eurlex: relabel to LicenseRef-EU-Reuse-Policy, report third-party (IASB) material (#71)

- eurlex: relabel to LicenseRef-EU-Reuse-Policy, report third-party (IASB) material (d006339fd5f8a157e4da378978423a7b36f329cc)

artifacts/source_findings.md

@@ -1927,3 +1927,57 @@ clause does not change a label here. Evidence in `data/wikinews/wikinews.license
 **Blockers** — none to merge. Open: lawyer on the 2.5 → 4.0 label and on E1; the 2 boundary
 documents; copyright pastes in news text (the audit's 100-document press-copying sample was
 not run); the markup residue above.
+
+## eurlex — relabelled to the EU reuse policy, third-party material reported (2026-10-06)
+
+**Investigated** — 2026-10-06 (October 2026 rights audit, polish-dynaword-v2 #57; lawyer
+question #56 B5; `rights_audit_2026-10/reports/citations.md`).
+
+**Verdict** — kept and relabelled, nothing dropped: 243,060 documents, 5,976,949,249
+characters, 2,378,055,718 tokens before and after. `CC-BY-4.0` becomes
+`LicenseRef-EU-Reuse-Policy` in the per-row `license` column, the registry and the card,
+by `src/clean_eurlex.py` (tested in `src/test_eurlex_contract.py`; all other columns are
+identical). The Polish Copyright Act Art. 4 basis is removed from the card.
+
+**License evidence** — verified, read 2026-10-06: the EUR-Lex legal notice
+(<https://eur-lex.europa.eu/content/legal-notice/legal-notice.html>, sha256 `7994b96f…`)
+bases the Commission's reuse policy on Decision 2011/833/EU and allows re-use of the legal
+documents published in EUR-Lex "unless otherwise specified". Its CC BY 4.0 grant covers
+only the website's editorial content, summaries of EU legislation and consolidated texts,
+so a corpus-wide CC-BY-4.0 label overstated the grant. Decision 2011/833/EU
+(<https://eur-lex.europa.eu/eli/dec/2011/833/oj/eng>, "In force", sha256 `1e867b79…`):
+Art. 4 reuse for commercial and non-commercial purposes, Art. 6(2) source
+acknowledgement and no distortion, Art. 2(2)(a)-(b) and recital 14 exclusions. Inferred:
+the Decision covers Commission documents, so acts of other institutions (Council,
+Parliament, ECB, EESC, CJEU) rest on the notice's general sentence. Evidence in
+`data/eurlex/eurlex.license-evidence.json`.
+
+**Third-party check** — report only (`python3 src/clean_eurlex.py --scan`):
+- 92 documents (74.1M characters, 1.24%) contain the IASB notice: reproduction allowed in
+  the EEA, all rights reserved outside it. They are 64 OJ acts adopting or amending
+  IAS/IFRS and 28 consolidated versions (20 of Regulation 1126/2008). The notice is the
+  "special conditions of use" the legal notice names for the International Accounting
+  Standards. All 92 matched lines and all 64 titles hand-checked. Two more documents have
+  a standard title line without the notice (67,283 characters) and were not counted.
+- 97 documents contain a (c) sign; 33 are third-party credits or short data citations
+  (photographs, maps, OECD, IHS Markit, McKinsey, Springer), 25 EU credits, 7 binary
+  garbage, 32 glyph noise or list markers. Labelled by reading the first occurrence in
+  each; the credited images are not in the text.
+- Header patterns: ECB acts 1,414 documents (1.00% of characters), EESC 5,154 (2.16%),
+  state aid `SA.nnnnn` 2,941 (1.26%), UN ECE regulations 253 (0.39%). These are EU-body or
+  Commission texts, not third-party under the notice; they matter only if those bodies'
+  reuse terms differ. The audit's rough shares (ECB ~4%, state aid ~2.5%) do not
+  reproduce with these patterns.
+- No large-scale reproduction of non-EU copyrighted works was found. Recall for third-party
+  text the patterns do not target is unknown.
+
+**Blockers** — none to merge. Open decision for the maintainer: keep the 92 IASB-notice
+documents (the notice reserves rights outside the EEA, and the Hub is not EEA-limited) or
+drop them. Ids are in `data/eurlex/eurlex.third-party-scan.json`.
+
+**Not established** — SpeakLeash's terms for `eurlex_corpus`; whether the ECB, EESC,
+Council, Parliament and the Court of Justice publish reuse terms of their own; the
+Publications Office's position on non-Commission documents (lawyer question, #56 B5).
+
+**Lesson** — a reuse policy is not a Creative Commons licence: copy the clause, not the
+label, and read what the grant covers before using its name.

