{
  "schemaVersion": "1.0.0",
  "updatedAt": "2026-08-31",
  "status": "discovery_surfaces_live_indexing_not_verified",
  "canonicalOrigin": "https://4downlabs.com",
  "alternateDomains": [
    "https://www.4downlabs.com",
    "https://fantasyanalytic.com",
    "https://www.fantasyanalytic.com"
  ],
  "honestClaim": "Canonical discovery surfaces are published and crawlable. Search-engine crawling, indexing, ranking, rich-result display, and feed subscriptions are not yet verified or guaranteed.",
  "surfaces": {
    "sitemap": {
      "path": "/sitemap.xml",
      "status": "implemented"
    },
    "robots": {
      "path": "/robots.txt",
      "status": "implemented"
    },
    "rss": {
      "path": "/feed.xml",
      "status": "implemented"
    },
    "jsonFeed": {
      "path": "/feed.json",
      "status": "implemented"
    },
    "organizationJsonLd": {
      "path": "/",
      "status": "implemented"
    },
    "articleJsonLd": {
      "eligibleArticlePages": 14,
      "status": "implemented"
    }
  },
  "externalVerification": {
    "googleSearchConsolePropertyVerified": false,
    "sitemapSubmittedToGoogle": false,
    "indexingVerified": false,
    "richResultsVerified": false,
    "knownFeedSubscribers": null
  },
  "authorship": {
    "publicByline": "Fourth Down Labs Research Desk",
    "schemaType": "Organization",
    "humanPeerReviewClaimed": false,
    "disclosureRule": "Every article page uses an organizational byline and keeps model/run-mode disclosure visible. Structured data never invents a human author."
  },
  "pages": [
    {
      "path": "/",
      "canonicalUrl": "https://4downlabs.com",
      "title": "Fourth Down Labs — Fantasy football, tested",
      "description": "Independent, reproducible fantasy football research with open methods and adversarial review.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/research",
      "canonicalUrl": "https://4downlabs.com/research",
      "title": "Research",
      "description": "Open fantasy football studies, recurring series, and publication status.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/tools/expected-touchdowns",
      "canonicalUrl": "https://4downlabs.com/tools/expected-touchdowns",
      "title": "Expected Touchdown Lab",
      "description": "A free, browser-only calculator for the published Fourth Down Labs receiving touchdown baseline.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/methodology",
      "canonicalUrl": "https://4downlabs.com/methodology",
      "title": "Methodology",
      "description": "The data, statistical, agent-review, provenance, and publication standards behind every study.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/lab",
      "canonicalUrl": "https://4downlabs.com/lab",
      "title": "Lab notebook",
      "description": "Run history, publication gates, and reproducibility artifacts.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/journal",
      "canonicalUrl": "https://4downlabs.com/journal",
      "title": "AI research journal",
      "description": "The models, prompts, design patterns, failures, and operating decisions behind Fourth Down Labs.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/ai-operations",
      "canonicalUrl": "https://4downlabs.com/ai-operations",
      "title": "AI operations ledger",
      "description": "Every preserved GLM-5.3 research run, role, gate, release decision, and receipt gap.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/agent-evaluations",
      "canonicalUrl": "https://4downlabs.com/agent-evaluations",
      "title": "Agent evaluations",
      "description": "The public GLM-5.3 incident baseline, corrective controls, role history, and model-change protocol.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/distribution",
      "canonicalUrl": "https://4downlabs.com/distribution",
      "title": "Open distribution status",
      "description": "Canonical, feed, search, structured-data, and indexing status for Fourth Down Labs.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/corrections",
      "canonicalUrl": "https://4downlabs.com/corrections",
      "title": "Corrections and publication holds",
      "description": "The public correction policy and immutable change ledger.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/readiness",
      "canonicalUrl": "https://4downlabs.com/readiness",
      "title": "Value-first readiness",
      "description": "The evidence gates that keep subscriptions and advertising off until the product earns them.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/privacy",
      "canonicalUrl": "https://4downlabs.com/privacy",
      "title": "Privacy",
      "description": "The current audience measurement, newsletter, advertising, and billing data state.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/standards/audience-measurement",
