{
  "height": 114,
  "block_hash": "9c960fccb93dc591fdcb8e1aab7773f9c641f09dab23b0a41710a7fe52366ff3",
  "status": "confirmed",
  "bitcoin_block_height": 972988,
  "digest": {
    "alg": "sha256",
    "hex": "9c960fccb93dc591fdcb8e1aab7773f9c641f09dab23b0a41710a7fe52366ff3",
    "preimage": "block:{\"at\":\"2026-10-24T23:08:37.873Z\",\"entry_count\":1,\"first_seq\":117,\"height\":114,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":117,\"merkle_root\":\"69b9009ad291e2c245602c7e3c9d1f4a67419094ba7960b360f89e86bd963327\",\"prev_hash\":\"33ec762c5a8f0e6b1df4be8dc6587e0c65d2a247b4391ec8b40304cae98a1b16\",\"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": "6add3cb0325aeb9be3328e989b054408340599a28f1f1a11af4297647dac7ce46b9cb9e01d57cd48d030fd7a"
        },
        {
          "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": "6add3cb063775a7c299401a6476fda292e75f74c8030c82443a976ab43ce8f25e1348a3991a3ee47b667355e"
        },
        {
          "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": "6add3cb0818f5a506ad79e33ffe0e9620bcd33936f1cfe69af2b30a655d846b5c43ef671a5dafbafa1d6ee62"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/114/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."
}