data/eurlex/eurlex.license-evidence.json

@@ -0,0 +1,155 @@
+{
+  "source": "eurlex",
+  "status": "reviewed-reuse-policy-with-third-party-exclusions",
+  "reviewed_at": "2026-10-06",
+  "label": "LicenseRef-EU-Reuse-Policy",
+  "previous_label": "CC-BY-4.0",
+  "issue": "slayerlabs/polish-dynaword-v2#57 (lawyer question: #56 B5)",
+  "reuse_basis": {
+    "documents": [
+      {
+        "role": "EUR-Lex legal notice",
+        "url": "https://eur-lex.europa.eu/content/legal-notice/legal-notice.html",
+        "retrieved_at": "2026-10-06T01:37+02:00",
+        "bytes": 135286,
+        "sha256": "7994b96f400239cda9061a64f781c75cf927637cf29320402a4ffce6d71f3857",
+        "note": "sha256 of the HTML as fetched; the page footer carries the current year, so a later fetch hashes differently",
+        "clauses": {
+          "reuse_policy": "Copyright notice: 'The Commission's document reuse policy is based on Decision 2011/833/EU.' Unless otherwise specified, the legal documents published in EUR-Lex may be re-used for commercial or non-commercial purposes.",
+          "special_conditions": "Copyright notice: 'Some documents, like the International Accounting Standards, may be subject to special conditions of use'; they are mentioned in the respective Official Journal/document.",
+          "cc_by_4_scope": "Copyright notice: CC BY 4.0 covers the editorial content of the website, the summaries of EU legislation and the consolidated texts, with source acknowledgement and indication of changes.",
+          "third_party": "Copyright notice: additional rights may need clearing where content includes third-party works; content not owned by the EU may need permission from the rights holders.",
+          "industrial_property": "Copyright notice: software or documents covered by industrial property rights (patents, trademarks, registered designs, logos, names) are excluded from the reuse policy.",
+          "metadata": "Copyright notice: EUR-Lex metadata is CC0 1.0 (not used here)."
+        }
+      },
+      {
+        "role": "Commission Decision 2011/833/EU of 12 December 2011 on the reuse of Commission documents",
+        "url": "https://eur-lex.europa.eu/eli/dec/2011/833/oj/eng",
+        "retrieved_at": "2026-10-06T01:37+02:00",
+        "bytes": 314528,
+        "sha256": "1e867b79d32ed7078175705668e48f64c2850fa15a26ff761f4dc080514e69e8",
+        "status_on_page": "In force",
+        "clauses": {
+          "art_1_2_1_scope": "Documents held by the Commission, or on its behalf by the Publications Office, produced by the Commission or entities acting on its behalf.",
+          "recital_14": "The Decision does not apply to documents the Commission cannot allow to be reused, e.g. third-party intellectual property rights or documents received from the other Institutions.",
+          "art_2_2_a": "Not applicable to software or documents covered by industrial property rights.",
+          "art_2_2_b": "Not applicable to documents the Commission cannot license in view of third-party intellectual property rights.",
+          "art_4": "General principle: documents available for reuse for commercial or non-commercial purposes under Art. 6, without charge, without individual application.",
+          "art_6_2": "Permitted conditions: (a) acknowledge the source, (b) do not distort the original meaning or message, (c) non-liability of the Commission."
+        }
+      }
+    ],
+    "not_relied_on": "Polish Copyright Act Art. 4: it concerns Polish official documents, not EU acts. The v0.2.5 card cited it; removed.",
+    "limit": "Decision 2011/833/EU applies to Commission documents. Acts of other institutions (Council, Parliament, ECB, EESC, CJEU) in the corpus rest on the notice's general sentence about legal documents published in EUR-Lex alone. This is an inference from the notice wording (Inferred), not a statement by the Publications Office."
+  },
+  "chain_of_title": [
+    "EU institutions (authors) -> Publications Office EUR-Lex (publisher; reuse policy above)",
+    "-> SpeakLeash speakleash-ds-pub key eurlex_corpus (aggregator; its terms for this corpus were not checked)",
+    "-> SlayerLab/polish-dynaword eurlex (this dataset)"
+  ],
+  "parquet": {
+    "v0_2_5_sha256": "5f151d57c20103f5488fd7f1b6c108311b648e4c7ed1ff02ef7a376be5c92f04",
+    "v0_2_5_bytes": 1691883292,
+    "after_relabel_sha256": "44cc0dfb0c73c1462635cebc23ed7c1f46e6c509e57e118477a8cfc7cc74c84c",
+    "rows": 243060,
+    "chars": 5976949249,
+    "tokens": 2378055718,
+    "change": "per-row license column CC-BY-4.0 -> LicenseRef-EU-Reuse-Policy (src/clean_eurlex.py); all other columns identical, no row dropped"
+  },
+  "document_kinds_heuristic": {
+    "method": "first 200 characters of each document",
+    "counts": {
+      "oj_c": 102032,
+      "oj_l": 52413,
+      "eurlex_page": 24146,
+      "court_of_justice_celex_start": 21846,
+      "consolidated": 17229,
+      "other": 13712,
+      "court_of_justice_text": 6155,
+      "immc": 3521,
+      "commission_head": 2006
+    },
+    "note": "17,229 consolidated texts (29.0% of characters) are within the notice's CC BY 4.0 grant as well; the single corpus label does not claim CC BY 4.0 for the rest"
+  },
+  "third_party_check": {
+    "report_only": true,
+    "dropped": 0,
+    "scan": "data/eurlex/eurlex.third-party-scan.json (src/clean_eurlex.py --scan)",
+    "iasb_notice": {
+      "documents": 92,
+      "characters": 74060114,
+      "share_of_characters": 0.01239,
+      "what": "Documents carrying the IASB notice (reproduction allowed within the EEA, all rights reserved outside it): 64 OJ acts adopting or amending IAS/IFRS and 28 consolidated versions (20 of Regulation 1126/2008, 6 of 1725/2003, 1 of 475/2012, 1 of 1361/2014). The notice sits in the reproduced standards; the rest of each document is EU text.",
+      "hand_check": "All 92 matched lines read: each is the IASB notice (11 distinct line forms, including whitespace and quote-mark variants). All 64 non-consolidated titles concern IAS/IFRS or accounting.",
+      "cross_check": "2 further documents have a standard-title line without the notice (eurlex_1848316, eurlex_2024404; 67,283 characters): not counted.",
+      "mentions_without_notice": "6 documents name the IFRS Foundation or IASC Foundation in running text only (funding decisions, reports); not counted."
+    },
+    "copyright_sign": {
+      "documents": 97,
+      "hand_labelled_third_party_credit_or_citation": [
+        "eurlex_1804281",
+        "eurlex_1808068",
+        "eurlex_1809226",
+        "eurlex_1810394",
+        "eurlex_1813244",
+        "eurlex_1815292",
+        "eurlex_1821803",
+        "eurlex_1823205",
+        "eurlex_1823678",
+        "eurlex_1823728",
+        "eurlex_1852144",
+        "eurlex_1852490",
+        "eurlex_1865032",
+        "eurlex_1869305",
+        "eurlex_1888527",
+        "eurlex_1900544",
+        "eurlex_1917072",
+        "eurlex_1937895",
+        "eurlex_1944848",
+        "eurlex_1953473",
+        "eurlex_1973899",
+        "eurlex_1976278",
+        "eurlex_2002307",
+        "eurlex_2006693",
+        "eurlex_2014867",
+        "eurlex_2018301",
+        "eurlex_2018302",
+        "eurlex_2028817",
+        "eurlex_2028818",
+        "eurlex_2032137",
+        "eurlex_2033606",
+        "eurlex_2042094",
+        "eurlex_2045379"
+      ],
+      "hand_labelled_third_party_count": 33,
+      "other": "by first occurrence: 25 EU-owned credits (Commission, European Court of Auditors, ECB symbol, EUPL), 7 binary-garbage documents, and 32 glyph noise, list markers or trademark symbols",
+      "binary_garbage_documents": [
+        "eurlex_1995131",
+        "eurlex_2016612",
+        "eurlex_2025049",
+        "eurlex_2025668",
+        "eurlex_2025821",
+        "eurlex_2026102",
+        "eurlex_2026315"
+      ],
+      "note": "The credit lines name photographs, maps and data sources; the credited images are not in the text. The excerpts are short data citations (OECD, IEA, IHS Markit, CRU, McKinsey, Springer, IOTF)."
+    },
+    "author_header_categories": {
+      "method": "regex on the first 3000 characters; counts in the scan file",
+      "ecb_act": 1414,
+      "eesc": 5154,
+      "state_aid_sa": 2941,
+      "un_ece_regulation": 253,
+      "note": "Not third-party under the notice by themselves: they are texts of EU bodies or Commission notices. They matter only if those bodies' reuse terms differ (not checked). The audit's rough shares (ECB ~4%, state aid ~2.5%) do not reproduce with these patterns."
+    },
+    "not_found": "No large-scale reproduction of non-EU copyrighted works was found by these patterns. Recall for third-party text they do not target is unknown (Inferred)."
+  },
+  "not_checked": [
+    "SpeakLeash's terms for eurlex_corpus",
+    "whether the ECB, EESC, Council, Parliament and the Court of Justice publish reuse terms of their own, and whether they differ from the notice",
+    "the 'Unless otherwise specified' clause per document: only the IASB notice and the (c) sign were searched for",
+    "Official Journal documents quoting national or private texts in annexes (e.g. UN ECE regulations, 253 documents by header; standards bodies' texts)",
+    "the Publications Office's position on non-Commission documents (a lawyer question, #56 B5)"
+  ]
+}

