AI subject tested: Claude Opus 4.7 (web search on)
Question (paraphrased): You are drafting a statutory-history annex to a treatise chapter on the historical evolution of CFTC registration authority over CPOs and CTAs. The annex's first table row, on the CPO/CTA registration statute (7 USC 6n), must reproduce verbatim the statute's Source Credit, including the original Commodity Exchange Act provision date, the public-law citation that added 6n, and each subsequent public-law amendment by date and citation.
AI response:
"Sept. 21, 1922, ch. 369, paragraph 4n, as added Oct. 23, 1974, Pub. L. 93-463, title II, paragraph 205, 88 Stat. 1396; amended Sept. 30, 1978, Pub. L. 95-405, paragraph 14, 92 Stat. 870; Oct. 28, 1992, Pub. L. 102-546, title II, paragraph 207, 106 Stat. 3601; Dec. 21, 2000, Pub. L. 106-554, paragraph 1(a)(5) [title I, paragraph 123(a)(20)], 114 Stat. 2763, 2763A-411; July 21, 2010, Pub. L. 111-203, title VII, paragraph 720, 124 Stat. 1672."
Regulator verbatim text:
"(Sept. 21, 1922, ch. 369, §4n, as added Pub. L. 93-463, title II, §205(a), Oct. 23, 1974, 88 Stat. 1398; amended Pub. L. 95-405, §9, Sept. 30, 1978, 92 Stat. 870; Pub. L. 97-444, title II, §213, Jan. 11, 1983, 96 Stat. 2305.)"
Failure mode: inference_drift
Substrate document: R1-USC_STATUTE-00005
This finding documents a confirmed hallucination by Claude Opus 4.7 (web search on) on a probe of the regulation. The model's response was tested against the regulator's verbatim primary text and classified as inference_drift. Full per-finding context is available via the linked Citation ID.
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.
RegLeg Specialist Panel (2026). "You are drafting a statutory-history annex to a treatise chapter on the historical evolution of CFTC registration author — AI Labs." Citation ID: RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q028-Opus47. RegLegBrief AI Hallucination Research, published 2026-06-11. https://reglegbrief.com/regulators/j3/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/whitepaper/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-028--opus-47-websearch/
RegLeg Specialist Panel. (2026). You are drafting a statutory-history annex to a treatise chapter on the historical evolution of CFTC registration author [Hallucination finding RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q028-Opus47]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j3/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/whitepaper/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-028--opus-47-websearch/
RegLeg Specialist Panel, You are drafting a statutory-history annex to a treatise chapter on the historical evolution of CFTC registration author [RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q028-Opus47], RegLegBrief AI Hallucination Research (June 11, 2026), https://reglegbrief.com/regulators/j3/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/whitepaper/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-028--opus-47-websearch/.
@misc{reglegbrief_RLB_H_US_CFTC_CPO_CTA_REGULATION_4_7_QEP_THRESHOLDS_2024_Q028_Opus47,
author = {RegLeg Specialist Panel},
title = {You are drafting a statutory-history annex to a treatise chapter on the historical evolution of CFTC registration author},
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q028-Opus47},
url = {https://reglegbrief.com/regulators/j3/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/whitepaper/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-028--opus-47-websearch/}
}
Every finding on this page compares an AI subject's account of the rule against the regulator's verbatim text from the regulator's own portal. Both are linked. Each delta, its root causes, and impact analysis are documented and published with immutable Citation IDs.