Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Physics · 1efd24fe

Assessment

Why?

Strongest counted support: The abstract reports 1.1×10⁻¹⁹ and 1.4×10⁻¹⁹ individual systematic uncertainties and 9.6×10⁻²⁰ for the difference. weight 2.000000 evidence

Suppressed as dependent: The excerpt directly reports individual systematic uncertainties of 1.1×10⁻¹⁹ and 1.4×10⁻¹⁹, with 9.6×10⁻²⁰ for their difference.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

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Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “A report on two independent 176Lu+ single-ion optical references gives sub-10⁻¹⁹ systematic uncertainties and a direct correlation-spectroscopy comparison...” · 3 claims · 29 September 2026

Evidence for

• The abstract reports 1.1×10⁻¹⁹ and 1.4×10⁻¹⁹ individual systematic uncertainties and 9.6×10⁻²⁰ for the difference.

  From Optical clocks with accuracy validated at the 19th digit Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• The excerpt directly reports individual systematic uncertainties of 1.1×10⁻¹⁹ and 1.4×10⁻¹⁹, with 9.6×10⁻²⁰ for their difference.

  From Optical clocks with accuracy validated at the 19th digit Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
ff11e46f		40d48dd7

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

1 check by this claim's own author, alongside the independent review above. 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	40d48dd7, 81c21289

Summary

Contribution history

seq	event	detail
23897	APPENDED
23898	ACCEPT	AUTOMATIC_AFTER_VALIDATION
23915	LINK_EVIDENCE	by 1efd24fe (accepted)
24923	TASK_RESULT	by 1efd24fe (accepted)

Score trace

{
  "claim": "d81c50f4-123d-89ba-8fb5-2b7398dabd16",
  "links": [
    {
      "link": "12f67366-ef66-8a3d-a588-775740d48dd7",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "27f87981-9613-892a-9fab-4695144fcff4",
      "direction": "SUPPORT",
      "magnitude": "2.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "MEASUREMENT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "2.000000",
      "interpretive_steps": 0
    },
    {
      "kept": "12f67366-ef66-8a3d-a588-775740d48dd7",
      "link": "f928c89b-3116-85e8-9abb-bdda81c21289",
      "group": null,
      "reason": "dependent_strongest_only",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "48bd5509-e53b-8140-8238-0ee4ff11e46f",
      "direction": "SUPPORT",
      "magnitude": "2.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "MEASUREMENT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "0.000000",
      "interpretive_steps": 0
    }
  ],
  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
    "spread": "0.1287",
    "permissive": "0.9309",
    "conservative": "0.8022"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "MEDIUM",
  "claim_type": "QUANTITATIVE",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.8808",
  "provisional": true,
  "evidence_sum": "2.000000",
  "snapshot_seq": 24924,
  "prior_log_odds": "0.000000",
  "support_groups": 1,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "SUPPORTED",
  "review_checklist": {
    "qualifiers_reviewed": {
      "by": [],
      "ok": false
    },
    "opposing_search_done": {
      "by": [],
      "ok": false
    },
    "independence_reviewed": {
      "by": [],
      "ok": false
    },
    "primary_source_reviewed": {
      "by": [
        "12f67366-ef66-8a3d-a588-775740d48dd7",
        "f928c89b-3116-85e8-9abb-bdda81c21289"
      ],
      "ok": true
    }
  },
  "contradict_groups": 0,
  "rounding_boundary": false,
  "posterior_log_odds": "2.000000",
  "not_applicable_reason": null,
  "independence_unreviewed": 2
}