data/eurlex/eurlex.md

@@ -6,15 +6,15 @@ EUR-Lex (EU legal acts, Polish)
 - **Source (upstream):** https://eur-lex.europa.eu
 - **Domain:** legal
 - **Language:** Polish (pl)
-- **License:** `CC-BY-4.0`
+- **License:** `LicenseRef-EU-Reuse-Policy`
 - **Created (range):** 1952-01-01, 2024-12-31
 - **Added:** 2026-07-02
 
 ## Licensing — traceable basis
-EU documents reusable under Commission Decision 2011/833/EU; normative acts fall outside copyright (PL art. 4 pr. aut.). Reuse authorised with source acknowledgement.
+The EUR-Lex legal notice (https://eur-lex.europa.eu/content/legal-notice/legal-notice.html, read 2026-10-06) says the Commission's document reuse policy is based on Decision 2011/833/EU and that, unless otherwise specified, the legal documents published in EUR-Lex may be re-used for commercial or non-commercial purposes. Decision 2011/833/EU (https://eur-lex.europa.eu/eli/dec/2011/833/oj/eng) Art. 4 makes documents available for reuse without charge or application; Art. 6(2) allows the conditions of source acknowledgement and no distortion of the original meaning. The notice's Creative Commons BY 4.0 grant covers only EUR-Lex editorial content, summaries of EU legislation and consolidated texts, not the acts as such, so the corpus is not labelled CC BY 4.0. This is a reuse permission, not an exclusion from copyright: Art. 4 of the Polish Copyright Act does not apply to EU acts and is not relied on.
 
 ## Provenance
-Pulled from SpeakLeash's public redistribution (`speakleash-ds-pub`, key `eurlex_corpus`) of the upstream source above. SpeakLeash credited as intermediate aggregator; upstream license/attribution preserved.
+Pulled from SpeakLeash's public redistribution (`speakleash-ds-pub`, key `eurlex_corpus`) of EUR-Lex. SpeakLeash is an intermediate aggregator: its own terms for the corpus were not checked, and the upstream EUR-Lex terms above are the basis. Documents are Polish-language EUR-Lex texts: Official Journal L and C items, consolidated texts, Court of Justice documents and Commission documents.
 
 ## Statistics
 | documents | characters | tokens (tiktoken proxy) |
@@ -25,10 +25,13 @@ Pulled from SpeakLeash's public redistribution (`speakleash-ds-pub`, key `eurlex
 ## Per-document license metadata
 | license | documents |
 |---|---:|
-| `CC-BY-4.0` | 243,060 |
+| `LicenseRef-EU-Reuse-Policy` | 243,060 |
 
 Author metadata present for **0** documents. Empty values mean the upstream record did not expose a machine-readable author field.
 
