{
  "version": 3,
  "identity": "Stable canonical URL identity; confirmed exact SHA and conservative complete normalized-word/metadata/link equality aliases; distinct same-URL versions have stable URL+SHA-derived identity",
  "provenance": "sources/source_versions preserve every supplied generation local path, original URL, checksum, attribution, timestamp if known; no mtime-derived publication dates",
  "completeness": "generation metadata source_download_complete must explicitly be true; otherwise provisional",
  "raw": "Central immutable mirror/objects; named provided originals and generation snapshots outside public site"
}