{"schemaVersion":"journal-source-map-version-history-v1","canonicalPath":"/research/journal-source-map/history","currentVersion":"1.8","verificationPolicy":"Automated monitoring can open a review, but only a second manual source review can publish a verified revision.","versions":[{"version":"1.0","state":"superseded","publishedOn":"2026-08-26","evidenceReviewedOn":"2026-08-26","studyDate":"2026-08-18","supersedes":null,"datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-18.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-18.csv","summary":"Initial five-journal source-fragmentation study.","materialChanges":["Mapped 15 official publisher, society, journal, and author-center surfaces.","Separated six author decision areas and 16 journal-by-decision evidence cells.","Published the typed dataset, CSV, methodology, and canonical guide owners together."]},{"version":"1.1","state":"superseded","publishedOn":"2026-08-27","evidenceReviewedOn":"2026-08-27","studyDate":"2026-08-27","supersedes":"1.0","datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-27.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-27.csv","summary":"Cross-disciplinary expansion to ten journals and 30 official source surfaces.","materialChanges":["Added Nature Communications, PLOS ONE, Physical Review Letters, ACS Catalysis, and The BMJ.","Broadened the purposive sample across multidisciplinary science, physics, chemistry, and medicine.","Preserved the initial five-journal release as an immutable, separately addressable baseline."]},{"version":"1.2","state":"superseded","publishedOn":"2026-08-27","evidenceReviewedOn":"2026-08-27","studyDate":"2026-08-27","supersedes":"1.1","datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-27-v1-2.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-27-v1-2.csv","summary":"Cross-disciplinary expansion to 15 journals and 45 official source surfaces.","materialChanges":["Added eLife, the New England Journal of Medicine, The Journal of Finance, Academy of Management Journal, and PNAS.","Extended the sample across reviewed preprints, clinical medicine, finance, management, and academy publishing.","Preserved both earlier releases as immutable, separately addressable baselines."]},{"version":"1.3","state":"superseded","publishedOn":"2026-08-27","evidenceReviewedOn":"2026-08-27","studyDate":"2026-08-27","supersedes":"1.2","datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-27-v1-3.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-27-v1-3.csv","summary":"Evidence expansion to 20 journals and 60 official source surfaces.","materialChanges":["Added Nature, JAMA, Nucleic Acids Research, American Economic Review, and Management Science.","Replaced candidates whose current official source path could not pass the distinct-surface evidence gate.","Preserved all three earlier releases as immutable, separately addressable baselines."]},{"version":"1.4","state":"superseded","publishedOn":"2026-08-27","evidenceReviewedOn":"2026-08-27","studyDate":"2026-08-27","supersedes":"1.3","datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-27-v1-4.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-27-v1-4.csv","summary":"Canonical-owner correction preserving the 20-journal, 60-surface evidence release.","materialChanges":["Replaced two redirected guide aliases with their live canonical owner paths.","Made no change to the official-source evidence, decision classifications, or study findings.","Preserved v1.3 as an immutable, separately addressable evidence release."]},{"version":"1.5","state":"superseded","publishedOn":"2026-08-28","evidenceReviewedOn":"2026-08-28","studyDate":"2026-08-28","supersedes":"1.4","datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-28-v1-5.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-28-v1-5.csv","summary":"Cross-disciplinary expansion to 25 journals and 75 official source surfaces.","materialChanges":["Added Frontiers in Microbiology, JAMA Network Open, Nature Biotechnology, IEEE TPAMI, and PLOS Biology.","Extended the maintained evidence layer across microbiology, open-access medicine, biotechnology, computer vision, and biology.","Preserved v1.4 and every earlier release as immutable, separately addressable evidence baselines."]},{"version":"1.6","state":"superseded","publishedOn":"2026-08-28","evidenceReviewedOn":"2026-08-28","studyDate":"2026-08-28","supersedes":"1.5","datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-28-v1-6.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-28-v1-6.csv","summary":"Publisher-diverse expansion to 30 journals and 90 official source surfaces.","materialChanges":["Added Science Advances, Chemical Science, Journal of Clinical Oncology, Antioxidants, and The Quarterly Journal of Economics.","Added four publisher ecosystems not represented in v1.5: AAAS, the Royal Society of Chemistry, the American Society of Clinical Oncology, and MDPI.","Normalized the PLOS ONE publisher entity and removed an unsupported Frontiers disclosure/data mapping while preserving the immutable v1.5 record and every earlier evidence release."]},{"version":"1.7","state":"superseded","publishedOn":"2026-08-28","evidenceReviewedOn":"2026-08-28","studyDate":"2026-08-28","supersedes":"1.6","datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-28-v1-7.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-28-v1-7.csv","summary":"Reuse and institutional-adoption release preserving the verified 30-journal evidence corpus.","materialChanges":["Added explicit CC BY 4.0 terms for Manusights original classifications, arrangement, and teaching materials.","Added a structured path for institutions to report a public syllabus, LibGuide, workshop, or repository placement for independent verification.","Made no change to the 30 journal records, 90 official source surfaces, or the underlying evidence review."]},{"version":"1.8","state":"current","publishedOn":"2026-08-29","evidenceReviewedOn":"2026-08-28","studyDate":"2026-08-28","supersedes":"1.7","datasetJsonPath":"/research/data/journal-source-fragmentation-study-2026-08-29-v1-8.json","datasetCsvPath":"/research/data/journal-source-fragmentation-study-2026-08-29-v1-8.csv","summary":"Reproducibility and external-reuse release preserving the verified 30-journal evidence corpus.","materialChanges":["Added a machine-readable codebook, reproducibility manifest, file checksums, and deterministic release-bundle builder.","Published versioned chart assets and copyable attribution snippets for lawful external reuse without weakening site security headers.","Added a deeper cross-journal findings report and DOI, repository-release, source-change, and adoption readiness controls without changing the underlying evidence records."]}]}