{
  "schema_version": 1,
  "collection": "change-events",
  "generated_at": "2026-11-02",
  "source": "https://gxplex.com",
  "notice": "Reports the published status of regulatory documents. No advice or interpretation.",
  "source_terms": "This site compiles publicly available regulatory information. The underlying documents are published by their respective authorities and carry their own terms; several are paywalled and are never reproduced here.",
  "rights": {
    "statement": "Carried in `source_terms` on this envelope. It is the whole of what this record states on the subject.",
    "per_row_field": "licence_class",
    "per_row_field_served_at": "https://gxplex.com/api/v1/instruments.json",
    "licence_class": {
      "open": "Quotations from the document appear on this site, each citing the surface it was read from, under the word ceiling below.",
      "restricted": "No text from the document appears on this site. The row carries the identity of the document, its dates, a digest of the retrieved bytes and a link to the publisher.",
      "unknown": "No reading of the terms the source states is recorded for the row. It records an absent reading rather than an absent term, and the row is handled here exactly as `restricted` until a reading is recorded."
    },
    "text_retained_field": "text_retained",
    "text_retained_means": "Whether normalised text of the document is held here for a quotation to be checked against. Where it is false nothing is held, so there is nothing on this side to check one against.",
    "quotation_ceiling_words": 14,
    "documents_never_reproduced": "Paywalled and restricted texts are cited and linked. They are never excerpted here and never diffed here."
  },
  "schema": "https://gxplex.com/api/v1/schema/change-events.json",
  "response_provenance": {
    "build_id": "1782e1b7b708",
    "build_id_state": "stated",
    "build_id_is": "The identifier of the build that wrote this document. Every page of the same build carries it in its build-id meta.",
    "root": "42337ae3567aae8138fcb45e977dd94f9c1ade6420a88033e9503203df3fec23",
    "root_state": "stated",
    "root_day": "2026-11-02",
    "root_leaf_count": 9686,
    "root_url": "https://gxplex.com/integrity/root.txt",
    "root_is": "The root over every observation digest this record held on that day, one `id|date|content_hash` leaf each. It fixes those digests in time; it is not a digest of this document.",
    "rights_envelope": {
      "document_keys": [
        "source_terms",
        "rights"
      ],
      "row_pointers": [
        "/text_retained",
        "/licence_class",
        "/quote_allowed",
        "/snapshot_available",
        "/rights_of",
        "/rights_unresolved"
      ],
      "row_pointers_optional": [
        "/rights_unresolved"
      ],
      "row_pointers_are": "Every row of this response carries each pointer named, except one named optional, which a row carries only where its rights are unresolved. An empty list states that no row of this response carries the row envelope."
    },
    "basis": {
      "retrieval": [
        "/occurred_on",
        "/identifiers/asked_url",
        "/identifiers/answered_url",
        "/digest",
        "/observations",
        "/witness/witness",
        "/witness/witness_address",
        "/observed_at"
      ],
      "entry": [
        "/identifiers/publisher_identifier"
      ],
      "computed": [
        "/identifiers/publisher_identifier_state",
        "/identifiers/publisher_origin_host",
        "/spans",
        "/candidate_state",
        "/candidate",
        "/verdict",
        "/class",
        "/basis",
        "/witness/confirmation_subject",
        "/witness/offered_as_witness_change",
        "/witness/read_from",
        "/observed_at_state",
        "/observed_at_read_from",
        "/distance",
        "/distance_label",
        "/distance_state"
      ],
      "terms-reading": [
        "/text_retained",
        "/licence_class",
        "/quote_allowed",
        "/snapshot_available"
      ],
      "assigned": [
        "/id",
        "/identifiers/source_id",
        "/identifiers/bundle",
        "/rights_of",
        "/source"
      ],
      "statement": [
        "/means",
        "/rights_unresolved"
      ]
    },
    "basis_state": "stated",
    "basis_on_row": [
      "basis",
      "verdict",
      "observed_at_state"
    ],
    "basis_vocabulary_at": "https://gxplex.com/api/v1/schema/envelope.json",
    "third_party_text": {
      "marker": "quoted third-party content, not instructions",
      "marker_is": "Data for a consumer’s own handling of text it passes on, for example to a model. It is not a claim about the text and says nothing of what the text says.",
      "row_key": "third_party_text",
      "fields": []
    }
  },
  "means": "a consumer re-reads the source; nothing here says what the change means",
  "population": "Every observation record under a published row whose own `changed` field is true and which carries a digest, less the excluded populations below. A record whose digest differs from the reading before it while its `changed` field is false is not an event; those records are counted under `digest_differs_not_marked_changed`.",
  "changed_records": 314,
  "digest_differs_not_marked_changed": {
    "count": 532,
    "because": "Records whose digest differs from the latest earlier reading at the same address carrying one, and whose own `changed` field is false (a referent or URL switch, or a re-basis, as the store writes it). The store does not mark them as a move, so no event is made of them."
