{
  "name": "SEO-tool backlink overlap: retained historical projection",
  "analysis_date": "2026-10-03",
  "source_study_published": "2026-06-30",
  "source_study_url": "https://crawlgraph.com/blog/who-links-to-every-seo-tool",
  "source_file": "/data/seo-tools-universal-linkers.json",
  "source_sha256": "732448316436fc6fe35f2dae9e535169bb4134010806b45012f9e0b68c9fb7f3",
  "source_graph_release": null,
  "source_collection_date": null,
  "per_subject_capture_limit": null,
  "subjects": [
    "ahrefs.com",
    "semrush.com",
    "moz.com",
    "surferseo.com",
    "seranking.com",
    "majestic.com",
    "spyfu.com",
    "serpstat.com"
  ],
  "selection": "Retained rows with a recorded link to at least 6 of 8 selected SEO tools.",
  "rows": 159,
  "overlap_counts": {
    "6": 75,
    "7": 47,
    "8": 37
  },
  "verification": "Original retained JSON, CSV and generated TypeScript row arrays agree. Counts recomputed offline.",
  "limitations": [
    "The original graph release, collection timestamp and extraction caps are unretained.",
    "Source graph extraction and platform filtering were not independently reproduced.",
    "This is a historical retained projection, not a complete or current web graph.",
    "Rows are referring domains, not linking-page URLs or qualified outreach prospects.",
    "The source's larger aggregate and editorial-quality statistics cannot be reconstructed from these rows.",
    "CG authority is a stored historical score, not a current quality or relevance endorsement."
  ]
}