      "canonicalUrl": "https://4downlabs.com/standards/audience-measurement",
      "title": "Audience measurement standard",
      "description": "The privacy-first contract for measuring meaningful reach without pretending visits are people.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/standards/editorial-independence",
      "canonicalUrl": "https://4downlabs.com/standards/editorial-independence",
      "title": "Editorial and commercial independence",
      "description": "The firewall separating research decisions from future ads, sponsors, affiliates, and subscriptions.",
      "type": "page",
      "lastModified": "2026-08-31"
    },
    {
      "path": "/journal/glm-5-3-research-desk",
      "canonicalUrl": "https://4downlabs.com/journal/glm-5-3-research-desk",
      "title": "Why GLM-5.3 runs our research desk",
      "description": "The jobs it owns, the jobs it never gets, and why every model call should leave a receipt.",
      "type": "journal_article",
      "lastModified": "2026-08-30T18:00:00-04:00"
    },
    {
      "path": "/journal/agent-review-is-not-peer-review",
      "canonicalUrl": "https://4downlabs.com/journal/agent-review-is-not-peer-review",
      "title": "An agent review is not peer review",
      "description": "Role separation is useful. Independence is a stronger claim. Here is how we draw the line.",
      "type": "journal_article",
      "lastModified": "2026-08-30T18:30:00-04:00"
    },
    {
      "path": "/journal/value-before-monetization",
      "canonicalUrl": "https://4downlabs.com/journal/value-before-monetization",
      "title": "The paywall stays closed until the product earns it",
      "description": "The measurable gates for ads, subscriptions, data rights, and a product worth paying for.",
      "type": "journal_article",
      "lastModified": "2026-08-30T19:00:00-04:00"
    },
    {
      "path": "/journal/first-glm-run-rejected",
      "canonicalUrl": "https://4downlabs.com/journal/first-glm-run-rejected",
      "title": "The gate said no. Good.",
      "description": "What our first preserved GLM-5.3 rejection exposed—and the six controls we changed before trying again.",
      "type": "journal_article",
      "lastModified": "2026-08-30T21:00:00-04:00"
    },
    {
      "path": "/journal/first-glm-run-passed",
      "canonicalUrl": "https://4downlabs.com/journal/first-glm-run-passed",
      "title": "The gate said yes. Visual QA said no.",
      "description": "Why model approval was necessary but not sufficient—and the atomic publication pattern we built before shipping.",
      "type": "journal_article",
      "lastModified": "2026-08-31T01:00:00-04:00"
    },
    {
      "path": "/journal/every-model-call-leaves-a-receipt",
      "canonicalUrl": "https://4downlabs.com/journal/every-model-call-leaves-a-receipt",
      "title": "Every model call leaves a receipt",
      "description": "What we record for every OpenRouter attempt, what we exclude, and what a hash cannot prove.",
      "type": "journal_article",
      "lastModified": "2026-08-31T01:20:00-04:00"
    },
    {
      "path": "/journal/a-hold-is-not-a-correction",
      "canonicalUrl": "https://4downlabs.com/journal/a-hold-is-not-a-correction",
      "title": "A publication hold is not a correction",
      "description": "Nothing reached readers. Something still failed. Why both facts belong in the permanent record.",
      "type": "journal_article",
      "lastModified": "2026-08-31T01:40:00-04:00"
    },
    {
      "path": "/journal/the-dashboard-shows-the-failures",
      "canonicalUrl": "https://4downlabs.com/journal/the-dashboard-shows-the-failures",
      "title": "The model dashboard should show the failures",
      "description": "How five evidence layers turn uncalled roles, rejected runs, release holds, and missing bills into one honest record.",
      "type": "journal_article",
      "lastModified": "2026-08-31T02:00:00-04:00"
    },
    {
      "path": "/journal/your-own-mistakes-are-the-first-eval-set",
      "canonicalUrl": "https://4downlabs.com/journal/your-own-mistakes-are-the-first-eval-set",
      "title": "Your own mistakes are the first eval set",
      "description": "How preserved GLM-5.3 incidents become regression cases, tested controls, and a model-change protocol.",
      "type": "journal_article",
      "lastModified": "2026-08-31T02:20:00-04:00"
    },
    {
      "path": "/journal/distribution-is-part-of-the-research-system",
      "canonicalUrl": "https://4downlabs.com/journal/distribution-is-part-of-the-research-system",
      "title": "Distribution is part of the research system",
      "description": "Why canonical URLs, open feeds, structured authorship, and honest indexing status belong beside the methodology.",
      "type": "journal_article",
      "lastModified": "2026-08-31T04:45:00Z"
