunications Council (IPTC) to expedite the international exchange of news among newspapers and news agencies.",
    "source": "B6",
    "source_label": "Wikipedia — IPTC Information Interchange Model - Wikipedia",
    "locus": "article lead ¶1",
    "modality": "documented"
   },
   "F52": {
    "kind": "field",
    "quote": "The IPTC defined a set of metadata properties that can be applied to images, part of a broader standard developed in the early 1990s and known as the IPTC Information Interchange Model (IIM). Embedded IIM image information is often referred to as an \"IPTC header\".",
    "source": "B15",
    "source_label": "Wikipedia — International Press Telecommunications Council",
    "locus": "article 'International Press Telecommunications Council', §IPTC Standards › Photo metadata ¶1",
    "modality": "documented"
   },
   "F26": {
    "kind": "field",
    "quote": "IIM metadata embedded in images are often referred to as \"IPTC headers\", and can be easily encoded and decoded by most popular photo editing software.",
    "source": "B6",
    "source_label": "Wikipedia — IPTC Information Interchange Model - Wikipedia",
    "locus": "article lead ¶3",
    "modality": "documented"
   },
   "F27": {
    "kind": "field",
    "quote": "The Extensible Metadata Platform (XMP) has largely superseded IIM's file structure, but the IIM image attributes are defined in the IPTC Core schema for XMP and most image manipulation programs keep the XMP and non-XMP IPTC attributes synchronized.",
    "source": "B6",
    "source_label": "Wikipedia — IPTC Information Interchange Model - Wikipedia",
    "locus": "article lead ¶4",
    "modality": "documented"
   },
   "F6": {
    "kind": "field",
    "quote": "IPTC worked alongside Adobe on the technical implementation of the metadata that employs Adobe’s XMP technology (now an ISO Standard) as an enriched alternative to the IIM format.",
    "source": "B2",
    "source_label": "IPTC — IPTC Photo Metadata Standard",
    "locus": "IPTC Photo Metadata Standard page ¶3",
    "modality": "documented"
   },
   "F14": {
    "kind": "field",
    "quote": "IPTC Core fields can be embedded in the IIM format and/or in the XMP format. A key challenge for metadata embedded in parallel in IIM and XMP is that the values are synchronised - this should be taken care of by the image management software.",
    "source": "B4",
    "source_label": "IPTC — IPTC Photo Metadata User Guide",
    "locus": "Introduction, 'How IPTC Photo Metadata Evolved Over Time'",
    "modality": "self-description"
   },
   "F8": {
    "kind": "field",
    "quote": "How Photo Metadata formats are stored within image files are defined by non-IPTC file format standards, such as JPEG/JFIF, TIFF, PNG and more.",
    "source": "B2",
    "source_label": "IPTC — IPTC Photo Metadata Standard",
    "locus": "'What’s Defined by This Standard', last paragraph",
    "modality": "self-description"
   },
   "F11": {
    "kind": "field",
    "quote": "Because the IPTC acknowledges these technical metadata standards of other bodies and does not wish to duplicate existing metadata properties, the IPTC Photo Metadata specification does not include any technical metadata.",
    "source": "B3",
    "source_label": "IPTC — IPTC Photo Metadata Standard 2025.1",
    "locus": "§2.2 Technical Metadata",
    "modality": "self-description"
   },
   "F30": {
    "kind": "field",
    "quote": "IPTC refers to metadata standards developed for the professional exchange and description of media. Unlike EXIF, which is heavily focused on technical capture information, IPTC metadata is commonly used to describe, organize and manage images.",
    "source": "B8",
    "source_label": "NeededApps — What Is Image Metadata? EXIF, IPTC and XMP Explained - NeededApps",
    "locus": "'What Is IPTC Metadata?'",
    "modality": "interpretation"
   },
   "F4": {
    "kind": "field",
    "quote": "The IPTC Photo Metadata Standard is the most widely used standard to describe photos, because of its universal acceptance among news agencies, photographers, photo agencies, libraries, museums, and other related industries.",
    "source": "B2",
    "source_label": "IPTC — IPTC Photo Metadata Standard",
    "locus": "IPTC Photo Metadata Standard page ¶1",
    "modality": "self-description"
   },
   "F28": {
    "kind": "field",
    "quote": "Because of its nearly universal acceptance among photographers — even amateurs — this is by far IPTC's most widely used standard.",
    "source": "B6",
    "source_label": "Wikipedia — IPTC Information Interchange Model - Wikipedia",
