# C1448 — Test LXX_cumulative at Shem and Flood

## Question

Do the Flood-only, Shem-only and both-node partitions agree under the same accepted source state?

## Sources

```json
[
  "Registered LXX_cumulative source",
  "Named600 hinge source review"
]
```

## Opened utc

2026-09-29T01:15:12.576301+00:00

## Results

```json
{
  "Flood": {
    "source_legs": [
      4340,
      9150
    ],
    "images": [
      4340,
      5190
    ],
    "path2": [
      1406,
      5746,
      10936
    ],
    "path3": [
      6,
      4106,
      8446,
      13636
    ]
  },
  "Shem": {
    "source_legs": [
      4940,
      8550
    ],
    "images": [
      4940,
      5580
    ],
    "path2": [
      1406,
      6346,
      11926
    ],
    "path3": [
      6,
      4106,
      9046,
      14626
    ]
  },
  "Both": {
    "source_legs": [
      4340,
      600,
      8550
    ],
    "images": [
      4340,
      600,
      5580
    ],
    "path2": [
      1406,
      5746,
      6346,
      11926
    ],
    "path3": [
      6,
      4106,
      8446,
      9046,
      14626
    ]
  }
}
```

## Finding

LXX Cumulative adds990 both when the partition moves to Shem and when both nodes are retained.

## Reassessment

Test whether SP Cumulative instead supplies the fully stable counterpart to MT Regular.

## Checks

```json
{
  "expected_heads": true,
  "same_source_total": true
}
```

## Closed utc

2026-09-29T01:15:12.576762+00:00

## Record provenance

Exact record hash: `e30854d28a20ff37a6a9bde90b1fe55d2d143592038d2d59c1febbe494a3028f`

Source journal: `Research_Cycles/C1433_C1482/journal.json`