# C1628 — Verify all source-derived models independently

## Question

Do independent numeric reversal and direct source-row reconstruction reproduce every persisted mathematical model?

## Sources

```json
[
  "agents/verify_cycle_algebra.py",
  "all model files",
  "frozen evidence"
]
```

## Opened utc

2026-09-29T15:10:22.507034+00:00

## Results

```json
{
  "group_count": 44,
  "model_count": 42,
  "qualitative_model_count": 3,
  "uncovered_models": [],
  "status": "PASS"
}
```

## Finding

All42 models are covered by44 independent arithmetic/integrity groups. The verifier reconstructs source rows and uses numeric decimal reversal; all results and journal bindings agree.

## Reassessment

Build the readable continuation with the complete fixed comparison and explicit source/inference distinctions.

## Checks

```json
{}
```

## Closed utc

2026-09-29T15:11:05.603420+00:00

## Record provenance

Exact record hash: `1128f92728c12d6fc291e28b4cfcd4b1657dfa606e9688429e9c9280934f90b3`

Source journal: `Research_Cycles/C1585_C1634/journal.json`