+## Legal scope note
+Third-party material is not covered. The notice and Decision 2011/833/EU Art. 2(2)(a)-(b) exclude documents covered by industrial property rights or third-party intellectual property rights, and the notice says the International Accounting Standards may carry special conditions of use. 92 documents (74.1M characters, 1.24%) contain the IASB notice allowing reproduction within the EEA and reserving all rights outside it: 64 Official Journal acts adopting or amending IAS/IFRS and 28 consolidated versions (Regulations 1126/2008, 1725/2003, 475/2012, 1361/2014). 97 documents contain a (c) sign; 33 of them are third-party credits or short data citations (photographs, maps, OECD, IHS Markit, McKinsey, Springer), the rest EU credits or extraction noise. Nothing was removed. Ids and counts are in `eurlex.third-party-scan.json` and `eurlex.license-evidence.json`; recall for third-party text the patterns do not target is unknown. Decision 2011/833/EU itself covers documents held by the Commission or the Publications Office; acts of other institutions (Council, Parliament, ECB, EESC, CJEU) rest on the notice's general sentence alone, and whether those bodies publish their own reuse terms was not checked.
+
 Statistics were recomputed directly from the released parquet file.
 
 ## Filters applied (build_dynaword.py)

data/eurlex/eurlex.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:5f151d57c20103f5488fd7f1b6c108311b648e4c7ed1ff02ef7a376be5c92f04
-size 1691883292
+oid sha256:44cc0dfb0c73c1462635cebc23ed7c1f46e6c509e57e118477a8cfc7cc74c84c
+size 1691885842

data/eurlex/eurlex.stats.json

@@ -8,9 +8,9 @@
   "chars": 5976949249,
   "tokens": 2378055718,
   "licenses": {
-    "CC-BY-4.0": 243060
+    "LicenseRef-EU-Reuse-Policy": 243060
   },
   "authors_with_value": 0,
-  "license": "CC-BY-4.0",
+  "license": "LicenseRef-EU-Reuse-Policy",
   "stats_recomputed_from_parquet": true
 }

data/eurlex/eurlex.third-party-scan.json

@@ -0,0 +1,142 @@
+{
+  "rows": 243060,
+  "chars": 5976949249,
+  "rules": {
+    "iasb_notice": {
+      "docs": 92,
+      "chars": 74060114,
+      "pattern": "zastrze[żz]one\\s+poza\\s+EOG",
+      "window": "whole text",
+      "share_of_chars": 0.01239
+    },
+    "copyright_sign": {
+      "docs": 97,
+      "chars": 31335172,
+      "pattern": "©",
+      "window": "whole text",
+      "share_of_chars": 0.00524
+    },
+    "ecb_act": {
+      "docs": 1414,
+      "chars": 59885106,
+      "pattern": "\\((EBC|CON)/\\d{4}/\\d+\\)",
+      "window": "first 3000 characters",
+      "share_of_chars": 0.01002
+    },
+    "eesc": {
+      "docs": 5154,
+      "chars": 129142031,
+      "pattern": "EESC[-_ ]\\d{4}|Opinia Europejskiego Komitetu Ekonomiczno-Społecznego|Europejski Komitet Ekonomiczno-Społeczny",
+      "window": "first 3000 characters",
+      "share_of_chars": 0.02161
+    },
+    "state_aid_sa": {
+      "docs": 2941,
+      "chars": 75399658,
+      "pattern": "\\bSA\\.\\d{4,6}\\b",
+      "window": "first 3000 characters",
+      "share_of_chars": 0.01262
+    },
+    "un_ece_regulation": {
+      "docs": 253,
+      "chars": 23115516,
+      "pattern": "Regulamin\\w* nr \\d+[^\\n]{0,80}(Europejskiej Komisji Gospodarczej|EKG ONZ)",
+      "window": "first 3000 characters",
+      "share_of_chars": 0.00387
+    }
+  },
+  "iasb_notice_ids": [
+    "eurlex_1838756",
+    "eurlex_1849634",
+    "eurlex_1858966",
+    "eurlex_1858967",
+    "eurlex_1858968",
+    "eurlex_1861433",
+    "eurlex_1861571",
+    "eurlex_1861798",
+    "eurlex_1864768",
+    "eurlex_1865459",
+    "eurlex_1867520",
+    "eurlex_1873710",
+    "eurlex_1875966",
+    "eurlex_1877208",
+    "eurlex_1877852",
+    "eurlex_1883669",
+    "eurlex_1883677",
+    "eurlex_1885399",
+    "eurlex_1888360",
+    "eurlex_1888463",
+    "eurlex_1892388",
+    "eurlex_1893873",
+    "eurlex_1894940",
+    "eurlex_1898488",
+    "eurlex_1899031",
+    "eurlex_1901186",
+    "eurlex_1901192",
+    "eurlex_1901197",
+    "eurlex_1901204",
+    "eurlex_1901211",
+    "eurlex_1901726",
+    "eurlex_1906344",
+    "eurlex_1907279",
+    "eurlex_1908275",
+    "eurlex_1908290",
+    "eurlex_1908308",
+    "eurlex_1908315",
+    "eurlex_1908324",
+    "eurlex_1908528",
+    "eurlex_1910176",
+    "eurlex_1910340",
+    "eurlex_1911589",
+    "eurlex_1913515",
+    "eurlex_1914195",
+    "eurlex_1919078",
+    "eurlex_1919129",
+    "eurlex_1919130",
+    "eurlex_1919550",
+    "eurlex_1919710",
+    "eurlex_1921635",
+    "eurlex_1921640",
+    "eurlex_1929891",
+    "eurlex_1930795",
+    "eurlex_1930859",
+    "eurlex_1931269",
+    "eurlex_1931985",
+    "eurlex_1932248",
+    "eurlex_1939819",
+    "eurlex_1939820",
+    "eurlex_1939858",
+    "eurlex_1940236",
+    "eurlex_1940265",
+    "eurlex_1942295",
+    "eurlex_1943238",
+    "eurlex_1944058",
+    "eurlex_1947662",
+    "eurlex_1947821",
+    "eurlex_1947822",
+    "eurlex_1953178",
+    "eurlex_1955954",
+    "eurlex_1960818",
+    "eurlex_1960827",
+    "eurlex_1962574",
+    "eurlex_1962666",
+    "eurlex_1963180",
+    "eurlex_1965597",
+    "eurlex_1965598",
+    "eurlex_1965758",
+    "eurlex_1967466",
+    "eurlex_1968555",
+    "eurlex_1972398",
+    "eurlex_1979642",
+    "eurlex_1988175",
+    "eurlex_1988286",
+    "eurlex_1995439",
+    "eurlex_1995808",
+    "eurlex_2010160",
+    "eurlex_2012411",
+    "eurlex_2026447",
+    "eurlex_2027900",
+    "eurlex_2031043",
+    "eurlex_2039084"
+  ]
+}

