{
  "height": 2,
  "block_hash": "e559b6290746f52a50d98b3a64253c2a3b88cca668146edb2eedbbc470a17aa5",
  "status": "confirmed",
  "bitcoin_block_height": 971434,
  "digest": {
    "alg": "sha256",
    "hex": "e559b6290746f52a50d98b3a64253c2a3b88cca668146edb2eedbbc470a17aa5",
    "preimage": "block:{\"at\":\"2026-10-14T16:16:03.628Z\",\"entry_count\":1,\"first_seq\":4,\"height\":2,\"key_id\":\"key_f6a85f595bce8b9f\",\"last_seq\":4,\"merkle_root\":\"06791c5f0e30333aa9a5066f41b708bed5447856f31a75221aeb2baf72ff5834\",\"prev_hash\":\"2bf8af63a980ded3a44fa77dd742726b6506794e3207c447926fe4197c55ed06\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-14T16:16:33.648Z",
      "updated_at": "2026-10-14T18:36:05.912Z",
      "bitcoin_block_height": 971434,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6acfaae33b1f4e8fc2708d33c36bf3b3fa09c3fcc3906eaeaf15ee44080877210bb08cb85017d51885a7fc8b"
        },
        {
          "type": "bitcoin",
          "block_height": 971434,
          "merkle_root": "8b95567a5e7230bd3bb7b1231c50d8f5902bc8adbc2411a75a2da0a6f9f70e4a"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-14T16:16:33.648Z",
      "updated_at": "2026-10-14T18:36:05.912Z",
      "bitcoin_block_height": 971434,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6acfaae264529ef76719c7a141063d627f8706e145a0c5643325524c85a71d04d56b75912ef5039520d98a30"
        },
        {
          "type": "bitcoin",
          "block_height": 971434,
          "merkle_root": "8b95567a5e7230bd3bb7b1231c50d8f5902bc8adbc2411a75a2da0a6f9f70e4a"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-14T16:16:33.648Z",
      "updated_at": "2026-10-14T20:36:05.992Z",
      "bitcoin_block_height": 971452,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6acfaae2fd1e3c70f5eb83e3235c3c2df9240082c72c9a27c667d4f25d1705c78794b0d30ab04065c8c61a64"
        },
        {
          "type": "bitcoin",
          "block_height": 971452,
          "merkle_root": "bb16b9046e4f11363c79a8ab588f23385aefea305764a24e3c13b31fd109e672"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/2/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."
}