# C1461 — Link the source490 coefficient with preserved610 and the Covenant circuit

## Question

How do the local SP cap reductions participate in the three-head comparison?

## Sources

```json
[
  "C1432 source explanation",
  "MT–SP cumulative preservation"
]
```

## Opened utc

2026-09-29T01:18:32.013181+00:00

## Results

```json
{
  "cap_loss": 485,
  "accepted_Fall": 5,
  "upper_difference": 490,
  "MT_SP_source_Flood_gap": 120,
  "MT_SP_preserved_head_gap": 610,
  "Covenant_head_gain": 980,
  "MT_LXX_regular_inverse_gap": 1590
}
```

## Finding

The source decomposition610=120+490 and the Covenant gain980=2×490 join the MT/SP head relation to the LXX/SP Key relation. Their1590 total is the same three-head triangle, not extra evidence.

## Reassessment

Test an apparently similar two-Key route while retaining its actual held endpoints.

## Checks

```json
{
  "cap490": true,
  "head_triangle": true
}
```

## Closed utc

2026-09-29T01:18:32.013847+00:00

## Record provenance

Exact record hash: `c0f9281ff2603565e685624fa4b79bf0781e21435c3d57db697a0908331c1cce`

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