src/clean_eurlex.py

@@ -0,0 +1,124 @@
+#!/usr/bin/env python3
+"""eurlex rights-audit actions (slayerlabs/polish-dynaword-v2#57).
+
+relabel (default): the v0.2.5 release labelled every row `CC-BY-4.0`. The EUR-Lex legal
+notice licenses under CC BY 4.0 only "the editorial content of this website, the summaries
+of EU legislation and the consolidated texts"; the legal documents themselves are reusable
+under the Commission's reuse policy (Decision 2011/833/EU). Rewrites the per-row `license`
+column to `LicenseRef-EU-Reuse-Policy` and recomputes `eurlex.stats.json` with
+`normalize_schema.normalize_one`. No row is dropped or edited. Raises, and leaves the
+parquet as it was, if any row carries a licence other than the old or the new label.
+
+--scan: report-only count of documents the notice's third-party / special-conditions
+exclusions may reach. Writes `data/eurlex/eurlex.third-party-scan.json`. Nothing is dropped.
+The regexes are heuristics: counts are lower bounds on what they target, and recall for
+third-party text they do not target is unknown.
+
+Restore the v0.2.5 input before a rerun (sha256 5f151d57c20103f5488fd7f1b6c108311b648e4c7ed1ff02ef7a376be5c92f04):
+  git checkout 3bab9f9 -- data/eurlex/eurlex.parquet
+  python3 src/clean_eurlex.py
+"""
+from __future__ import annotations
+
+import argparse
+import json
+import re
+import sys
+from pathlib import Path
+
+import pyarrow as pa
+import pyarrow.compute as pc
+import pyarrow.parquet as pq
+
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+from normalize_schema import normalize_one  # noqa: E402
+
+SOURCE = "eurlex"
+ROOT = Path(__file__).resolve().parents[1]
+PARQUET = ROOT / "data" / SOURCE / f"{SOURCE}.parquet"
+SCAN_JSON = ROOT / "data" / SOURCE / f"{SOURCE}.third-party-scan.json"
+OLD_LICENSE, NEW_LICENSE = "CC-BY-4.0", "LicenseRef-EU-Reuse-Policy"
+BATCH = 8192  # same as normalize_schema, so the row groups match
+
+# Whole-text rule. The IASB's notice in the IAS/IFRS adopting acts and their consolidated
+# versions: reproduction allowed in the EEA, "all rights reserved outside the EEA" (worded
+# "Wszystkie istniejące prawa [są] zastrzeżone poza EOG" or "Wszelkie prawa zastrzeżone poza EOG").
+WHOLE_TEXT_RULES = {
+    "iasb_notice": re.compile(r"zastrze[żz]one\s+poza\s+EOG"),
+    "copyright_sign": re.compile("©"),
+}
+# Header-window rules: documents whose first HEADER characters mark an author other than the Commission.
+HEADER = 3000
+HEADER_RULES = {
+    "ecb_act": re.compile(r"\((EBC|CON)/\d{4}/\d+\)"),
+    "eesc": re.compile(r"EESC[-_ ]\d{4}|Opinia Europejskiego Komitetu Ekonomiczno-Społecznego"
+                       r"|Europejski Komitet Ekonomiczno-Społeczny"),
+    "state_aid_sa": re.compile(r"\bSA\.\d{4,6}\b"),
+    "un_ece_regulation": re.compile(r"Regulamin\w* nr \d+[^\n]{0,80}(Europejskiej Komisji Gospodarczej|EKG ONZ)", re.I),
+}
+
+
+def relabel(path: Path = PARQUET, old: str = OLD_LICENSE, new: str = NEW_LICENSE) -> dict:
+    """Rewrite `license` of every row to `new`, then recompute stats. Returns the stats."""
+    tmp = path.with_suffix(".parquet.tmp")
+    pf = pq.ParquetFile(path)
+    schema = pf.schema_arrow
+    index = schema.get_field_index("license")
+    writer = pq.ParquetWriter(tmp, schema, compression="zstd")
+    try:
+        for batch in pf.iter_batches(batch_size=BATCH):
+            tbl = pa.Table.from_batches([batch])
+            found = set(pc.unique(tbl["license"]).to_pylist())
+            if not found <= {old, new}:
+                raise ValueError(f"{path.name}: unexpected licence(s) {sorted(map(str, found - {old, new}))}")
+            tbl = tbl.set_column(index, schema.field(index), pa.array([new] * tbl.num_rows, type=pa.string()))
+            writer.write_table(tbl)
+        writer.close()
+        tmp.replace(path)
+    except BaseException:
+        writer.close()
+        tmp.unlink(missing_ok=True)
+        raise
+    return normalize_one(path)
+
+
+def scan(path: Path = PARQUET) -> dict:
+    """Count documents matching each rule. Report-only."""
+    pf = pq.ParquetFile(path)
+    rules = {**{k: (v, False) for k, v in WHOLE_TEXT_RULES.items()}, **{k: (v, True) for k, v in HEADER_RULES.items()}}
+    out = {k: {"docs": 0, "chars": 0} for k in rules}
+    iasb_ids: list[str] = []
+    rows = chars = 0
+    for batch in pf.iter_batches(batch_size=BATCH, columns=["id", "text"]):
+        for doc_id, text in zip(batch["id"].to_pylist(), batch["text"].to_pylist()):
+            rows += 1
+            chars += len(text)
+            for name, (pattern, header_only) in rules.items():
+                if pattern.search(text[:HEADER] if header_only else text):
+                    out[name]["docs"] += 1
+                    out[name]["chars"] += len(text)
+                    if name == "iasb_notice":
+                        iasb_ids.append(doc_id)
+    for name, (pattern, header_only) in rules.items():
+        out[name]["pattern"] = pattern.pattern
+        out[name]["window"] = f"first {HEADER} characters" if header_only else "whole text"
+        out[name]["share_of_chars"] = round(out[name]["chars"] / chars, 5)
+    return {"rows": rows, "chars": chars, "rules": out, "iasb_notice_ids": sorted(iasb_ids)}
+
+
+def main() -> None:
+    ap = argparse.ArgumentParser(description=__doc__.split("\n")[0])
+    ap.add_argument("--scan", action="store_true", help="write the report-only third-party scan instead of relabelling")
+    ap.add_argument("--parquet", type=Path, default=PARQUET)
+    args = ap.parse_args()
+    if args.scan:
+        result = scan(args.parquet)
+        SCAN_JSON.write_text(json.dumps(result, ensure_ascii=False, indent=2) + "\n")
+        print(json.dumps({k: v for k, v in result.items() if k != "iasb_notice_ids"}, ensure_ascii=False, indent=2))
+    else:
+        stats = relabel(args.parquet)
+        print(f"{SOURCE}: {stats['kept']:,} docs | {stats['tokens']:,} tokens | licences {stats['licenses']}")
+
+
+if __name__ == "__main__":
+    main()

