# C1021 — Conditional NT metric recovery

## Question

Which retained source relation determines the70-year unit?

## Inputs

```json
{
  "BJ_trunk": 2450,
  "slots": 35
}
```

## Sources

```json
[
  "File54 §6",
  "C1020"
]
```

## Opened utc

2026-09-28T03:59:43.913743+00:00

## Results

```json
{
  "rank": 2,
  "Enoch_radius_and_slot": [
    4830,
    70
  ],
  "retained_condition": "BJ2450 occupies35 supplied slots"
}
```

## Finding

The additional35-slot/2450 relation determines u=70 and w=4830. It supplies the metric information absent from the Key knot alone.

## Reassessment

Separate metric identification from absolute placement.

## Checks

```json
{
  "rank_two": true,
  "source_metric": true
}
```

## Closed utc

2026-09-28T03:59:43.914468+00:00

## Record provenance

Exact record hash: `278fce80e393c1b3169eebe25bbef73e489770de04265cb10c2a300a359000ce`

Source journal: `Research_Cycles/C0932_C1131/journal.json`