# C1187 — Restore native LXX insertion after matched-row comparison

## Question

What does Cainan add that no common-row coefficient can supply?

## Inputs

```json
{}
```

## Sources

```json
[
  "C1182",
  "C1168",
  "model/complete_source_row_packet.json"
]
```

## Opened utc

2026-09-28T05:22:25.961337+00:00

## Results

```json
{
  "native_insertion": {
    "path": "model/whole_genealogy_native_insertion.json",
    "sha256": "47ae760f92ed9eb575696dfb014115d80ff1215ca9b548fe188be5faaec1b50c",
    "bytes": 658
  },
  "native_heads": [
    1380,
    890
  ]
}
```

## Finding

Native Cainan adds130 to the Regular and460 to the Cumulative head difference, producing1380 and890. Its numbers match Shelah, but its existence and ordered position are separate source information.

## Reassessment

Find a whole-field observation that distinguishes an insertion from a redistributed total.

## Checks

```json
{
  "native_heads": true,
  "same_numbers": true
}
```

## Closed utc

2026-09-28T05:22:25.961782+00:00

## Record provenance

Exact record hash: `8e4b8d6f3d87022f072f4ec768562899ae371e1d0e5c0fdc272d834243632023`

Source journal: `Research_Cycles/C1132_C1431_Recovered/journal.json`