{
  "generated_at": "2026-08-23T23:50:08Z",
  "snapshots": 2528,
  "per_asset": {
    "BTC": 860,
    "GOLD": 827,
    "OIL": 841
  },
  "first_ts": "2026-07-14T16:23:52Z",
  "last_ts": "2026-08-23T23:30:03Z",
  "chain_head": "9257bfb0a2487462837d04e8876cbd08f56c303edc7842ceb88f3e5520f5acde",
  "snapshot_bytes": 315178795,
  "series_sha256": "670ec36535c2a558a5cce4b183be072816a9357311c7ed9896c20a7f35c061d9",
  "note": "chain_n = sha256(chain_{n-1} + sha256(файл) + ts + asset), chain_0 = 64 нуля. Проверка: python3 bin/archive_data.py --verify"
}