{
  "height": 34,
  "block_hash": "536950c724f3818f603663bd5a20fef3a4dc586ae7c8e66fbc49d0c630d8efd0",
  "status": "confirmed",
  "bitcoin_block_height": 972955,
  "digest": {
    "alg": "sha256",
    "hex": "536950c724f3818f603663bd5a20fef3a4dc586ae7c8e66fbc49d0c630d8efd0",
    "preimage": "block:{\"at\":\"2026-10-24T16:13:45.196Z\",\"entry_count\":1,\"first_seq\":36,\"height\":34,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":36,\"merkle_root\":\"a4890b6b5a39c47236db6f31adc49226285a9414322016e6d24e946c5f538e25\",\"prev_hash\":\"a2dd0414142f9a489a377157700362482a2f248c742adc90465a9f7d7a9891f8\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T16:16:47.954Z",
      "updated_at": "2026-10-24T18:43:36.793Z",
      "bitcoin_block_height": 972955,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6adcd9f0a91e6ba34e8c4c8d8590a47ff1aafb6fbd1e3b29ce84cbe620ded57564b05c5ed3aa77553dc6094d"
        },
        {
          "type": "bitcoin",
          "block_height": 972955,
          "merkle_root": "3070b4b64d766acc6b8c2ec362acc3415aa2e07e9a5bc2e992ccd9c676ae577b"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T16:16:47.954Z",
      "updated_at": "2026-10-24T18:43:36.793Z",
      "bitcoin_block_height": 972955,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6adcd9f01352a77ca70db9e691c785198c3644e4e4a760d6dd91f75cf963c07e10daf9058b1d14d3b1962eaa"
        },
        {
          "type": "bitcoin",
          "block_height": 972955,
          "merkle_root": "3070b4b64d766acc6b8c2ec362acc3415aa2e07e9a5bc2e992ccd9c676ae577b"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T16:16:47.954Z",
      "updated_at": "2026-10-24T19:53:06.806Z",
      "bitcoin_block_height": 972959,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6adcd9f044b8dbbfd6bc5ca247a3bd45ff0591c74975f0b2e45aa2c6912906d052eb83ff423839b76a0e7165"
        },
        {
          "type": "bitcoin",
          "block_height": 972959,
          "merkle_root": "b24f80d7cd4c29a7c0218013b1bbb0a729ae2ef53b720f465ca9c5b104743f66"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/34/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."
}