Field Definition Governance Note: Canonical Crosswalk for LFP-0, DER, and BTI (v1.0)

This technical note establishes governance rules for field definitions used across the Transparent Boundary Theory (TBT) research programme. Multiple artefacts within the corpus employ six-slot structured records to capture human–AI decision events and accountability structures. Variants appear across the LumenFold Protocol (LFP-0), Decision-Event Record (DER) schema, and Boundary Transparency Index (BTI) evaluation framework. This document provides: • an inventory of field families observed across the corpus • object-level classification of each schema variant • a canonical crosswalk mapping across protocol, operational, and evaluation layers • governance rules defining canonical anchors and admissible derived forms The note establishes LFP-0 as the canonical protocol core, DER as the operational decision-event artefact, and BTI as the evaluation layer. The crosswalk ensures corpus integrity by formalizing version-governed differentiation among these schema families. This governance artefact is intended to stabilize construct identity across publications, datasets, and empirical studies within the research programme. Indexed in the project Root Index (https://doi.org/10.5281/zenodo.17992916).Author: Hon Bor So ORCID: 0009-0008-2768-7494Author note: The author also publishes under the name Sing So (Chöndrel Dorje).