This finding implicates the training data layer: the model appears to have learned the retroactivity rule from pre-adoption negotiating commentary that described an earlier draft rather than the final adopted text. The retrieval step did not correct this because the cited secondary source itself may contain the same error. Both training corpus curation and retrieval-source ranking need to weight post-adoption primary text over pre-adoption commentary for recently adopted instruments.
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). "Finding on 'Q003 Probe' for Claude Opus 4.7 with web search ON — AI Labs." Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q003-Opus47. RegLegBrief AI Hallucination Research, published 2026-05-31. https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-003--opus-47-websearch/
RegLeg Specialist Panel. (2026). Finding on 'Q003 Probe' for Claude Opus 4.7 with web search ON [Hallucination finding RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q003-Opus47]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-003--opus-47-websearch/
RegLeg Specialist Panel, Finding on 'Q003 Probe' for Claude Opus 4.7 with web search ON [RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q003-Opus47], RegLegBrief AI Hallucination Research (May 31, 2026), https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-003--opus-47-websearch/.
@misc{reglegbrief_RLB_H_INT_UNTC_BBNJ_HIGH_SEAS_BIODIVERSITY_AGREEMENT_2023_Q003_Opus47,
author = {RegLeg Specialist Panel},
title = {Finding on 'Q003 Probe' for Claude Opus 4.7 with web search ON},
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q003-Opus47},
url = {https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-003--opus-47-websearch/}
}