# Migration Batch 003 — CCI Research

## Historical Input

- `cci.html`

## Current Disposition

The original protocol is retained as a historical source. Its controlled
baseline/scrubbed/CCI comparison method remains useful, but its header map and
whole-file LZ4 instruction were corrected by historical review Batch 08.

## Validated Current State

- magic `CCIM`;
- 32-byte header;
- 64-bit uncompressed size and index offset;
- 2,048-byte sectors;
- version 1 and alignment 2;
- sector-count-plus-one uint32 index at the end;
- high-bit compression flag;
- independent raw LZ4 sector records with padding-count framing;
- raw 2,048-byte fallback records;
- generated `default.tbn` and attacher `default.xbe` are related sidecars, not CCI members.

## Remaining Validation

A complete matched original ISO, scrubbed ISO and CCI are still required to
close whole-image equality and derive the exact scrub-sector selection policy.
