# C831 — Seal the100-step family-synthesis cycle

## Question

Are all100 sequential actions and final reading artifacts complete?

## Inputs

```json
{
  "first": 732,
  "last": 831,
  "next": 832
}
```

## Sources

```json
[
  "C732–830; final independent preflight"
]
```

## Opened utc

2026-09-28T02:20:59.093372+00:00

## Results

```json
{
  "completed_steps": 100,
  "range": [
    732,
    831
  ],
  "final_artifacts": [
    {
      "path": "deliverables/490d_Chronological_Families_Integrated_Synthesis_C831.md",
      "sha256": "e79310e7fbc145b897eb642b443076e0b3e253132fcd9e5a2089f03ec72f105b",
      "bytes": 24336
    },
    {
      "path": "deliverables/490d_Chronological_Families_Reading_Guide_C831.md",
      "sha256": "de180cfecf337a2e03760bb13583f8592f9c2c36f14f11d952f509bdd40900a9",
      "bytes": 4067
    },
    {
      "path": "deliverables/490d_Chronological_Families_Map_C831.svg",
      "sha256": "eb3db78ac4e24d5d5a3fc10a4adb7215a1561f0f5a6da28b3553f6005de38809",
      "bytes": 15190
    },
    {
      "path": "deliverables/490d_Chronological_Families_Map_C831.png",
      "sha256": "e170e8ea6e80330f48825ac616cd1dd1939e34cbc8dbae0302008f14bd9904d4",
      "bytes": 398315
    },
    {
      "path": "deliverables/490d_Chronological_Families_Checkpoint_After_C831.md",
      "sha256": "b1b1d3312abd1a25cc155dccacbc0ed241b18396d68d3b79c46d69fdb63b8943",
      "bytes": 5620
    },
    {
      "path": "evidence/CLAIM_MAP_C831.md",
      "sha256": "33ff896fad4a3b382341f1701c0e55ef51a26abe944d9d03394e0289511858d3",
      "bytes": 1344
    },
    {
      "path": "evidence/REVIEW_FINAL_PREFLIGHT.md",
      "sha256": "e03dfca7770b2063d9062b52bf051c4f21c29d68193bb7b869c4fa576963e274",
      "bytes": 3900
    }
  ],
  "next_unused_step": 832,
  "synthesis": "ordered source paths; mode selectors; finite supported variants; rounding residuals; weighted contraction/coarsening; declared component transforms"
}
```

## Finding

All100 authorized research actions are complete, each with a reassessment. The cycle yields a constructive explanation of how the chronological families fit together, supported by full ordered reconstructions and explicit source qualifications.

## Reassessment

Run the final100-step replay, package and save; retain C832 as the next unused research number.

## Checks

```json
{
  "contiguous_prefix": true,
  "exactly100": true,
  "artifacts_present": true,
  "preflight_pass": true
}
```

## Closed utc

2026-09-28T02:20:59.095847+00:00

## Record provenance

Exact record hash: `292bb3597ea4fd5cde0c535332220125ca15dd4cd176f97748a9d8ea576c73fb`

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