> **Historical provenance document — superseded.** This file preserves an earlier project state. It is not the current scientific interpretation. The canonical v0.3 position is that galaxy-specific structural fingerprints are reproducible and organized; sampling and preparation sensitivity describe how the fingerprints are expressed rather than negating their existence.

# Status

## Foundation complete

- SPARC source galaxies: **175**
- Prepared valid radial rows: **3389**
- Chamber-ready ladders: **175 pairs**
- Primary sample: **121 galaxies**
- Consolidated STRUC-I profiles: **4840 rows**
- κ points per primary galaxy: **40**
- Consolidated STRUC-PERC-I records: **121**
- Structural curve atlas: **built**

## Present interpretation

The full response curves retain galaxy-specific structural information. It is not yet known
how much of that information is intrinsic and how much is caused by sampling, radial coverage,
or elementary profile geometry.

## Registered gate

**GAL-FINGERPRINT-I — Galaxy Structural Identity and Stability Audit**

Protocol v0.1 was accepted on **2026-07-26**. Gate A engineering inputs are prepared:

- frozen 12-galaxy pilot panel;
- 100 pilot realizations across deletion, thinning, coverage, M/L, and null branches;
- 17 six-slot STRUC-I batches;
- complete input and run manifests;
- tested consolidation and source-retrieval pipeline.

Current state: **pilot chamber execution pending**. No pilot result is included in confirmatory
metrics, and no scientific verdict has been assigned. Observational uncertainty remains
explicitly untested under protocol v0.1.
