# C1518 — Embed the Covenant Key in the Babylonian grid

## Question

How does the161→175 Covenant carrier connect the two inverse heads here?

## Sources

```json
[
  "File60.md §2.6",
  "Reader_before.md Covenant bridge"
]
```

## Opened utc

2026-09-29T02:30:54.977811+00:00

## Results

```json
{
  "normalized_anchor": 19,
  "normalized_input": 180,
  "normalized_output": 194,
  "input_radius_units": 161,
  "output_radius_units": 175,
  "actual_radius": [
    11270,
    12250
  ],
  "gain": 980
}
```

## Finding

The Covenant Key is19+(25/23)×161=194: exactly70 copies of161→175, linking LXX13136 toSP14116 with980 gain.

## Reassessment

Compare both heads against their shared5436 junction rather than against the Covenant alone.

## Checks

```json
{}
```

## Closed utc

2026-09-29T02:30:54.977967+00:00

## Record provenance

Exact record hash: `fbcf1959ad956777222841b3cc9f8eb178a19ab0d0a994e40c07965f028412ec`

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