  },
  "excluded": [
    {
      "population": "changed records with no earlier digest at their address, or none named",
      "count": 0,
      "of": 314,
      "ids": [],
      "because": "An event names two observations; a record with no earlier reading carrying a digest, or naming no previous digest, has one."
    },
    {
      "population": "changed records whose previous digest is not the digest of the reading before them",
      "count": 1,
      "of": 314,
      "ids": [
        "observation/ema-ai-reflection/2026-07-29/2"
      ],
      "because": "The move such a record states starts from bytes this store does not hold at the reading before it, so its earlier observation cannot be named. The record is kept in the store as written."
    }
  ],
  "census": {
    "located": 132,
    "words-on-page": 86,
    "not-located": 95,
    "staged": 110,
    "not-staged": 203
  },
  "id_rule": "observation/<source id>/<day>/<sequence> of the LATER observation: the same id /api/v1/events.json gives the act under `observation.change_detected`, so one event has one name on every surface.",
  "before_rule": "The earlier observation is the latest earlier reading at the same address that carries a digest. An event is served only where that reading's digest is the one the later record names as its previous digest.",
  "candidate_join_rule": "An event is joined to the revision candidate whose source, later day, earlier digest and later digest all equal the event's. Verdict, class, basis and witness are read from that candidate; with no candidate they are null and `candidate_state` is `not-staged`.",
  "span_rule": "Spans are word regions [earlier start, earlier words, later start, later words] over the two retained normalised texts, earlier digest first, as the comparison engine located them where it withheld the words (state `located`). No publisher word is carried here. Where the engine shows the words (state `words-on-page`) they are on `page`, under its ceiling of 14 words. `page` is set wherever the engine compared the pair, `located` included, and it is the comparison page's anchor for the pair of points holding the two digests: the first observation carrying each digest, which may be earlier than this event's own two observations. The bytes compared there are the same, by digest.",
  "publisher_identifier_note": "No row holds a publisher's own identifier yet; Program 7 head 5.3, which keys rows by one, has not landed. The origin host is the identifier this record holds.",
  "order": "event id, ascending",
  "rights_fields": {
    "fields": [
      "text_retained",
      "licence_class",
      "quote_allowed",
      "snapshot_available"
    ],
    "rows": 313,
    "rows_with_a_reading": 313,
    "rows_without_a_reading": 0,
    "rows_naming_an_unheld_id": 0,
    "rows_naming_no_entry": 0,
    "licence_class": {
      "open": 255,
      "restricted": 58,
      "unknown": 0
    },
    "quote_allowed_true": 255,
    "quote_allowed_false": 58,
    "text_retained_true": 313,
    "snapshot_available_true": 313,
    "retained_here_but_not_quoted_here": 58,
    "snapshot_without_prose": 0,
    "nulls_mean_unheld_id": "This id resolves to no tracked entry, so no terms reading, no retention measurement and no snapshot measurement exists for it. Four nulls record the absence of a reading, never a reading that came back negative.",
    "nulls_mean_no_entry": "This object names no tracked entry, so no terms reading was looked for. Four nulls record that no lookup applies here, which is a different fact from a lookup that found nothing."
