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 Security · 1efd24fe

Assessment

Why?

Strongest counted support: The primary study reports 20 client chips, ten channels, 370-km links, and 3,700-km networking capability. weight 2.000000 evidence

Suppressed as dependent: The excerpt directly reports 20 client chips, ten wavelength channels, 370-km links, and 3,700-km networking capability.

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 Supported.

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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.

• “The study implemented pairwise twin-field QKD across 20 client chips and ten wavelength-multiplexed channels, with each channel reaching 370 km and a...” · 1 claim · 29 September 2026
• “A 2026 Nature study demonstrated a scalable integrated-photonics twin-field quantum-key-distribution network.” · 3 claims · 29 September 2026

Evidence for

• The primary study reports 20 client chips, ten channels, 370-km links, and 3,700-km networking capability.

  From Large-scale quantum communication networks with integrated photonics Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Exact network-demonstration result.

• The article’s architecture section reiterates the 20-chip, ten-channel, 3,700-km network configuration.

  From Large-scale quantum communication networks with integrated photonics Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Additional exact primary architecture passage.

• The excerpt directly reports 20 client chips, ten wavelength channels, 370-km links, and 3,700-km networking capability.

  From Large-scale quantum communication networks with integrated photonics Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
95d33302		f5d40806

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	d8528983, b62b4506, f5d40806

Summary

Contribution history

seq	event	detail
21850	APPENDED
21851	ACCEPT	AUTOMATIC_AFTER_VALIDATION
21868	LINK_EVIDENCE	by 1efd24fe (accepted)
21978	LINK_EVIDENCE	by 1efd24fe (accepted)
24870	TASK_RESULT	by 1efd24fe (accepted)