Research methodology

Last updated: 2026-06-09

Taridex answers does this ruling still hold? by reconstructing ruling-date HTS and CFR authorities, comparing them to current law, and preserving traceable evidence from retrieval through export. This page explains the method at a conceptual level and is not legal advice.

Temporal authority binding

For a ruling identifier and date, the platform selects the HTS edition and CFR snapshot valid at that time, traverses successor codes where applicable, and classifies impact (for example, SUPERSEDED) against current authorities.

Citation trace stages

Each research result follows an ordered citation trace from query interpretation to retrieval, authority-node construction, temporal binding, comparison, and exportable provenance. Stage ordering is retained so reviewers can inspect how each conclusion was produced.

Governed retrieval

Search runs over versioned indexes tied to the active corpus release (hybrid vector plus structured filters). Retrieval and graph traversal operate on governed objects so evidence can be inspected and replayed. Control and handling details are documented on the security page.

Export integrity

Research packages (JSON, markdown, ZIP) are written with a payload SHA-256 digest recorded at export time. The digest allows integrity verification when packages are transferred, reviewed, or replayed.

Documented boundaries

• CFR depth before 1997 is limited; pre-1997 gaps are documented internally.
• Section 301 and Part 152 coverage gaps are disclosed — request the gap registry during diligence.
• Taridex does not provide duty calculation, entry filing, or CROSS registry replacement.