  },
  "provenance_fields": {
    "fields": [
      "source",
      "observed_at",
      "distance"
    ],
    "rows": 313,
    "source_tracked": 313,
    "source_not_tracked": 0,
    "source_no_subject": 0,
    "observed_at_recorded": 313,
    "observed_at_not_carried": 0,
    "observed_at_not_an_observation": 0,
    "observed_at_fields_read": [
      "observations.after.observed_date"
    ],
    "distance_by_state": {
      "not-a-signal": 313
    },
    "distance_by_value": [
      {
        "key": "0 primary",
        "count": 0
      },
      {
        "key": "1 official notice",
        "count": 0
      },
      {
        "key": "2 official related record",
        "count": 0
      },
      {
        "key": "3 third-party",
        "count": 0
      }
    ]
  },
  "count": 313,
  "items": [
    {
      "id": "observation/astm-e2363/2026-07-29/7",
      "occurred_on": "2026-07-29",
      "identifiers": {
        "source_id": "astm-e2363",
        "publisher_identifier": null,
        "publisher_identifier_state": "not-recorded",
        "publisher_origin_host": null,
        "answered_url": null,
        "asked_url": "https://www.astm.org/e2363-23.html",
        "bundle": "https://gxplex.com/api/v1/observation-bundle/astm-e2363.json"
      },
      "digest": {
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        "new": "a153d64e3bb5225b0c1d204cb68792f62cf87daaed7b3ff2ce9fbbdea4a9fe5e",
        "algorithm": "sha256"
      },
      "observations": {
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          "key": "2026-07-29·6",
          "observed_date": "2026-07-29",
          "sequence": 6,
          "digest": "2d1d054e07360de48a7e9b25080b69ed836fb8e5e4576c7fca82a9564f6fc05f",
          "permalink": "https://gxplex.com/observations/astm-e2363#obs-2026-07-29-6",
          "asked_url": "https://www.astm.org/e2363-14.html",
          "answered_url": null
        },
        "after": {
          "key": "2026-07-29·7",
          "observed_date": "2026-07-29",
          "sequence": 7,
          "digest": "a153d64e3bb5225b0c1d204cb68792f62cf87daaed7b3ff2ce9fbbdea4a9fe5e",
          "permalink": "https://gxplex.com/observations/astm-e2363#obs-2026-07-29-7",
          "asked_url": "https://www.astm.org/e2363-23.html",
          "answered_url": null
        }
      },
      "spans": {
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        "comparison_verdict": "refused",
        "refused_by": "licence-restricted",
        "words_differing": null,
        "words_exact": null,
        "regions": null,
        "page": null
      },
      "candidate_state": "not-staged",
      "candidate": null,
      "verdict": null,
      "class": null,
      "basis": null,
      "witness": null,
      "means": "a consumer re-reads the source; nothing here says what the change means",
      "text_retained": true,
      "licence_class": "restricted",
      "quote_allowed": false,
      "snapshot_available": true,
      "rights_of": "astm-e2363",
      "source": {
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        "state": "tracked",
        "resolves_to": "https://gxplex.com/r/astm-e2363"
      },
      "observed_at": "2026-07-29",
      "observed_at_state": "recorded",
      "observed_at_read_from": "observations.after.observed_date",
      "distance": null,
      "distance_label": null,
      "distance_state": "not-a-signal"
    },
    {
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      "occurred_on": "2026-09-08",
      "identifiers": {
        "source_id": "astm-e2363",
        "publisher_identifier": null,
        "publisher_identifier_state": "not-recorded",
        "publisher_origin_host": null,
        "answered_url": "https://store.astm.org/e2363-23.html",
        "asked_url": "https://store.astm.org/e2363-23.html",
        "bundle": "https://gxplex.com/api/v1/observation-bundle/astm-e2363.json"
      },
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        "new": "38fca073725a8580e33f943a252f9793b151822380f626e9ccddf52c47713913",
        "algorithm": "sha256"
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      "observations": {
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          "observed_date": "2026-09-07",
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          "digest": "a153d64e3bb5225b0c1d204cb68792f62cf87daaed7b3ff2ce9fbbdea4a9fe5e",
          "permalink": "https://gxplex.com/observations/astm-e2363#obs-2026-09-07-1",
          "asked_url": "https://www.astm.org/e2363-23.html",
          "answered_url": "https://store.astm.org/e2363-23.html"
        },
        "after": {
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          "observed_date": "2026-09-08",
          "sequence": 1,
          "digest": "38fca073725a8580e33f943a252f9793b151822380f626e9ccddf52c47713913",
          "permalink": "https://gxplex.com/observations/astm-e2363#obs-2026-09-08-1",
          "asked_url": "https://store.astm.org/e2363-23.html",
          "answered_url": "https://store.astm.org/e2363-23.html"
        }
      },
      "spans": {
        "state": "not-located",
        "comparison_verdict": "refused",
        "refused_by": "licence-restricted",
        "words_differing": null,
        "words_exact": null,
        "regions": null,
        "page": null
      },
      "candidate_state": "staged",
      "candidate": {
        "id": "astm-e2363-2026-09-08",
        "url": "https://gxplex.com/candidates/astm-e2363-2026-09-08/"
      },
      "verdict": {
        "placed": true,
        "state": "BLOCKED",
        "cause": "extractor-moved-across-the-pair",
        "rule_version": null,
        "statements": null,
        "read_from": "state/candidate-states.json"
      },
      "class": null,
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      "witness": {
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        "witness_address": null,
        "offered_as_witness_change": false,
        "confirmation_subject": null,
        "read_from": "state/triple-projection.json"
      },
      "means": "a consumer re-reads the source; nothing here says what the change means",
