# C789 — Specify the shared representation map

## Question

Which information is retained and lost in each chronological view?

## Inputs

```json
{}
```

## Sources

```json
[
  "C733–788"
]
```

## Opened utc

2026-09-28T02:03:51.573981+00:00

## Results

```json
{
  "representations": {
    "path": "model/representation_map.json",
    "sha256": "8eb698f7338398ef742ed093e5f8353af30929952d84b8a6d2eb2e928e4d3e23",
    "bytes": 705
  },
  "recovery_requirement": "source type + path + anchor + residuals for rounded reconstruction"
}
```

## Finding

These families are related representations of structured source data. Their differences are explained by selectors and retained information; a universal date-to-date map is unnecessary and unsupported.

## Reassessment

Record independent review qualifications and prepare the BJ transfer.

## Checks

```json
{
  "distinct_selectors": true
}
```

## Closed utc

2026-09-28T02:03:51.574635+00:00

## Record provenance

Exact record hash: `a450bbeb2a30de5780099816a12152c52cfa33ce09bf96bc24d1c9d43e13768e`

Source journal: `Research_Cycles/C0732_C0831/journal.json`