{
  "generated_by": "scripts/build_proof_status.py",
  "note": "status is parsed from each .ots file; BITCOIN_CONFIRMED appears only when that proof contains a BitcoinBlockHeaderAttestation",
  "cards": {
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      "date": "2026-07-16",
      "track": "SAR",
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            "https://bob.btc.calendar.opentimestamps.org",
            "https://btc.calendar.catallaxy.com",
            "https://finney.calendar.eternitywall.com"
          ],
          "status": "BITCOIN_CONFIRMED"
        },
        "meta.json": {
          "proof_file": "meta.json.ots",
          "committed_digest": "826e290cc4eabe5ebee98bd5219ae394ce729151ddf1a08b3f0159eb6ec37172",
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            "https://bob.btc.calendar.opentimestamps.org",
            "https://btc.calendar.catallaxy.com",
            "https://finney.calendar.eternitywall.com"
          ],
          "status": "BITCOIN_CONFIRMED"
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      },
      "hash_correction": {
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        "semantic_equivalence": "parsed JSON identical; binary round-trip proves newline-only difference",
        "correction_id": "chc-2026-07-16-sar-card-01"
      }
    },
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      "date": "2026-07-17",
      "track": "DMR",
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          "proof_file": "card.json.ots",
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            "https://bob.btc.calendar.opentimestamps.org",
            "https://btc.calendar.catallaxy.com"
          ],
          "status": "BITCOIN_CONFIRMED"
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          "proof_file": "meta.json.ots",
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            "https://bob.btc.calendar.opentimestamps.org",
            "https://btc.calendar.catallaxy.com"
          ],
          "status": "BITCOIN_CONFIRMED"
        },
        "meta.current.json": {
          "proof_file": "meta.current.json.ots",
          "committed_digest": "ff0eaa1ac59783ec048a303f2243d50ec66b166e02ef256e355fed9c4c3a35ad",
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            "https://bob.btc.calendar.opentimestamps.org",
            "https://btc.calendar.catallaxy.com",
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          "status": "BITCOIN_CONFIRMED"
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      }
    },
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      "date": "2026-07-17",
      "track": "SAR",
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            "https://bob.btc.calendar.opentimestamps.org",
            "https://btc.calendar.catallaxy.com"
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          "status": "BITCOIN_CONFIRMED"
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          "proof_file": "meta.json.ots",
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            "https://btc.calendar.catallaxy.com"
          ],
          "status": "BITCOIN_CONFIRMED"
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          "proof_file": "meta.current.json.ots",
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            "https://bob.btc.calendar.opentimestamps.org",
            "https://btc.calendar.catallaxy.com",
            "https://finney.calendar.eternitywall.com"
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          "status": "BITCOIN_CONFIRMED"
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      "hash_correction": {
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        "newline_only_difference": true,
        "semantic_equivalence": "parsed JSON identical; binary round-trip proves newline-only difference",
        "correction_id": "chc-2026-07-17-sar-card-01"
      }
    },
    "2026-07-18-dmr": {
      "date": "2026-07-18",
      "track": "DMR",
      "artifacts": {
        "card.json": {
          "proof_file": "card.json.ots",
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            "https://bob.btc.calendar.opentimestamps.org",
            "https://btc.calendar.catallaxy.com"
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          "status": "BITCOIN_CONFIRMED"
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          "proof_file": "meta.json.ots",
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            "https://btc.calendar.catallaxy.com"
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          "status": "BITCOIN_CONFIRMED"
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        "semantic_equivalence": "parsed JSON identical; binary round-trip proves newline-only difference",
        "correction_id": "chc-2026-07-18-dmr-card-01"
      }
    },
    "2026-07-18-sar": {
      "date": "2026-07-18",
      "track": "SAR",
      "artifacts": {
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          "status": "BITCOIN_CONFIRMED"
        },
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          "proof_file": "meta.json.ots",
          "committed_digest": "cd3818b36e0a72ebfbefb9d2330a0c73a3af9fca70f37a862b7af1616a739a1c",
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    },
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      "date": "2026-07-19",
      "track": "DMR",
      "artifacts": {
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    },
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    },
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    },
    "2026-07-24-dmr": {
      "date": "2026-07-24",
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