{
  "day": "2026-10-20",
  "anchor_id": 1967,
  "anchor_hash": "99d7a44e53dc5a74c93ee42755dd39e088c024bc7f6b09cf857aefda2a7ed873",
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  "anchor_format": 2,
  "created_at": "2026-10-20T00:14:11.000Z",
  "hourly_tsa": {
    "url": "http://timestamp.digicert.com",
    "gen_time": "2026-10-20T00:14:11.000Z",
    "verify_status": "verified"
  },
  "daily_tsa": {
    "url": "https://freetsa.org/tsr",
    "gen_time": "2026-10-20T00:14:11.000Z",
    "verify_status": "verified",
    "tsq_file": "2026-10-20.tsq",
    "tsr_file": "2026-10-20.tsr"
  },
  "bitcoin": {
    "status": "pending",
    "anchor_id": 1967,
    "anchor_hash": "99d7a44e53dc5a74c93ee42755dd39e088c024bc7f6b09cf857aefda2a7ed873",
    "height": null,
    "block_hash": null,
    "block_time": null,
    "block_header": null,
    "ots_file": "2026-10-20.ots"
  },
  "drand": {
    "round": 33217295,
    "signature": "b07e19483d0f31dd1a28cbaceba7e4ad153cf73d2b80c1fd3d489a585722f4867e6416485f9180af14fded37e62036d2"
  },
  "nist": {
    "uri": "https://beacon.nist.gov/beacon/2.0/chain/2/pulse/1990942",
    "output": "4c78c2bcbfa6d0f3d8d8cd32df92f5c11c87b501997ea45626707eb958dec087a1ac41c38144b12e1645f684dee28479809c71ae4e7083ea8c9056596a5ab4a6"
  },
  "windows": [
    {
      "table": "validations",
      "from_ref": 1473,
      "to_ref": 1472,
      "leaf_count": 0,
      "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
    },
    {
      "table": "scan_annotations",
      "from_ref": 3,
      "to_ref": 2,
      "leaf_count": 0,
      "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
    },
    {
      "table": "tamper_tag_meta",
      "from_ref": 4,
      "to_ref": 3,
      "leaf_count": 0,
      "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
    },
    {
      "table": "oncemark_tag_meta",
      "from_ref": 3,
      "to_ref": 2,
      "leaf_count": 0,
      "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
    }
  ],
  "anchors": [
    {
      "anchor_id": 1967,
      "anchor_format": 2,
      "prev_anchor_hash": "995aba0e135ef442a31790d1de191aec972e98e75606c69ebdb311a59d7862a0",
      "anchor_hash": "99d7a44e53dc5a74c93ee42755dd39e088c024bc7f6b09cf857aefda2a7ed873",
      "created_at": "2026-10-20T00:14:11.000Z",
      "nist": {
        "uri": "https://beacon.nist.gov/beacon/2.0/chain/2/pulse/1990942",
        "output": "4c78c2bcbfa6d0f3d8d8cd32df92f5c11c87b501997ea45626707eb958dec087a1ac41c38144b12e1645f684dee28479809c71ae4e7083ea8c9056596a5ab4a6"
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      "drand": {
        "round": 33217295,
        "signature": "b07e19483d0f31dd1a28cbaceba7e4ad153cf73d2b80c1fd3d489a585722f4867e6416485f9180af14fded37e62036d2"
      },
      "windows": [
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          "table": "validations",
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          "leaf_count": 0,
          "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        },
        {
          "table": "scan_annotations",
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          "to_ref": 2,
          "leaf_count": 0,
          "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        },
        {
          "table": "tamper_tag_meta",
          "from_ref": 4,
          "to_ref": 3,
          "leaf_count": 0,
          "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        },
        {
          "table": "oncemark_tag_meta",
          "from_ref": 3,
          "to_ref": 2,
          "leaf_count": 0,
          "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        }
      ]
    },
    {
      "anchor_id": 1968,
      "anchor_format": 2,
      "prev_anchor_hash": "99d7a44e53dc5a74c93ee42755dd39e088c024bc7f6b09cf857aefda2a7ed873",
      "anchor_hash": "88bddaa6d4f02b87c9eec12cd6d57240ff85eebb7b9030bef20dff9fe299c523",
      "created_at": "2026-10-20T01:14:38.000Z",
      "nist": {
        "uri": "https://beacon.nist.gov/beacon/2.0/chain/2/pulse/1991003",
        "output": "9799a7f54c6cfc8ae2b23a5e586734eb56b8d43a007eb47c9951107fd9dea54d3660a2b77a6a6acf7fc770fbfeae053f6b4072a66dbe94b8fcf12c09a6ca6289"
      },
      "drand": {
        "round": 33218504,
        "signature": "a187947772e9ae38e33932fcc33868e6fca13b1e380964f24fa3167ff440a01cf471f7d4e532bd8f465d2892a55c3be4"
      },
      "windows": [
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          "table": "validations",
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          "leaf_count": 0,
          "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        },
        {
          "table": "scan_annotations",
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          "leaf_count": 0,
          "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        },
        {
          "table": "tamper_tag_meta",
          "from_ref": 4,
          "to_ref": 3,
          "leaf_count": 0,
          "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        },
        {
          "table": "oncemark_tag_meta",
          "from_ref": 3,
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          "leaf_count": 0,
          "merkle_root": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        }
      ]
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  ],
  "published_at": "2026-10-20T01:14:39.955Z",
  "verification": {
    "anchor_hash_v2": "anchor_hash is SHA-256 over the UTF-8 bytes of these newline-joined parts in order, the literal evidence-anchor-v2, the previous anchor hash in hex or empty, the NIST pulse URI or empty, the NIST pulse output in hex or empty, the drand chain hash, the drand round number, and the drand signature in hex (all three present only when the signature verified, otherwise all empty), and one part per table in the order validations, scan_annotations, tamper_tag_meta, oncemark_tag_meta, each written as table:from-to:count:root with the window bounds, the leaf count, and the RFC 6962 Merkle root in hex.",
    "drand": {
      "chain_hash": "52db9ba70e0cc0f6eaf7803dd07447a1f5477735fd3f661792ba94600c84e971",
      "public_key": "83cf0f2896adee7eb8b5f01fcad3912212c437e0073e911fb90022d3e760183c8c4b450b6a0a6c3ac6a5776a2d1064510d1fec758c921cc22b0e17e63aaf4bcb5ed66304de9cf809bd274ca73bab4af5a6e9c76a4bc09e76eae8991ef5ece45a",
      "genesis_time": 1692803367,
      "period": 3,
      "scheme": "bls-unchained-g1-rfc9380"
    },
    "tsa_bundles": {
      "timestamp.digicert.com": "https://cacerts.digicert.com/DigiCertTrustedRootG4.crt.pem",
      "timestamp.sectigo.com": "http://crt.sectigo.com/USERTrustRSACertificationAuthority.crt",
      "freetsa.org": "https://freetsa.org/files/cacert.pem"
    },
    "mirror": "https://anchor-heartbeat.nfcmint.workers.dev"
  }
}