{
 "v": "ailedger-checkpoints-bundle-1",
 "checkpoints": [
  {
   "file": "000090_20260930T230100Z.json",
   "head": {
    "v": "ailedger-sth-1",
    "tenant_id": "ailedger",
    "tree_size": 90,
    "root_hash": "8286dcb99c34861d5cd32ccfe3a335ac5df3cc017fc103440c5682c1366a756f",
    "chain_head_hash": "797603516bbbc15f495230744e3444556e88fbd193fd395c85d1bd7356ffa336",
    "last_event_id": "38571760-508a-48f3-ac7f-37fde10e5f07",
    "timestamp": "2026-09-30T23:01:00Z",
    "prev": null,
    "signer": {
     "node_id": "jake_forge_l1",
     "source_did": "did:lattice:node:jake_forge_l1",
     "key_fingerprint": "ed4731d614925428",
     "signer_pubkey": "4fae37fb85ea405d2b5c6475bd5d859e64f4af75388977191c89703c4ce7aacc",
     "canon": "ailedger-sth-1"
    },
    "sig": "vD+2clwvMfEhswaBzyTaBfUQCbEiUgGjIOlUPSp3XPLTIXZle7OrG65KJsfjrbcjgOrebYxXT8aooYM+/cE4Bw=="
   }
  }
 ]
}