{
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    "tree_size": 270,
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    "leaf_input": "receipt.payload_hash (raw bytes, sequence order)",
    "boundary": "A signed commitment that exactly these receipts, in this order, formed the log at this size — receipts in an export can prove inclusion, and a later checkpoint can prove it extends this one without rewriting history.",
    "journal_head": "dba374f85f69e824f06df49a6ee12655b62a120fde1fe0c7c5b79cfdc209cb9d",
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    "extends": {
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      "first_root_sha256": "7e3bbca9d8b270a324c4c9e6e8c6d24f3b516013a56719dd0779abe171c99a5f",
      "checkpoint_id": "rcpt_24c0262770ad498281edceb05f7d1c3c",
      "proof": [
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    "schema": "attest.receipt/2",
    "sequence": 387,
    "prev_hash": "2949eb6e301313a457570a0e1df1081a67d8dfd20420a64faad1502cc14e41b2",
    "visit_id": "log:270:34ef37a45557d7b6:07cc96d3e9bd",
    "receipt_id": "rcpt_dbdebabd4f77429abfec570abc5a717c",
    "issued_at": "2026-10-15T12:22:35.293908+00:00"
  },
  "payload_hash": "4ab451a78c4ab8a47777b8a255bddb5182e98b6fc0908621fdd546f72c99c0a1",
  "signature": "vVOn8Ctiw33GY/1LcRyiEM1HaxaCq+46cr78RM1XKNmQlX9wloevCfVOC5fFUcsRuY11CxySl046nUab0U2lDw==",
  "public_key": "qRNo7hHrwwi2zNlV7tGCIkakVyU+OobK73/cimDdLcU=",
  "issued_at": "2026-10-15T12:22:35.293908Z"
}