    },
    {
      "path": "/journal/deterministic-spine-probabilistic-specialists",
      "canonicalUrl": "https://4downlabs.com/journal/deterministic-spine-probabilistic-specialists",
      "title": "Keep the math deterministic. Let GLM-5.3 attack the meaning.",
      "description": "The agentic design pattern that separates calculation, specialist judgment, mechanical gating, and release authority.",
      "type": "journal_article",
      "lastModified": "2026-08-31T05:02:41Z"
    },
    {
      "path": "/journal/research-data-is-not-instruction",
      "canonicalUrl": "https://4downlabs.com/journal/research-data-is-not-instruction",
      "title": "Research data can contain instructions. It still isn't the boss.",
      "description": "Our first GLM-5.3 prompt-injection evaluation preserved 5/5 blocking decisions—and exposed why one strict metric passed only 1/5.",
      "type": "journal_article",
      "lastModified": "2026-08-31T05:26:36Z"
    },
    {
      "path": "/research/touchdown-regression",
      "canonicalUrl": "https://4downlabs.com/research/touchdown-regression",
      "title": "Touchdowns are mostly rented, not owned",
      "description": "A walk-forward test of the fantasy maxim — and a more useful way to apply it.",
      "type": "research_article",
      "lastModified": "2026-08-30T12:00:00Z"
    },
    {
      "path": "/research/rookie-wr-hit-rates",
      "canonicalUrl": "https://4downlabs.com/research/rookie-wr-hit-rates",
      "title": "Round 1 buys a 63% shot. Day 3 buys 6%.",
      "description": "A complete-cohort test of 412 drafted receivers shows how quickly the fantasy base rate collapses.",
      "type": "research_article",
      "lastModified": "2026-08-30T12:00:00Z"
    }
  ],
  "feedItems": [
    {
      "id": "urn:fourth-down-labs:journal:012",
      "path": "/journal/research-data-is-not-instruction",
      "url": "https://4downlabs.com/journal/research-data-is-not-instruction",
      "title": "Research data can contain instructions. It still isn't the boss.",
      "description": "Our first GLM-5.3 prompt-injection evaluation preserved 5/5 blocking decisions—and exposed why one strict metric passed only 1/5.",
      "datePublished": "2026-08-31T05:26:36Z",
      "dateModified": "2026-08-31T05:26:36Z",
      "section": "SECURITY EVALUATION",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:011",
      "path": "/journal/deterministic-spine-probabilistic-specialists",
      "url": "https://4downlabs.com/journal/deterministic-spine-probabilistic-specialists",
      "title": "Keep the math deterministic. Let GLM-5.3 attack the meaning.",
      "description": "The agentic design pattern that separates calculation, specialist judgment, mechanical gating, and release authority.",
      "datePublished": "2026-08-31T05:02:41Z",
      "dateModified": "2026-08-31T05:02:41Z",
      "section": "AGENTIC DESIGN PATTERN",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:010",
      "path": "/journal/distribution-is-part-of-the-research-system",
      "url": "https://4downlabs.com/journal/distribution-is-part-of-the-research-system",
      "title": "Distribution is part of the research system",
      "description": "Why canonical URLs, open feeds, structured authorship, and honest indexing status belong beside the methodology.",
      "datePublished": "2026-08-31T04:45:00Z",
      "dateModified": "2026-08-31T04:45:00Z",
      "section": "DISTRIBUTION PATTERN",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:009",
      "path": "/journal/your-own-mistakes-are-the-first-eval-set",
      "url": "https://4downlabs.com/journal/your-own-mistakes-are-the-first-eval-set",
      "title": "Your own mistakes are the first eval set",
      "description": "How preserved GLM-5.3 incidents become regression cases, tested controls, and a model-change protocol.",
      "datePublished": "2026-08-31T02:20:00-04:00",
      "dateModified": "2026-08-31T02:20:00-04:00",
      "section": "EVALUATION PATTERN",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:008",
      "path": "/journal/the-dashboard-shows-the-failures",
      "url": "https://4downlabs.com/journal/the-dashboard-shows-the-failures",
      "title": "The model dashboard should show the failures",
      "description": "How five evidence layers turn uncalled roles, rejected runs, release holds, and missing bills into one honest record.",
      "datePublished": "2026-08-31T02:00:00-04:00",
      "dateModified": "2026-08-31T02:00:00-04:00",
      "section": "TRANSPARENCY SYSTEM",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:007",
      "path": "/journal/a-hold-is-not-a-correction",
      "url": "https://4downlabs.com/journal/a-hold-is-not-a-correction",
      "title": "A publication hold is not a correction",