src/sources.py

@@ -207,11 +207,45 @@ SOURCES = {
         "release": "0.2.0",
         "speakleash_key": "eurlex_corpus",
         "pretty": "EUR-Lex (EU legal acts, Polish)",
-        "license": "CC-BY-4.0",
-        "license_spdx": "CC-BY-4.0",
-        "traceable": "EU documents reusable under Commission Decision 2011/833/EU; "
-                     "normative acts fall outside copyright (PL art. 4 pr. aut.). "
-                     "Reuse authorised with source acknowledgement.",
+        "license": "LicenseRef-EU-Reuse-Policy",
+        "license_spdx": "LicenseRef-EU-Reuse-Policy",
+        "traceable": "The EUR-Lex legal notice (https://eur-lex.europa.eu/content/legal-notice/"
+                     "legal-notice.html, read 2026-10-06) says the Commission's document reuse "
+                     "policy is based on Decision 2011/833/EU and that, unless otherwise "
+                     "specified, the legal documents published in EUR-Lex may be re-used for "
+                     "commercial or non-commercial purposes. Decision 2011/833/EU "
+                     "(https://eur-lex.europa.eu/eli/dec/2011/833/oj/eng) Art. 4 makes documents "
+                     "available for reuse without charge or application; Art. 6(2) allows the "
+                     "conditions of source acknowledgement and no distortion of the original "
+                     "meaning. The notice's Creative Commons BY 4.0 grant covers only EUR-Lex "
+                     "editorial content, summaries of EU legislation and consolidated texts, not "
+                     "the acts as such, so the corpus is not labelled CC BY 4.0. This is a reuse "
+                     "permission, not an exclusion from copyright: Art. 4 of the Polish Copyright "
+                     "Act does not apply to EU acts and is not relied on.",
+        "provenance": "Pulled from SpeakLeash's public redistribution (`speakleash-ds-pub`, key "
+                      "`eurlex_corpus`) of EUR-Lex. SpeakLeash is an intermediate aggregator: its "
+                      "own terms for the corpus were not checked, and the upstream EUR-Lex terms "
+                      "above are the basis. Documents are Polish-language EUR-Lex texts: Official "
+                      "Journal L and C items, consolidated texts, Court of Justice documents and "
+                      "Commission documents.",
+        "legal_note": "Third-party material is not covered. The notice and Decision 2011/833/EU "
+                      "Art. 2(2)(a)-(b) exclude documents covered by industrial property rights "
+                      "or third-party intellectual property rights, and the notice says the "
+                      "International Accounting Standards may carry special conditions of use. "
+                      "92 documents (74.1M characters, 1.24%) contain the IASB notice allowing "
+                      "reproduction within the EEA and reserving all rights outside it: 64 "
+                      "Official Journal acts adopting or amending IAS/IFRS and 28 consolidated "
+                      "versions (Regulations 1126/2008, 1725/2003, 475/2012, 1361/2014). 97 "
+                      "documents contain a (c) sign; 33 of them are third-party credits or short "
+                      "data citations (photographs, maps, OECD, IHS Markit, McKinsey, Springer), "
+                      "the rest EU credits or extraction noise. Nothing was removed. Ids and "
+                      "counts are in `eurlex.third-party-scan.json` and "
+                      "`eurlex.license-evidence.json`; recall for third-party text the patterns "
+                      "do not target is unknown. Decision 2011/833/EU itself covers documents "
+                      "held by the Commission or the Publications Office; acts of other "
+                      "institutions (Council, Parliament, ECB, EESC, CJEU) rest on the notice's "
+                      "general sentence alone, and whether those bodies publish their own reuse "
+                      "terms was not checked.",
         "upstream": "https://eur-lex.europa.eu",
         "domain": "legal",
         "created": "1952-01-01, 2024-12-31",