      "text_retained": true,
      "licence_class": "restricted",
      "quote_allowed": false,
      "snapshot_available": true,
      "rights_of": "astm-e2363",
      "source": {
        "id": "astm-e2363",
        "state": "tracked",
        "resolves_to": "https://gxplex.com/r/astm-e2363"
      },
      "observed_at": "2026-09-08",
      "observed_at_state": "recorded",
      "observed_at_read_from": "observations.after.observed_date",
      "distance": null,
      "distance_label": null,
      "distance_state": "not-a-signal"
    },
    {
      "id": "observation/astm-e2363/2026-10-28/1",
      "occurred_on": "2026-10-28",
      "identifiers": {
        "source_id": "astm-e2363",
        "publisher_identifier": null,
        "publisher_identifier_state": "not-recorded",
        "publisher_origin_host": null,
        "answered_url": "https://store.astm.org/e2363-23.html",
        "asked_url": "https://store.astm.org/e2363-23.html",
        "bundle": "https://gxplex.com/api/v1/observation-bundle/astm-e2363.json"
      },
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        "algorithm": "sha256"
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      "observations": {
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          "observed_date": "2026-10-27",
          "sequence": 1,
          "digest": "38fca073725a8580e33f943a252f9793b151822380f626e9ccddf52c47713913",
          "permalink": "https://gxplex.com/observations/astm-e2363#obs-2026-10-27-1",
          "asked_url": "https://store.astm.org/e2363-23.html",
          "answered_url": "https://store.astm.org/e2363-23.html"
        },
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          "permalink": "https://gxplex.com/observations/astm-e2363#obs-2026-10-28-1",
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          "answered_url": "https://store.astm.org/e2363-23.html"
        }
      },
      "spans": {
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        "refused_by": "licence-restricted",
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        "words_exact": null,
        "regions": null,
        "page": null
      },
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      "candidate": {
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        "url": "https://gxplex.com/candidates/astm-e2363-2026-10-28/"
      },
      "verdict": {
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        "state": "CONFIRMED-DERIVED",
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        "rule_version": "sha256:b6e855c8950bb7f5",
        "statements": null,
        "read_from": "state/candidate-states.json"
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      "basis": "DERIVED",
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        "witness_address": null,
        "offered_as_witness_change": false,
        "confirmation_subject": "instrument",
        "read_from": "state/triple-projection.json"
      },
      "means": "a consumer re-reads the source; nothing here says what the change means",
      "text_retained": true,
      "licence_class": "restricted",
      "quote_allowed": false,
      "snapshot_available": true,
      "rights_of": "astm-e2363",
      "source": {
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        "state": "tracked",
        "resolves_to": "https://gxplex.com/r/astm-e2363"
      },
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      "observed_at_state": "recorded",
      "observed_at_read_from": "observations.after.observed_date",
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      "distance_state": "not-a-signal"
    },
    {
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      "occurred_on": "2026-07-29",
      "identifiers": {
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        "publisher_identifier": null,
        "publisher_identifier_state": "not-recorded",
        "publisher_origin_host": null,
        "answered_url": null,
        "asked_url": "https://www.astm.org/e2500-25.html",
        "bundle": "https://gxplex.com/api/v1/observation-bundle/astm-e2500.json"
      },
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      "observations": {
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        }
      },
      "spans": {
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        "refused_by": "licence-restricted",
        "words_differing": null,
        "words_exact": null,
        "regions": null,
        "page": null
      },
      "candidate_state": "not-staged",
      "candidate": null,
      "verdict": null,
      "class": null,
      "basis": null,
      "witness": null,
      "means": "a consumer re-reads the source; nothing here says what the change means",
      "text_retained": true,
      "licence_class": "restricted",
      "quote_allowed": false,
      "snapshot_available": true,
      "rights_of": "astm-e2500",
      "source": {
        "id": "astm-e2500",
        "state": "tracked",
        "resolves_to": "https://gxplex.com/r/astm-e2500"
      },
      "observed_at": "2026-07-29",
      "observed_at_state": "recorded",
      "observed_at_read_from": "observations.after.observed_date",
      "distance": null,
      "distance_label": null,
      "distance_state": "not-a-signal"
    },
    {
      "id": "observation/astm-e2500/2026-09-08/1",
      "occurred_on": "2026-09-08",
      "identifiers": {
        "source_id": "astm-e2500",
        "publisher_identifier": null,
        "publisher_identifier_state": "not-recorded",
        "publisher_origin_host": null,
        "answered_url": "https://store.astm.org/e2500-25.html",
        "asked_url": "https://store.astm.org/e2500-25.html",
        "bundle": "https://gxplex.com/api/v1/observation-bundle/astm-e2500.json"
      },
      "digest": {
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        "algorithm": "sha256"
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      "observations": {
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          "observed_date": "2026-09-07",
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