Update from Crossref snapshot 2026-07 (artifact 9a68b2e5189e2a627d5cd33bca7e17f6cfb7c5b0d39dc4cbe4c05897ce1dda76)

README.md

@@ -33,6 +33,10 @@ configs:
     data_files:
       - split: train
         path: data/ambiguous_urls/*.parquet
+  - config_name: url_evidence
+    data_files:
+      - split: train
+        path: data/url_evidence/*.parquet
 ---
 
 # Crossref DataCite Citations
@@ -45,9 +49,9 @@ the DataCite monthly data file.
 
 Each record in the citation configurations is one DataCite DOI together with
 every confirmed citing work found in Crossref reference metadata. A reference
-is confirmed when it carries a DOI registered in DataCite, an arXiv
-identifier whose arXiv DOI is registered in DataCite, or a landing-page URL
-that is the registered URL of exactly one DataCite record.
+is confirmed when it carries a DOI registered in DataCite or an arXiv
+identifier whose arXiv DOI is registered in DataCite. Registered landing-page
+URLs are evaluated against release metadata before an exact decision joins citations.
 
 Built from the Crossref Metadata Plus monthly snapshot `2026-07` and the
 DataCite monthly data file `2026-07` with
@@ -73,13 +77,16 @@ version 2.2.0.
 
 | Config | Description | Cited Works | Citing Works | Reference Matches |
 |--------|-------------|-------------|--------------|-------------------|
-| `all` | All confirmed citations (default) | 1,715,666 | 7,373,206 | 7,420,027 |
+| `all` | All confirmed citations (default) | 1,705,826 | 7,339,071 | 7,385,186 |
 | `asserted` | Citations whose DOI was asserted by the publisher or matched by Crossref | 582,302 | 1,269,805 | 1,277,754 |
-| `mined` | Citations mined from reference metadata without a publisher or Crossref DOI assertion | 1,325,785 | 6,104,684 | 6,142,273 |
+| `mined` | Citations mined from reference metadata without a publisher or Crossref DOI assertion | 1,314,323 | 6,070,488 | 6,107,432 |
 
 The `ambiguous_urls` configuration holds 2,631 unresolved
 URL references. It is evidence for downstream resolution, not citations, and
-it is excluded from the counts above.
+it is excluded from the counts above. The `url_evidence` configuration records
+all URL decisions. Status totals are `exact` 38,508,
+`related` 396, `uncertain` 34,163,
+and `rejected` 282.
 
 ### Build Identity
 
@@ -87,7 +94,7 @@ it is excluded from the counts above.
 |-------|-------|
 | Crossref snapshot | `2026-07` |
 | DataCite release | `2026-07` |
-| Run identity fingerprint | `f507938de2061f378eede88fccffc72bb5708f350e9677bb8e6edfd40e75f9d5` |
+| Run identity fingerprint | `62d4c5b15deb3053eb082f5a2809e042fae118bef2b1d326947e6a29b6e8e8b7` |
 | Extractor version | `2.2.0` |
 | Artifact manifest | `metadata/pipeline-manifest.json` |
 
@@ -103,6 +110,7 @@ dataset = load_dataset("cometadata/crossref-datacite-citations")
 asserted = load_dataset("cometadata/crossref-datacite-citations", "asserted")
 mined = load_dataset("cometadata/crossref-datacite-citations", "mined")
 ambiguous = load_dataset("cometadata/crossref-datacite-citations", "ambiguous_urls")
+url_evidence = load_dataset("cometadata/crossref-datacite-citations", "url_evidence")
 ```
 
 ## Data Schema
@@ -146,6 +154,44 @@ Each match contains:
 | `candidate_dois` | array | Every DataCite DOI registered with this landing-page URL |
 | `reference` | struct | The Crossref reference metadata (string-valued fields; absent keys are null) |
 
+### `url_evidence`
+
+Every row records a unique URL candidate and its semantic decision from
+selected DataCite metadata. A unique registered URL creates a candidate; it
+does not confirm a citation. Only `exact` decisions enter citation
+configurations.
+
+Candidate fields:
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `citing_doi` | string | Canonical lowercase DOI of the Crossref work containing the reference |
+| `ref_index` | integer | Position of the reference in that work's reference list |
+| `target_doi` | string | Canonical lowercase DataCite DOI proposed by the unique URL lookup |
+| `url` | string | Rust-normalized registered landing-page URL; Python does not normalize it again |
+| `raw_match` | string | Exact reference substring that produced the URL candidate |
+| `provenance` | string | Always `mined` for URL candidates |
+| `match_type` | string | Always `url` for URL candidates |
+| `reference` | struct | Crossref reference metadata, using the safe stringification rules |
+
+Decision fields:
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `candidate key` | derived | `(citing_doi, ref_index, target_doi)` uniquely identifies a candidate; it is not an additional stored column |
+| `status` | string | `exact`, `related`, `uncertain`, or `rejected` semantic result |
+| `reason_codes` | array of string | Ordered reasons for the result |
+| `rule_id` | string | Identifier of the rule that produced the result |
+| `validator_version` | integer | Current URL validator version `1` |
+| `metadata_sha256` | string | Digest of the canonical selected target record; absent metadata uses the canonical missing-record digest `canonical_digest({"metadata": "missing"})` = `4a81185bc14f9b8386a19946353ef04716569b0ca44001ec8da71b83eadc490a` |
+| `policy_sha256` | string | Digest of the current canonical URL policy `5270040aa63c329d19c9fd61d30ed94eace3dec758b0b6f83f154be7fcde40c9` |
+
+`exact` identifies the same object, version, and granularity as `target_doi`.
+`related` identifies a different but related object, version, or granularity.
+`uncertain` has insufficient semantic evidence. `rejected` conflicts with the
+target or an exclusion rule. The manifest binds the four status totals to this
+ledger separately from citation counts and `ambiguous_urls` totals.
+
 ### Provenance Values
 
 - `publisher` - the reference's structured `DOI` field holds the DataCite DOI with `doi-asserted-by: publisher`
@@ -161,8 +207,10 @@ References in the Crossref snapshot are scanned for DOIs, arXiv identifiers,
 and landing-page URLs. Each candidate is normalized and looked up in an index
 built from the DataCite monthly data file `2026-07`: DOIs must be
 registered in DataCite, arXiv identifiers must map to a registered arXiv DOI,
-and URLs must equal the registered landing page of exactly one record. URLs
-registered by several records are recorded as ambiguous evidence instead.
+and uniquely registered landing-page URLs create candidates. Candidate URLs
+are semantically validated against selected release metadata, and only
+`exact` decisions enter citation configurations. URLs registered by several
+records are recorded as ambiguous evidence instead.
 
 ## Data Sources
 

data/all/part-00000.parquet

@@ -1,3 +1,3 @@
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+size 92403608

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+size 184798007

data/mined/part-00000.parquet

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+size 94378407

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+size 216329135

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+size 59753298

data/url_evidence/part-00000.parquet

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metadata/pipeline-manifest.json

@@ -1 +1 @@
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