{
  "_self": {
    "what": "The current ledger chain head for this version. A separately published copy of this exact string is the external anchor.",
    "anchor_body": "c644ca871094b43d9794d2ccbdda11b442cb40e401070b6b076442648a7fd09e",
    "recipe": "head_0 = \"genesis\"; head_i = SHA256( head_(i-1) ␟ leaf_digest_i ); head = head_n"
  },
  "version": 2,
  "head": "c644ca871094b43d9794d2ccbdda11b442cb40e401070b6b076442648a7fd09e",
  "checkpoint_hash": "64a843c8545c46cff3ba3fb613bceafb448f521f3a79ca6c284b34a58e05f0b1",
  "seq": 26,
  "event_count": 213972,
  "cutoff_ts": "2026-07-17T07:42:13-07:00",
  "sealed_at": "2026-07-17T14:42:14.367Z",
  "anchor_instructions": "Email this head string (or the full JSON) from an account whose domain publishes a DKIM key. Archive the selector public key at send time. Anchor through >=2 independent domains. Then this head is externally immutable: rewriting the ledger would require forging every anchoring provider's signature."
}