# C434 evidence and continuation checkpoint

Read the report and checkpoint first. C434 is complete. C435 is proposed only.

This is a self-contained incremental calculation packet, continuing from the C433 compact restart kit. It contains the required frozen source bytes, the 528-record regular domain, authenticated predecessor material and the SKL appendix for awareness only. It does not re-execute older research or authorize a later step.

Portable replay from this packet root (Python 3 standard library only):

```bash
python3 evidence/check.py --out replay
python3 evidence/SECOND_METHOD.py --out replay
```

Compare replay/DATA.json, replay/RESULTS.json and replay/SECOND_METHOD_RESULTS.json byte for byte with evidence/. The main verifier authenticates sources and predecessor bindings before calculation. The second implementation regenerates the source grid without importing the main calculation. Both implementations are by the same agent.

ARTIFACT_MANIFEST.json binds every payload except itself; CERTIFICATE.json binds the report, checkpoint, code, data, results and decisions. No external access is needed for replay. Source absence is relative to the finite Noah/Shem/Flood register, not the whole repository. Frozen historical next-step wording is superseded by the current checkpoint.

C432's mislocated E excerpt is corrected by the C434 source cards; its actual calculation used25/23, preserved here under sources/C432_CALCULATION.py. No prior sealed file has been modified.