# C1504 — Reconstruct the SP Shem interval

## Question

What are the named nodes when the cumulative Shem600 is explicitly retained?

## Sources

```json
[
  "File52c_latest.md §§3.4–3.5",
  "Reader_before.md SP branch"
]
```

## Opened utc

2026-09-29T02:29:30.574895+00:00

## Results

```json
{
  "source_nodes": [
    1406,
    4716,
    5316,
    13396
  ],
  "source_legs": [
    3310,
    600,
    8080
  ],
  "inverse_nodes": [
    1406,
    2736,
    3336,
    11416
  ],
  "shifts": [
    -1980,
    -1980,
    -1980
  ]
}
```

## Finding

The inverse path is 1406→2736→3336→11416; its whole upper branch translates by −1980.

## Reassessment

Compare both life endpoints, retaining the cumulative seam’s source meaning.

## Checks

```json
{}
```

## Closed utc

2026-09-29T02:29:30.575213+00:00

## Record provenance

Exact record hash: `72223d2182e9cf1415aa3641d3ddcd778bf174167622d83e10fc51cdb5361425`

Source journal: `Research_Cycles/C1483_C1582/c1483_c1582/journal.json`