{
  "height": 32,
  "block_hash": "41ff869675b3cce674b008390d3fb61c00c1da519fed333d07420b1176a7c341",
  "status": "confirmed",
  "bitcoin_block_height": 972955,
  "digest": {
    "alg": "sha256",
    "hex": "41ff869675b3cce674b008390d3fb61c00c1da519fed333d07420b1176a7c341",
    "preimage": "block:{\"at\":\"2026-10-24T16:03:44.951Z\",\"entry_count\":1,\"first_seq\":34,\"height\":32,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":34,\"merkle_root\":\"b002972191b5de5a69f6baf1374b4ec5a46e481c1a1a009ffd53c4fab7baada7\",\"prev_hash\":\"41e07af25398215a6f23434034c8a162484b2d2244e2e9f22f40d47908a46889\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T16:13:14.712Z",
      "updated_at": "2026-10-24T18:43:36.793Z",
      "bitcoin_block_height": 972955,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6adcd91bbac89d96ca84a6e1f52b298117955f5557efdc82718c5e00c07cffa84bf035bcc9a497f16da6e05f"
        },
        {
          "type": "bitcoin",
          "block_height": 972955,
          "merkle_root": "3070b4b64d766acc6b8c2ec362acc3415aa2e07e9a5bc2e992ccd9c676ae577b"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T16:13:14.712Z",
      "updated_at": "2026-10-24T18:43:36.793Z",
      "bitcoin_block_height": 972955,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6adcd91b3c0846a29e1c143313cd361697cfd439604b721d131700c0dc87202586947cfa9ca24b13ae413418"
        },
        {
          "type": "bitcoin",
          "block_height": 972955,
          "merkle_root": "3070b4b64d766acc6b8c2ec362acc3415aa2e07e9a5bc2e992ccd9c676ae577b"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T16:13:14.712Z",
      "updated_at": "2026-10-24T19:53:06.806Z",
      "bitcoin_block_height": 972959,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6adcd91bcc4be922f642f1caea100ebdec3172e2cb0fcd758951925f08fbd7d913960e69336a855d5d8ef5e9"
        },
        {
          "type": "bitcoin",
          "block_height": 972959,
          "merkle_root": "b24f80d7cd4c29a7c0218013b1bbb0a729ae2ef53b720f465ca9c5b104743f66"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/32/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."
}