    "locus": "article lead ¶5",
    "modality": "interpretation"
   },
   "F2": {
    "kind": "field",
    "quote": "Photo metadata is key to protecting images' copyright and licensing information online. It is also essential for managing digital assets.",
    "source": "B1",
    "source_label": "IPTC — Photo Metadata IPTC",
    "locus": "Photo Metadata page: 'Critical to Photo and Related Businesses'",
    "modality": "stipulation"
   },
   "F53": {
    "kind": "field",
    "quote": "The International Press Telecommunications Council (IPTC), based in London, United Kingdom, is a consortium of the world's major news agencies, other news providers and news industry vendors and acts as the global standards body of the news media.",
    "source": "B15",
    "source_label": "Wikipedia — International Press Telecommunications Council",
    "locus": "article lead ¶1",
    "modality": "documented"
   },
   "F35": {
    "kind": "field",
    "quote": "Introduction and welcome, 20 years of IPTC Photo Metadata, Recent work",
    "source": "B11",
    "source_label": "YouTube·IPTC — Introduction and welcome, 20 years of IPTC Photo Metadata, Recent work ...",
    "locus": "card title (video; the watch page answered HTTP 429; title confirmed by YouTube oEmbed, channel IPTC)",
    "modality": "documented"
   },
   "F22": {
    "kind": "field",
    "quote": "The IPTC Photo Metadata Working Group has released version 2025.1 of the IPTC Photo Metadata Standard, including properties that can be used for AI-generated content.",
    "source": "B5",
    "source_label": "IPTC — IPTC Photo Metadata Standard adds new properties for AI-generated content - IPTC",
    "locus": "announcement ¶2",
    "modality": "documented"
   },
   "F7": {
    "kind": "field",
    "quote": "The 2025.1 version, published in November 2025, adds four new properties to handle metadata for AI-generated content: AI Prompt Information, AI Prompt Writer Name, AI System Used and AI System Version Used.",
    "source": "B2",
    "source_label": "IPTC — IPTC Photo Metadata Standard",
    "locus": "'What’s New in the 2025.1 Standard'",
    "modality": "documented"
   },
   "F23": {
    "kind": "field",
    "quote": "AI System Used … Definition: The AI engine and/or the model name used to generate this image.",
    "source": "B5",
    "source_label": "IPTC — IPTC Photo Metadata Standard adds new properties for AI-generated content - IPTC",
    "locus": "announcement, the new properties",
    "modality": "stipulation"
   },
   "F13": {
    "kind": "field",
    "quote": "Data mining prohibition or permission, optionally with constraints.",
    "source": "B3",
    "source_label": "IPTC — IPTC Photo Metadata Standard 2025.1",
    "locus": "§11.11 Data Mining, Definition",
    "modality": "stipulation"
   },
   "F19": {
    "kind": "field",
    "quote": "It may be important to distinguish AI-generated images from \"regular\" images: for example, to avoid re-training AI models on content that was already generated by a model, to understand which images can fall under copyright and which cannot (in some jurisdictions) and to avoid misinterpreting generated images as being real photos.",
    "source": "B4",
    "source_label": "IPTC — IPTC Photo Metadata User Guide",
    "locus": "'Applying Metadata to AI-generated Images' ¶2",
    "modality": "interpretation"
   },
   "F20": {
    "kind": "field",
    "quote": "Creator is bound to the owner of the intellectual property of an image in many countries and there are first legal decisions that AI generated images are not considered as creative work generating an intellectual property. Therefore, our recommendation is to leave the Image Creator field empty.",
    "source": "B4",
    "source_label": "IPTC — IPTC Photo Metadata User Guide",
    "locus": "'Applying Metadata to AI-generated Images', field suggestions",
    "modality": "stipulation"
   },
   "F21": {
    "kind": "field",
    "quote": "The Digital Source Type field should be set to the URI value http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia or http://cv.iptc.org/newscodes/digitalsourcetype/compositeSynthetic.",
    "source": "B4",
    "source_label": "IPTC — IPTC Photo Metadata User Guide",
    "locus": "'Applying Metadata to AI-generated Images', field suggestions",
    "modality": "stipulation"
   },
   "F24": {
    "kind": "field",
    "quote": "This image contains the new IPTC Photo Metadata fields “AI Prompt Information”, “AI System Used” and “AI Prompt Writer Name”. Note that adding the new IPTC Photo Metadata properties has rendered the C2PA metadata invalid.",
