AI Hallucination Research › Regulators › Major advanced economies › US › CFTC › DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025 › White paper › Detail › Finding
AI Labs · updated 2026-06-03 · methodology v2.1

Finding on 'Q005 Probe' for Claude Sonnet 4.6 with web search ON

RLB Citation ID: RLB-H-US-CFTC-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-Q005-Sonnet46
What the RLB Specialist Panel found

Finding on 'Q005 Probe' for Claude Sonnet 4.6 with web search ON

  • Question (paraphrased to protect IP): A payment processor issues a stablecoin backed by reserves at an OCC-chartered national trust bank. Which CFTC staff letter is operative for FCM margin acceptance of payment stablecoins, what revision to the stablecoin issuer definition did that letter introduce, and what specific regulatory instrument provides the eligibility hook for national trust bank issuers?
  • AI's response: "The sole substantive change was a targeted amendment to the payment stablecoin definition to add national trust banks chartered under federal law (OCC-chartered institutions) as a permitted issuer category — a category Staff Letter 25-40 had not explicitly included."
  • Regulator's text: The OCC Interpretive Letter 1183 provides the hook for national trust bank eligibility.
  • Why the AI went wrong: The model described the amendment's effect accurately at a structural level but omitted the specific secondary instrument — OCC Interpretive Letter 1183 — that the regulator named as the operative eligibility hook. The response answers the "what changed" question while leaving the "why does this charter type qualify" question unresolved, which is precisely what a practitioner needs to determine whether a particular issuer falls within the definition.
  • Cited source(s):
  • https://www.lexology.com/library/detail.aspx?g=851ee073-7470-4751-a5e4-f92434... — Pretextual
Impact for this audience

The elision of OCC Interpretive Letter 1183 as the national trust bank eligibility hook points to a gap in how the retrieval layer handles cross-document dependencies for recent regulatory instruments. The model answered the structural question (what changed in the definition) while dropping the operationally critical cross-reference (what anchors the new category's eligibility) — a failure mode where the RAG layer retrieves summary-level content but does not follow the citation chain to the specific secondary instrument.

References — raw findings (per AI model)
This finding also affects
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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-H-US-CFTC-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-Q005-Sonnet46
Plain text Download 
RegLeg Specialist Panel (2026). "Finding on 'Q005 Probe' for Claude Sonnet 4.6 with web search ON — AI Labs." Citation ID: RLB-H-US-CFTC-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-Q005-Sonnet46. RegLegBrief AI Hallucination Research, published 2026-06-03. https://reglegbrief.com/regulators/j3/us/cftc/digital-asset-collateral-tokenized-assets-staff-guidance-2025/whitepaper/finding/US-CFTC-US-001-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-v1-005--sonnet-46-websearch/
APA 7th edition Download 
RegLeg Specialist Panel. (2026). Finding on 'Q005 Probe' for Claude Sonnet 4.6 with web search ON [Hallucination finding RLB-H-US-CFTC-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-Q005-Sonnet46]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j3/us/cftc/digital-asset-collateral-tokenized-assets-staff-guidance-2025/whitepaper/finding/US-CFTC-US-001-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-v1-005--sonnet-46-websearch/
Bluebook / OSCOLA (US + UK legal) Download 
RegLeg Specialist Panel, Finding on 'Q005 Probe' for Claude Sonnet 4.6 with web search ON [RLB-H-US-CFTC-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-Q005-Sonnet46], RegLegBrief AI Hallucination Research (June 03, 2026), https://reglegbrief.com/regulators/j3/us/cftc/digital-asset-collateral-tokenized-assets-staff-guidance-2025/whitepaper/finding/US-CFTC-US-001-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-v1-005--sonnet-46-websearch/.
BibTeX Download 
@misc{reglegbrief_RLB_H_US_CFTC_DIGITAL_ASSET_COLLATERAL_TOKENIZED_ASSETS_STAFF_GUIDANCE_2025_Q005_Sonnet46,
  author    = {RegLeg Specialist Panel},
  title     = {Finding on 'Q005 Probe' for Claude Sonnet 4.6 with web search ON},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: RLB-H-US-CFTC-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-Q005-Sonnet46},
  url       = {https://reglegbrief.com/regulators/j3/us/cftc/digital-asset-collateral-tokenized-assets-staff-guidance-2025/whitepaper/finding/US-CFTC-US-001-DIGITAL-ASSET-COLLATERAL-TOKENIZED-ASSETS-STAFF-GUIDANCE-2025-v1-005--sonnet-46-websearch/}
}
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