      "description": "Nothing reached readers. Something still failed. Why both facts belong in the permanent record.",
      "datePublished": "2026-08-31T01:40:00-04:00",
      "dateModified": "2026-08-31T01:40:00-04:00",
      "section": "CORRECTION DESIGN",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:006",
      "path": "/journal/every-model-call-leaves-a-receipt",
      "url": "https://4downlabs.com/journal/every-model-call-leaves-a-receipt",
      "title": "Every model call leaves a receipt",
      "description": "What we record for every OpenRouter attempt, what we exclude, and what a hash cannot prove.",
      "datePublished": "2026-08-31T01:20:00-04:00",
      "dateModified": "2026-08-31T01:20:00-04:00",
      "section": "AUDIT PATTERN",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:005",
      "path": "/journal/first-glm-run-passed",
      "url": "https://4downlabs.com/journal/first-glm-run-passed",
      "title": "The gate said yes. Visual QA said no.",
      "description": "Why model approval was necessary but not sufficient—and the atomic publication pattern we built before shipping.",
      "datePublished": "2026-08-31T01:00:00-04:00",
      "dateModified": "2026-08-31T01:00:00-04:00",
      "section": "RELEASE PATTERN",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:004",
      "path": "/journal/first-glm-run-rejected",
      "url": "https://4downlabs.com/journal/first-glm-run-rejected",
      "title": "The gate said no. Good.",
      "description": "What our first preserved GLM-5.3 rejection exposed—and the six controls we changed before trying again.",
      "datePublished": "2026-08-30T21:00:00-04:00",
      "dateModified": "2026-08-30T21:00:00-04:00",
      "section": "FAILURE REPORT",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:003",
      "path": "/journal/value-before-monetization",
      "url": "https://4downlabs.com/journal/value-before-monetization",
      "title": "The paywall stays closed until the product earns it",
      "description": "The measurable gates for ads, subscriptions, data rights, and a product worth paying for.",
      "datePublished": "2026-08-30T19:00:00-04:00",
      "dateModified": "2026-08-30T19:00:00-04:00",
      "section": "OPERATING NOTE",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:002",
      "path": "/journal/agent-review-is-not-peer-review",
      "url": "https://4downlabs.com/journal/agent-review-is-not-peer-review",
      "title": "An agent review is not peer review",
      "description": "Role separation is useful. Independence is a stronger claim. Here is how we draw the line.",
      "datePublished": "2026-08-30T18:30:00-04:00",
      "dateModified": "2026-08-30T18:30:00-04:00",
      "section": "DESIGN PATTERN",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:journal:001",
      "path": "/journal/glm-5-3-research-desk",
      "url": "https://4downlabs.com/journal/glm-5-3-research-desk",
      "title": "Why GLM-5.3 runs our research desk",
      "description": "The jobs it owns, the jobs it never gets, and why every model call should leave a receipt.",
      "datePublished": "2026-08-30T18:00:00-04:00",
      "dateModified": "2026-08-30T18:00:00-04:00",
      "section": "MODEL LEDGER",
      "contentType": "journal_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Organizational byline. Model involvement and limits are disclosed on the article page; no independent human peer review is implied."
    },
    {
      "id": "urn:fourth-down-labs:research:FDL-001",
      "path": "/research/touchdown-regression",
      "url": "https://4downlabs.com/research/touchdown-regression",
      "title": "Touchdowns are mostly rented, not owned",
      "description": "A walk-forward test of the fantasy maxim — and a more useful way to apply it.",
      "datePublished": "2026-08-30T12:00:00Z",
      "dateModified": "2026-08-30T12:00:00Z",
      "section": "Touchdown Regression",
      "contentType": "research_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Deterministic / offline launch review. The published snapshot's article page and manifest state whether GLM-5.3 reviewed the run."
    },
    {
      "id": "urn:fourth-down-labs:research:FDL-002",
      "path": "/research/rookie-wr-hit-rates",
      "url": "https://4downlabs.com/research/rookie-wr-hit-rates",
      "title": "Round 1 buys a 63% shot. Day 3 buys 6%.",
      "description": "A complete-cohort test of 412 drafted receivers shows how quickly the fantasy base rate collapses.",
      "datePublished": "2026-08-30T12:00:00Z",
      "dateModified": "2026-08-30T12:00:00Z",
      "section": "Rookie WR Hit Rates",
      "contentType": "research_article",
      "author": "Fourth Down Labs Research Desk",
      "aiDisclosure": "Deterministic / offline launch review. The published snapshot's article page and manifest state whether GLM-5.3 reviewed the run."
    }
  ]
}