    "source": "B5",
    "source_label": "IPTC — IPTC Photo Metadata Standard adds new properties for AI-generated content - IPTC",
    "locus": "announcement, caption of the example image",
    "modality": "documented"
   },
   "PE-16": {
    "kind": "archive",
    "quote": "NOT a test of C2PA credentials",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], negative_tags.1",
    "modality": "self-description",
    "date": "2026-10-29"
   },
   "O725-01": {
    "kind": "archive",
    "quote": "| IPTC AI metadata | Machine-readable AI-generation tags | Layer 1 metadata | Disclosure, not lineage |",
    "deposit": 725,
    "source_label": "#725 Provenance After AI Metadata Packet for Disambiguation: From Artifact Authenticity to Licensing Audit to Semantic Provenance",
    "record": "https://www.alexanarch.org/s/records/725/",
    "locus": "§4 Disambiguation Matrix, row 'IPTC AI metadata'",
    "modality": "interpretation",
    "date": "2026-05-08"
   },
   "O725-02": {
    "kind": "archive",
    "quote": "Artifact provenance (C2PA) verifies that *this file* was created by *this source* at *this time*. It is necessary but operates at the moment of artifact creation. … The three dimensions are cumulative and independent. Each can be preserved or destroyed regardless of the others.",
    "deposit": 725,
    "source_label": "#725 Provenance After AI Metadata Packet for Disambiguation: From Artifact Authenticity to Licensing Audit to Semantic Provenance",
    "record": "https://www.alexanarch.org/s/records/725/",
    "locus": "§1.4 The Three Dimensions ¶1, ¶4",
    "modality": "stipulation",
    "date": "2026-05-08"
   },
   "O725-03": {
    "kind": "archive",
    "quote": "**Misreading:** Provenance is a property attached to digital objects — a field, a tag, a manifest, a credential, separable from the object it documents. … To strip provenance is to change what the meaning *is*",
    "deposit": 725,
    "source_label": "#725 Provenance After AI Metadata Packet for Disambiguation: From Artifact Authenticity to Licensing Audit to Semantic Provenance",
    "record": "https://www.alexanarch.org/s/records/725/",
    "locus": "§3.4 Misreading: provenance as metadata",
    "modality": "stipulation",
    "date": "2026-05-08"
   },
   "O1409-06": {
    "kind": "archive",
    "quote": "IPTC DigitalSourceType declared as digital capture of a physical original — the nonsynthetic claim made machine-readable inside the file, in the same controlled vocabulary whose trainedAlgorithmicMedia value marks the synthetic class.",
    "deposit": 1409,
    "source_label": "#1409 EA-SPXI-ANALOG-01: Machine-Eligible Handwritten Artifacts (v1.2, reissued 2026-10-22; v1.0 edition of record 2026-07-21)",
    "record": "https://www.alexanarch.org/s/records/1409/",
    "locus": "§E.1 The detection asymmetry (v0.3), substrate checksum element 4",
    "modality": "interpretation",
    "date": "2026-07-21"
   },
   "O1409-03": {
    "kind": "archive",
    "quote": "Scaffold := everything machine-readable around the ink: filename, alt, caption, title, abstract-of-frame, structured data, IPTC/XMP/EXIF, C2PA assertions, IIIF manifest, sitemap, page prose, data texts.",
    "deposit": 1409,
    "source_label": "#1409 EA-SPXI-ANALOG-01: Machine-Eligible Handwritten Artifacts (v1.2, reissued 2026-10-22; v1.0 edition of record 2026-07-21)",
    "record": "https://www.alexanarch.org/s/records/1409/",
    "locus": "§2 The Payload Discipline, definition of Scaffold",
    "modality": "stipulation",
    "date": "2026-07-21"
   },
   "R1409-07": {
    "kind": "archive",
    "quote": "C2PA, FADGI, and IPTC provenance vocabularies are the same insight arriving as standards. The substrate checksum is computational diplomatics for the training layer",
    "deposit": 1409,
    "source_label": "#1409 EA-SPXI-ANALOG-01: Machine-Eligible Handwritten Artifacts (v1.2, reissued 2026-10-22; v1.0 edition of record 2026-07-21)",
    "record": "https://www.alexanarch.org/s/records/1409/",
    "locus": "§I.2 The substrate checksum is diplomatics, then forensics",
    "modality": "interpretation",
    "date": "2026-07-21"
   },
   "F17": {
    "kind": "field",
    "quote": "Google displays three IPTC photo metadata fields, wherever available, for an image shown as search result. This tells the viewer who is the creator and who is the copyright holder of the image and what credit line should be shown next to the image.",
    "source": "B4",
    "source_label": "IPTC — IPTC Photo Metadata User Guide",
    "locus": "'IPTC Photo Metadata and Google Images'",
