Source verification and coding materials for a comparative doctrinal study of statutory authority for model training in enforcement agencies

Supporting material for a comparative doctrinal study of statutory authority for machine-learning model training in enforcement agencies. The deposit records how the study's sources were found and checked rather than reproducing them. It contains a search log covering thirteen query families with outcomes and negative results; a verification ledger tiering every source and listing the twelve corrections that verification produced; a worked memo applying the verification method to one primary instrument; a coding sheet stating the decision rule, the rung assignment for each jurisdiction, the operative statutory text relied on, and the two contestable codings; an instrument retrieval table giving version identifiers, official registers, URLs and access dates; and a statement of sample construction, what was not done, and three conditions that would falsify the central claim. No personal data. No new empirical data were generated. All files are plain Markdown.