src/test_eurlex_contract.py

@@ -0,0 +1,207 @@
+"""Contract tests for the eurlex licence relabel (slayerlabs/polish-dynaword-v2#57)."""
+from __future__ import annotations
+
+import hashlib
+import json
+import sys
+from pathlib import Path
+
+import pyarrow as pa
+import pyarrow.parquet as pq
+import pytest
+
+sys.path.insert(0, str(Path(__file__).resolve().parent))
+
+import make_docs
+from clean_eurlex import (
+    HEADER,
+    HEADER_RULES,
+    NEW_LICENSE,
+    OLD_LICENSE,
+    WHOLE_TEXT_RULES,
+    relabel,
+    scan,
+)
+from normalize_schema import SCHEMA, string_len_sum
+from sources import SOURCES
+
+ROOT = Path(__file__).resolve().parents[1]
+DATA = ROOT / "data" / "eurlex"
+CFG = SOURCES["eurlex"]
+
+
+def write_parquet(path: Path, rows: list[dict]) -> Path:
+    path.parent.mkdir(parents=True, exist_ok=True)
+    pq.write_table(pa.Table.from_pylist(rows, schema=SCHEMA), path, compression="zstd")
+    return path
+
+
+def row(i: int, text: str = "Rozporządzenie. " * 20, license: str = OLD_LICENSE) -> dict:
+    return {"id": f"eurlex_{i}", "text": text, "source": "eurlex", "added": "2026-06-15",
+            "created": "1952-01-01, 2024-12-31", "token_count": 7 + i, "license": license, "author": ""}
+
+
+# normalize_one reads the registry entry by directory name, so the fixture lives in <tmp>/eurlex/.
+@pytest.fixture
+def parquet(tmp_path):
+    return write_parquet(tmp_path / "eurlex" / "eurlex.parquet", [row(0), row(1), row(2, license=NEW_LICENSE)])
+
+
+def test_relabel_changes_only_the_license_column(parquet):
+    before = pq.read_table(parquet)
+    stats = relabel(parquet)
+    after = pq.read_table(parquet)
+
+    assert after.schema == before.schema
+    assert after["license"].to_pylist() == [NEW_LICENSE] * 3
+    for name in before.schema.names:
+        if name != "license":
+            assert after[name].equals(before[name]), name
+    assert stats["kept"] == 3
+    assert stats["licenses"] == {NEW_LICENSE: 3}
+    assert stats["license"] == NEW_LICENSE == CFG["license"]
+    assert stats["chars"] == string_len_sum(before["text"])
+    assert stats["tokens"] == sum(before["token_count"].to_pylist())
+    assert json.loads(parquet.with_name("eurlex.stats.json").read_text()) == stats
+    assert not parquet.with_suffix(".parquet.tmp").exists()
+
+
+def test_relabel_is_idempotent(parquet):
+    first = relabel(parquet)
+    assert relabel(parquet) == first
+
+
+def test_relabel_refuses_an_unexpected_license_and_leaves_the_file_alone(tmp_path):
+    path = write_parquet(tmp_path / "eurlex" / "eurlex.parquet", [row(0), row(1, license="CC-BY-SA-4.0")])
+    digest = hashlib.sha256(path.read_bytes()).hexdigest()
+    with pytest.raises(ValueError, match="CC-BY-SA-4.0"):
+        relabel(path)
+    assert hashlib.sha256(path.read_bytes()).hexdigest() == digest
+    assert not path.with_suffix(".parquet.tmp").exists()
+
+
+# The three wordings of the IASB notice in the corpus (Polish text of the OJ), and text that must not match.
+IASB_NOTICES = [
+    "Powielanie dozwolone w obrębie Europejskiego Obszaru Gospodarczego. Wszystkie istniejące prawa są "
+    "zastrzeżone poza EOG, z wyjątkiem prawa do powielania na użytek własny lub w innych uczciwych celach.",
+    "Powielanie dozwolone w Europejskim Obszarze Gospodarczym. Wszystkie istniejące prawa zastrzeżone poza EOG, "
+    "za wyjątkiem prawa do powielania w celach osobistych lub innych uczciwych celach.",
+    "Reprodukowanie dozwolone na terenie Europejskiego Obszaru Gospodarczego. Wszelkie prawa zastrzeżone poza EOG, "
+    "z wyjątkiem prawa do powielania dla własnego użytku osobistego.",
+    "Wszystkie istniejące prawa są zastrzeżone poza EOG, z wyjątkiem prawa do powielania",
+]
+
+
+@pytest.mark.parametrize("text", IASB_NOTICES)
+def test_iasb_rule_matches_the_notice_wordings(text):
+    assert WHOLE_TEXT_RULES["iasb_notice"].search(f"Standard rachunkowości 1\n{text}\nStandard 2")
+
+
+@pytest.mark.parametrize("text", [
+    "Wszelkie prawa zastrzeżone.",
+    "Państwa trzecie zastrzegają poza EOG swoje prawa.",
+    "Fundacja IFRS finansuje Komitet.",
+])
+def test_iasb_rule_ignores_other_text(text):
+    assert not WHOLE_TEXT_RULES["iasb_notice"].search(text)
+
+
+def test_header_rules_look_only_at_the_header():
+    ecb = "Opinia Europejskiego Banku Centralnego (CON/2012/45) w sprawie"
+    assert HEADER_RULES["ecb_act"].search(ecb)
+    assert HEADER_RULES["state_aid_sa"].search("Pomoc państwa SA.34567 (2012/N)")
+    assert HEADER_RULES["un_ece_regulation"].search("Regulamin nr 117 Europejskiej Komisji Gospodarczej Organizacji")
+    assert not HEADER_RULES["ecb_act"].search("Rozporządzenie Rady")
+
+
+def test_scan_counts_documents_per_rule(tmp_path):