    "modality": "documented"
   },
   "F29": {
    "kind": "field",
    "quote": "Quick Guide to IPTC Photo Metadata and Google Images … explains how to check and update IPTC Photo Metadata for best results in Google Images search results, as introduced by Google in September 2018.",
    "source": "B7",
    "source_label": "IPTC — IPTC Guidelines & Support",
    "locus": "'Handbooks and User Guides'",
    "modality": "documented"
   },
   "F32": {
    "kind": "field",
    "quote": "IPTC maintains the technical standard that image creators can use to put their creator and copyright details inside image files. We call this “photo metadata”. Google extracts this information from photos in search results and displays it to help you find who owns the image.",
    "source": "B9",
    "source_label": "IPTC — Google Images and IPTC: Frequently Asked Questions",
    "locus": "answer 1",
    "modality": "documented"
   },
   "F34": {
    "kind": "field",
    "quote": "IPTC's Photo Metadata Inspector tool lets you see embedded metadata in many image files. For eligible images, a context menu will appear when you right-click on the image. Select \"View IPTC Photo Metadata\" and you will be taken to IPTC's Get Photo Metadata (GetPMD) tool which will display all metadata embedded in the image file.",
    "source": "B10",
    "source_label": "Chrome Web Store — IPTC Photo Metadata inspector - Chrome Web Store - Google",
    "locus": "Overview",
    "modality": "stipulation"
   },
   "O1409-01": {
    "kind": "archive",
    "quote": "C4 — Embedded + attached metadata (ESTABLISHED as extracted; composition role unknown). Google documents extraction of: schema.org ImageObject structured data; IPTC photo metadata embedded in the file (travels with the image across pages)",
    "deposit": 1409,
    "source_label": "#1409 EA-SPXI-ANALOG-01: Machine-Eligible Handwritten Artifacts (v1.2, reissued 2026-10-22; v1.0 edition of record 2026-07-21)",
    "record": "https://www.alexanarch.org/s/records/1409/",
    "locus": "§1 Technical substrate, channel C4 (draft v0.1, 2026-07-20)",
    "modality": "interpretation",
    "date": "2026-07-21"
   },
   "O1409-02": {
    "kind": "archive",
    "quote": "Metadata is scaffold by definition here — but it is scaffold the pipeline provably reads.",
    "deposit": 1409,
    "source_label": "#1409 EA-SPXI-ANALOG-01: Machine-Eligible Handwritten Artifacts (v1.2, reissued 2026-10-22; v1.0 edition of record 2026-07-21)",
    "record": "https://www.alexanarch.org/s/records/1409/",
    "locus": "§1 Technical substrate, channel C4, last sentence",
    "modality": "interpretation",
    "date": "2026-07-21"
   },
   "PE-13": {
    "kind": "archive",
    "quote": "dated results; the 2019 table is not a 2026 platform measurement. Succeeded in method by Metawatch (2026)",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], lifecycle.detail",
    "modality": "self-description",
    "date": "2026-10-29"
   },
   "PE-15": {
    "kind": "archive",
    "quote": "NOT a current platform audit: each table carries its test year",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], negative_tags.0",
    "modality": "self-description",
    "date": "2026-10-29"
   },
   "PE-17": {
    "kind": "archive",
    "quote": "rel\": \"has_part\", \"target\": \"iptc-metawatch\" … \"rel\": \"neighbour\", \"target\": \"c2pa-conformance",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], relations",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "PE-18": {
    "kind": "archive",
    "quote": "the 2016 and 2013 result tables\", \"the August 2014 software study\", \"the interoperability test procedures in detail",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], unchecked",
    "modality": "self-description",
    "date": "2026-10-29"
   },
   "PE-03": {
    "kind": "archive",
    "quote": "test series",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json rows[slug == 'iptc-photo-metadata-tests'], kind",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "PE-19": {
    "kind": "archive",
    "quote": "What provenance does this system carry, through which operation, on whose assertion, with what evidence of survival?",
    "deposit": null,
    "source_label": "Provenance meta-aggregator record: IPTC photo metadata tests (https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/), editor Lee Sharks, census compiled 2026-10-29, schema 1.0",
    "record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests/",
    "locus": "census.json organizing_question",
    "modality": "stipulation",
    "date": "2026-10-29"
   },
