"""Verify the source-connected calculation's distributed numerical artifacts."""
from pathlib import Path
import hashlib,json
ROOT=Path(__file__).resolve().parents[1]
v=json.loads((ROOT/'provenance/source_verification.json').read_text())
for p,h in v['distributed_derived_artifact_sha256'].items():
 actual=hashlib.sha256((ROOT/p).read_bytes()).hexdigest()
 if actual!=h:raise ValueError(f'Checksum mismatch: {p}')
 print('PASS',p)
print('All five independently transferred artifact hashes match the source-session receipts.')