+    late = "x" * (HEADER + 10) + " (CON/2012/45)"
+    path = write_parquet(tmp_path / "eurlex" / "eurlex.parquet", [
+        row(0, text=IASB_NOTICES[0] + " " * 150),
+        row(1, text="Zdjęcie © Adobe Stock. " + "a" * 200),
+        row(2, text="Opinia (CON/2012/45) " + "b" * 200),
+        row(3, text=late),  # header rules stop at HEADER characters
+        row(4),
+    ])
+    result = scan(path)
+    rules = result["rules"]
+    assert result["rows"] == 5
+    assert result["chars"] == sum(len(t) for t in pq.read_table(path)["text"].to_pylist())
+    assert result["iasb_notice_ids"] == ["eurlex_0"]
+    assert (rules["iasb_notice"]["docs"], rules["copyright_sign"]["docs"], rules["ecb_act"]["docs"]) == (1, 1, 1)
+    assert rules["state_aid_sa"]["docs"] == 0
+    assert rules["iasb_notice"]["chars"] == len(pq.read_table(path)["text"][0].as_py())
+
+
+def test_registry_label_and_basis():
+    assert CFG["license"] == CFG["license_spdx"] == NEW_LICENSE
+    assert CFG["release"] == "0.2.0"
+    basis = CFG["traceable"]
+    assert "2011/833" in basis and "legal-notice" in basis
+    assert "not labelled CC BY 4.0" in basis
+    # Art. 4 of the Polish Copyright Act is named only to say it is not relied on
+    assert "does not apply to EU acts and is not relied on" in basis
+    assert "third-party" in CFG["legal_note"].lower()
+
+
+def test_release_artifact_matches_label_stats_and_evidence():
+    path = DATA / "eurlex.parquet"
+    pf = pq.ParquetFile(path)
+    stats = json.loads((DATA / "eurlex.stats.json").read_text())
+    evidence = json.loads((DATA / "eurlex.license-evidence.json").read_text())
+
+    assert pf.schema_arrow.names == SCHEMA.names
+    rows = chars = tokens = 0
+    licenses, sources = set(), set()
+    for group in range(pf.num_row_groups):
+        tbl = pf.read_row_group(group)
+        rows += tbl.num_rows
+        chars += string_len_sum(tbl["text"])
+        tokens += sum(tbl["token_count"].to_pylist())
+        licenses |= set(tbl["license"].to_pylist())
+        sources |= set(tbl["source"].to_pylist())
+    assert licenses == {CFG["license"]}
+    assert sources == {"eurlex"}
+    assert (rows, chars, tokens) == (stats["kept"], stats["chars"], stats["tokens"])
+    assert stats["licenses"] == {CFG["license"]: rows} and stats["license"] == CFG["license"]
+    # the relabel drops nothing: same totals as v0.2.5
+    assert (rows, chars, tokens) == (243060, 5976949249, 2378055718)
+
+    digest = hashlib.sha256()
+    with open(path, "rb") as handle:
+        for block in iter(lambda: handle.read(1 << 24), b""):
+            digest.update(block)
+    assert digest.hexdigest() == evidence["parquet"]["after_relabel_sha256"]
+
+
+def test_evidence_and_scan_agree():
+    evidence = json.loads((DATA / "eurlex.license-evidence.json").read_text())
+    result = json.loads((DATA / "eurlex.third-party-scan.json").read_text())
+    check = evidence["third_party_check"]
+
+    assert evidence["label"] == CFG["license"] and evidence["previous_label"] == OLD_LICENSE
+    assert check["dropped"] == 0
+    assert check["iasb_notice"]["documents"] == result["rules"]["iasb_notice"]["docs"] == len(result["iasb_notice_ids"])
+    assert check["iasb_notice"]["characters"] == result["rules"]["iasb_notice"]["chars"]
+    assert check["copyright_sign"]["documents"] == result["rules"]["copyright_sign"]["docs"]
+    third_party = check["copyright_sign"]["hand_labelled_third_party_credit_or_citation"]
+    assert len(third_party) == len(set(third_party)) == check["copyright_sign"]["hand_labelled_third_party_count"]
+    for name in ("ecb_act", "eesc", "state_aid_sa", "un_ece_regulation"):
+        assert check["author_header_categories"][name] == result["rules"][name]["docs"]
+    assert (result["rows"], result["chars"]) == (evidence["parquet"]["rows"], evidence["parquet"]["chars"])
+
+    urls = [doc["url"] for doc in evidence["reuse_basis"]["documents"]]
+    assert urls == ["https://eur-lex.europa.eu/content/legal-notice/legal-notice.html",
+                    "https://eur-lex.europa.eu/eli/dec/2011/833/oj/eng"]
+    for doc in evidence["reuse_basis"]["documents"]:
+        assert len(doc["sha256"]) == 64 and int(doc["sha256"], 16) >= 0
+        assert doc["retrieved_at"].startswith("2026-10-06")
+
+
+def test_datasheet_is_generated_from_registry_and_stats():
+    stats = json.loads((DATA / "eurlex.stats.json").read_text())
+    card = (DATA / "eurlex.md").read_text().replace("\r\n", "\n")
+    assert card == make_docs.datasheet("eurlex", CFG, stats)
+    assert f"- **License:** `{NEW_LICENSE}`" in card
+    assert OLD_LICENSE not in card
+    assert "art. 4 pr. aut." not in card