   "F51": {
    "kind": "field",
    "quote": "Wikipedia does not have an article with this exact name. … There were no results matching the query. The pages \"IPTC photo metadata tests\" and '\"IPTC photo metadata tests\"' do not exist.",
    "source": "B14",
    "source_label": "Wikipedia — IPTC photo metadata tests (no article)",
    "locus": "Wikipedia: title IPTC_photo_metadata_tests (and IPTC_Photo_Metadata)",
    "modality": "documented"
   },
   "CAP-1-10": {
    "kind": "archive",
    "quote": "Asked for IPTC photo metadata, the Overview explains the standard from the IPTC's own pages: what it holds, how it differs from camera data, how it has grown to describe images an AI system made, and the tools that read it.",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, reading",
    "modality": "documented",
    "date": "2026-10-29"
   },
   "CAP-1-01": {
    "kind": "archive",
    "quote": "Core and Extension, IIM and XMP, the 2025.1 release and its AI properties are the IPTC's own (cards 2, 3 and 5).",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, findings[0] s2",
    "modality": "documented",
    "date": "2026-10-29"
   },
   "CAP-1-09": {
    "kind": "archive",
    "quote": "The IPTC named; no person; no identifier; the IPTC's own pages cited (eight of eleven cards).",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, per_note",
    "modality": "documented",
    "date": "2026-10-29"
   },
   "CAP-1-02": {
    "kind": "archive",
    "quote": "The census row at this name is the IPTC Photo Metadata Working Group's tests of what platforms do to embedded metadata: Pexels, pixabay and Unsplash stripped it from saved and downloaded files, Flickr replaced the embedded creator with the account owner (2019).",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, findings[1] s2",
    "modality": "documented",
    "date": "2026-10-29"
   },
   "CAP-1-03": {
    "kind": "archive",
    "quote": "None of this is in the composition. At the bare name the Overview composes the carrier and leaves out the measurement of its erasure.",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, findings[1] s3–s4",
    "modality": "interpretation",
    "date": "2026-10-29"
   },
   "CAP-1-06": {
    "kind": "archive",
    "quote": "At the bare name the composition layer gives the standard at the grain of its own documentation and leaves the census row's object, the record of the standard's erasure in transit, unsaid.",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, analysis s1",
    "modality": "interpretation",
    "date": "2026-10-29"
   },
   "CAP-1-04": {
    "kind": "archive",
    "quote": "The composition says search engines read the data 'to display creator information and licensing attributes directly in search results', from IPTC's Google Images pages. The same organization's tests record that the data is often gone before any engine can read it; the composition gives the reading and omits the loss.",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, findings[2] s2–s3",
    "modality": "interpretation",
    "date": "2026-10-29"
   },
   "CAP-1-05": {
    "kind": "archive",
    "quote": "'AI & Content Provenance' is the composition's heading for the 2025.1 properties; the IPTC announcement (card 5, 27 November 2025) gives them as properties of AI-generated content.",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, findings[3] s2",
    "modality": "documented",
    "date": "2026-10-29"
   },
   "CAP-1-08": {
    "kind": "archive",
    "quote": "A baseline: the record landed on provenanceerasure.org the same day (commit 8a9f153) and no card cites it.",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, q_kind",
    "modality": "documented",
    "date": "2026-10-29"
   },
   "CAP-1-07": {
    "kind": "archive",
    "quote": "The record keeps the tests as its unit; the capture is the baseline for the name, and shows that the measurement of stripping is a second address.",
    "deposit": null,
    "source_label": "Capture Registry (EA-WG-CAPTURES-01), entry iptc-photo-metadata-aio-20261029 (OBS-9b96943ca090, AXN:0AD0.CAPTURE.☀️🔵❤️♌🌀🎯)",
    "record": "https://www.alexanarch.org/captures/iptc-photo-metadata-aio-20261029/",
    "locus": "iptc-photo-metadata-aio-20261029, analysis s2",
    "modality": "interpretation",
    "date": "2026-10-29"
   }
  },
  "note": "The knowledge object (KO): the entry as public knowledge, each sentence sourced by the claims it lists. The compression, the field-only arm, the transcript, the delta and the kernel are in the row (links.row), which is the authority."
