{
  "height": 47,
  "block_hash": "efb002fdee191599d5ce485eae5f00924bb351e060c5b06bde0c160dabdf6f3a",
  "status": "confirmed",
  "bitcoin_block_height": 972955,
  "digest": {
    "alg": "sha256",
    "hex": "efb002fdee191599d5ce485eae5f00924bb351e060c5b06bde0c160dabdf6f3a",
    "preimage": "block:{\"at\":\"2026-10-24T17:26:01.899Z\",\"entry_count\":1,\"first_seq\":49,\"height\":47,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":49,\"merkle_root\":\"cd99edd33ecca2d37a458a790b2ed07ea3bf02592be3326666eba303e5e060a6\",\"prev_hash\":\"fae7bc369cf800f3ac5fcbf08fffed2bcb11c3aebd9c9176c82e19a0fd4dfd7a\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T17:30:31.657Z",
      "updated_at": "2026-10-24T18:30:31.668Z",
      "bitcoin_block_height": 972955,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6adceb39a4e250a11c755ce35490bf539cd34d77eedcb649466d456322c6db791f301fada73bc1d97b03b4be"
        },
        {
          "type": "bitcoin",
          "block_height": 972955,
          "merkle_root": "3070b4b64d766acc6b8c2ec362acc3415aa2e07e9a5bc2e992ccd9c676ae577b"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T17:30:31.657Z",
      "updated_at": "2026-10-24T18:30:31.668Z",
      "bitcoin_block_height": 972955,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6adceb390b3fd17e67f73279946a4cf80c41210994e7b9ec4692fe356411447387ec64f2d85d417cadc64fd7"
        },
        {
          "type": "bitcoin",
          "block_height": 972955,
          "merkle_root": "3070b4b64d766acc6b8c2ec362acc3415aa2e07e9a5bc2e992ccd9c676ae577b"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T17:30:31.657Z",
      "updated_at": "2026-10-24T19:53:06.806Z",
      "bitcoin_block_height": 972959,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6adceb39fb8ed48a5ddf20460f92c2fd21da350d71ee2737ab1e761426bebed2fb3d691c582178836a5476e1"
        },
        {
          "type": "bitcoin",
          "block_height": 972959,
          "merkle_root": "b24f80d7cd4c29a7c0218013b1bbb0a729ae2ef53b720f465ca9c5b104743f66"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/47/anchor.ots",
  "how_to_verify": "Download the .ots proof and run `ots verify -d <block_hash> <file>.ots` with the OpenTimestamps client, which checks the Bitcoin attestation against Bitcoin block headers. The digest is the block hash: sha256 of digest.preimage, the text \"block:\" followed by the canonical block header, which is the same header the issuer signs."
}