# C511 — The rounded macro529 endpoint realization

## Question

Does the reflected12026 anchor complete the macro ladder with the declared rounded coordinates?

## Inputs

```json
{
  "anchor_AD": 12026,
  "starting_AD": 1446,
  "widths": [
    10580,
    11500,
    12500
  ]
}
```

## Sources

```json
[
  "File52c §§3.8–3.9",
  "C505,C510"
]
```

## Opened utc

2026-09-27T22:47:17.937880+00:00

## Results

```json
{
  "anchor_q": 12025,
  "outputs_q": [
    1445,
    525,
    -475
  ],
  "display": [
    "AD 1446",
    "AD 526",
    "476 BC"
  ],
  "successive_widths": [
    10580,
    11500,
    12500
  ],
  "civil_first_width_if_substituted": 10580
}
```

## Finding

The supplied rounded Mirror ladder is AD1446→AD526→476BC, with AD12026 held. This is a licensed endpoint realization of the tenfold duration ladder. The last crossing uses the rounded convention; a civil substitution would produce a different final display.

## Reassessment

Use the14726 anchor-change law to reconstruct the complete ten-member family rather than selected coincidences.

## Checks

```json
{
  "q": true,
  "display": true
}
```

## Closed utc

2026-09-27T22:47:17.938250+00:00

## Record provenance

Exact record hash: `90a6147867667b81c0711d85992790a0c29930b773c2b66483344821eaa865a6`

Source journal: `Research_Cycles/C0482_C0531/journal.json`