 },
 "source": "operator, 2026-10-29: 'we can simply build them here as against their wikipedia articles if they exist, their own pages, etc.'; 'shoot me those search strings. strings on the bare entity, no follow questions... then we'll write the /nons'; the provenance meta-aggregator entity (provenanceerasure.org/aggregators/iptc-photo-metadata-tests/)",
 "stage": "composed 2026-10-29 under EA-NEGONT-02 v0.9, #1690, equal case, ρ = extends (draft, not frozen; ledgers unaudited, one extractor; checked by the session and the page builder)",
 "date": "2026-10-29",
 "status": {
  "procedure": "EA-NEGONT-02 v0.9, #1690: equal case, ρ = extends, read from the provenance census record, the capture record and #725's statement of relation; archive selected by D/R/O (4 deposits admitted by reading, 3 with claims and 1 grouped as an instance; hop of 54 read, 1 admitted), with the provenance census record (19 claims) and the Capture Registry's findings, reading, analysis and notes (10 claims) ledgered as the archive's records of the entity; the field B by three origins (11 cards, 2 own pages, 2 Wikipedia titles); the composer read the ledgers, never the transcript, except where the brief asks for T's claims and the delta",
  "ledger": "unaudited (§3.8: one extractor per ledger); field quotes 53/53 verified by script against the saved page texts, the Wikipedia responses or the card title; archive quotes 40/40 verified against the registry, census.json and the deposit texts",
  "frozen": false,
  "breaches": []
 },
 "addresses": [
  {
   "address": "IPTC photo metadata",
   "address_url": "https://www.alexanarch.org/addresses/iptc-photo-metadata/",
   "register": []
  }
 ],
 "counts": {
  "ko_sentences": 30,
  "p_words": 349,
  "field_claims": 53,
  "archive_claims": 40,
  "ko_field_claims_cited": 53,
  "ko_archive_claims_cited": 40,
  "admitted_deposits": 4,
  "register_addresses": 0,
  "traversal": {
   "D_sentences": 17,
   "D_deposits": 3,
   "R_sentences": 3,
   "R_deposits": 1,
   "O_direct": 7,
   "O_class": 6,
   "O_deposits": 7,
   "H_candidates": 54
  }
 },
 "links": {
  "record": "https://www.alexanarch.org/non/iptc-photo-metadata-tests/",
  "table_of_contents": "https://www.alexanarch.org/non/index.json",
  "register": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/register.json",
  "row": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/rows/iptc-photo-metadata-tests.json",
  "archive_ledger": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/ledgers/iptc-photo-metadata-tests/ledger-archive.json",
  "field_ledger": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/ledgers/iptc-photo-metadata-tests/field.json",
  "selection": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/traversal/iptc-photo-metadata-tests/",
  "traversal": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/traversal/iptc-photo-metadata-tests/",
  "traversal_summary": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/traversal/iptc-photo-metadata-tests/summary.json",
  "reading": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/traversal/iptc-photo-metadata-tests/reading.json",
  "configuration": "https://www.alexanarch.org/datasets/negative-of-the-negative/v2/panel/configs/iptc-photo-metadata-tests.json",
  "address_page": "https://www.alexanarch.org/addresses/iptc-photo-metadata/",
  "provenance_record": "https://www.provenanceerasure.org/aggregators/iptc-photo-metadata-tests",
  "dataset": "https://huggingface.co/datasets/leesharks/negative-of-the-negative"
 },
 "row_sha256": "77b4e9a1c08fc52270bbaaa518ddc1f2871529dc275c59456d50b9bc86c40ed4",
 "record_url": "https://www.alexanarch.org/non/iptc-photo-metadata-tests/",
 "json_url": "https://www.alexanarch.org/non/iptc-photo-metadata-tests/entity.json",
 "spec": "https://www.alexanarch.org/s/records/1690/",
 "creator": "Lee Sharks",
 "orcid": "0009-0000-1599-0703",
 "license": "CC BY 4.0"
}