{
  "height": 115,
  "block_hash": "9be1e9dc3db72b8b7d377eb2827823e3d91cde695215224d4a9e56bd3c873d80",
  "status": "confirmed",
  "bitcoin_block_height": 972988,
  "digest": {
    "alg": "sha256",
    "hex": "9be1e9dc3db72b8b7d377eb2827823e3d91cde695215224d4a9e56bd3c873d80",
    "preimage": "block:{\"at\":\"2026-10-24T23:13:37.917Z\",\"entry_count\":1,\"first_seq\":118,\"height\":115,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":118,\"merkle_root\":\"05bd4d6442153bc9309d6f0b26b797a7d778821ac5f801f8feb9dce07191db4a\",\"prev_hash\":\"9c960fccb93dc591fdcb8e1aab7773f9c641f09dab23b0a41710a7fe52366ff3\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T23:18:07.677Z",
      "updated_at": "2026-10-25T00:23:36.876Z",
      "bitcoin_block_height": 972988,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6add3cb153ad1b4219a4a53624ab6db729b5a8a7609d496c0b1180f75a643cb4a40d8b7d0f85f1151d80efbe"
        },
        {
          "type": "bitcoin",
          "block_height": 972988,
          "merkle_root": "3c587ddc5f28b4732a5eeb27216e13677e4348754375484a771cd576c6e70198"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T23:18:07.677Z",
      "updated_at": "2026-10-25T00:23:36.876Z",
      "bitcoin_block_height": 972988,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6add3cb158cf4363692b603395cab176e3a87849c2c55f2e012b0af4c41ac867cb98cc353db1ebd375ff1c72"
        },
        {
          "type": "bitcoin",
          "block_height": 972988,
          "merkle_root": "3c587ddc5f28b4732a5eeb27216e13677e4348754375484a771cd576c6e70198"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T23:18:07.677Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6add3cb13aca036e14ba49e0de57d70a9f7a92e61891c11680118317915cfe206e032b97104fa778ed5474b7"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/115/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."
}