Investment Banking × Legal — United States · updated 2026-06-11

Finding#3 . Wrong NPRM-pre-print footer date for Commission approval

RLB Citation ID: RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021

What the RLB Specialist Panel found

Citation ID: RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021-Opus47
AI's failure: AI reported a wrong Commission-approval footer date on the NPRM pre-print PDF
Risk for the Legal team: Operational accuracy exposure on regulatory-history timelines that quote AI-supplied footer text For legal teams at investment banking firms working on CFTC Regulation 4.7 matters, the AI's stated answer reads as a verbatim quotation that staff would paste into a register entry, memo, or client deliverable before verification against the source. The regulator's own text records a different position. The NPRM pre-print PDF carries a recurring footer reading verbatim: 'Pre-Print Version - Commission approved on 9/29/2023 (subject to technical corrections required for Federal Register publication)'. Opus 4.7 reported the footer as 'Pre-Print Version - Commission approved on 10/2/2023'. The date in the footer is incorrect; 9/29/2023 was the Friday before the Monday 10/2/2023 open Commission meeting at which the proposal was discussed. The model has conflated the two dates. For the legal teams at investment banking firms working this question into an internal compliance, legal, operations, or risk record, the AI's stated answer would embed an error into the working record that downstream reviewers treat as verified.
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References — raw findings (per AI model)

RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021-Opus47 Claude Opus 4.7 (web search on)
RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021-Sonnet46 Claude Sonnet 4.6 (web search on)

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Cite this finding

Each finding has a stable Citation ID (RLB-F-… for aggregated case-study findings, RLB-H-… for raw per-model hallucinations) — like a DOI, the ID always resolves to the canonical finding even if URLs change.

RLB Citation ID: RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021

Plain text Download

RegLeg Specialist Panel (2026). "Finding#3 . Wrong NPRM-pre-print footer date for Commission approval — Investment Banking × Legal — United States." Citation ID: RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021. RegLegBrief AI Hallucination Research, published 2026-06-11. https://reglegbrief.com/regulators/j3/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/sectors/investment_banking/legal/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-021/

APA 7th edition Download

RegLeg Specialist Panel. (2026). Finding#3 . Wrong NPRM-pre-print footer date for Commission approval [Hallucination finding RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j3/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/sectors/investment_banking/legal/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-021/

Bluebook / OSCOLA (US + UK legal) Download

RegLeg Specialist Panel, Finding#3 . Wrong NPRM-pre-print footer date for Commission approval [RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021], RegLegBrief AI Hallucination Research (June 11, 2026), https://reglegbrief.com/regulators/j3/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/sectors/investment_banking/legal/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-021/.

BibTeX Download

@misc{reglegbrief_RLB_F_US_CFTC_CPO_CTA_REGULATION_4_7_QEP_THRESHOLDS_2024_Q021,
  author    = {RegLeg Specialist Panel},
  title     = {Finding#3 . Wrong NPRM-pre-print footer date for Commission approval},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q021},
  url       = {https://reglegbrief.com/regulators/j3/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/sectors/investment_banking/legal/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-021/}
}

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