{
  "height": 95,
  "block_hash": "ca8dc3ca91c4ee1ebf948ab5695358e56f753bedffd210b6bb3eaccb4fb23464",
  "status": "confirmed",
  "bitcoin_block_height": 972980,
  "digest": {
    "alg": "sha256",
    "hex": "ca8dc3ca91c4ee1ebf948ab5695358e56f753bedffd210b6bb3eaccb4fb23464",
    "preimage": "block:{\"at\":\"2026-10-24T21:27:19.733Z\",\"entry_count\":1,\"first_seq\":98,\"height\":95,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":98,\"merkle_root\":\"7fbe45088db1906954e816bbf93af9770c2bb83cfd33fc55b41cfa5e036e7a40\",\"prev_hash\":\"cc4ff2aebaa3bd2c017f29b94351aff8ca4c29477ec9768a8e0b0f512bb514f6\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:36:48.984Z",
      "updated_at": "2026-10-24T22:38:37.669Z",
      "bitcoin_block_height": 972980,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6add24f2ed6bb040a649a0972190681f1f9a329077536c7c3b35c1026b48347cd715d3c430013104795d1fde"
        },
        {
          "type": "bitcoin",
          "block_height": 972980,
          "merkle_root": "f665bc2583468bdff0f9264d691ad0935c7f16bfd2dc90e4856c094452883df0"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:36:48.984Z",
      "updated_at": "2026-10-24T22:38:37.669Z",
      "bitcoin_block_height": 972980,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6add24f11a9aacae7e04b81c2dce5e62b88947d188259ba711fc693defe5b78f656e901c055b1e1130fb73db"
        },
        {
          "type": "bitcoin",
          "block_height": 972980,
          "merkle_root": "f665bc2583468bdff0f9264d691ad0935c7f16bfd2dc90e4856c094452883df0"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:36:48.984Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6add24f1ab313cb4830ec55a6bd2d84d9a19d182024db95b6baa2683004f1e204c86fd9e350fd23e4347f6a9"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/95/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."
}