Sample · watermark found

Provenance Report

report_id: 4a7d…c2e0sha256: 9f21ab7c…1,240 wordslang: en2026-08-16T03:52Z
Watermark absent Watermark found
Provenance confirmedprovenance_first: true

A SynthID watermark is present across a substantial passage. This is near-dispositive for AI involvement in that text.

Not a finding of misconduct. Disclosed AI assistance may be entirely legitimate. The report states what was made by AI, not whether that was permitted, which is the reviewer's judgment.

Where the signal is

The transition to renewable baseload is less a question of generation than of storage economics. As battery chemistries mature, the marginal cost of a stored kilowatt-hour has fallen faster than most 2020-era forecasts anticipated, and the second-order effects on grid design are only now becoming legible. Operators who once treated demand as fixed and supply as the variable are inverting that assumption, scheduling flexible loads around abundance rather than scarcity. The regulatory frameworks, predictably, lag the engineering, but the direction of travel is no longer seriously in dispute.

passages carrying a detectable SynthID watermark signal
Watermark signal by document position

Mean g-value per window across the document. A contiguous passage rises above the 0.52 detection threshold, the watermarked region.

0.450.500.550.600.65threshold 0.52watermarked passagedocument position →
Statistical inference

The document's aggregate g-value against reference distributions from our labeled corpus. At 0.585 it lands firmly in the watermarked distribution, a 0.98 posterior probability of a SynthID watermark.

this document · 0.585Unwatermarked(baseline)WatermarkedP(watermark) = 0.980.450.500.550.600.65mean g-value →
Authoritative signals · Tier A
SynthID watermark
Present
P=0.98 · weight 0.95
Claude watermark
Skipped
detection in private preview, no access
C2PA credential
Missing
easily stripped · uninformative
Detector panel · Tier C · corroboration
these did not decide the verdict
DetectorRaw P(ai)Measured FPRCalibrated weightRead
Commercial detector A BYO0.944.8%0.31Agrees with the watermark, corroboration.
Commercial detector B BYO0.902.1%0.44Agrees; still corroboration, not the deciding signal.

With a Tier-A watermark present, the statistical detectors are corroboration only. The verdict stands on the watermark; the detectors merely agree.

◈ Provenance certificate
cert_sha256: a17e0b93d4c2…issuer: provenotetamper-evident · re-checkable