{
  "height": 97,
  "block_hash": "784791391d10b2435bac463b4a7ca2c2dbbabd5115cb830ac486223ed5915a49",
  "status": "confirmed",
  "bitcoin_block_height": 972980,
  "digest": {
    "alg": "sha256",
    "hex": "784791391d10b2435bac463b4a7ca2c2dbbabd5115cb830ac486223ed5915a49",
    "preimage": "block:{\"at\":\"2026-10-24T21:37:19.762Z\",\"entry_count\":1,\"first_seq\":100,\"height\":97,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":100,\"merkle_root\":\"ea3ff4b9632ca3cbfb828880ea09dc5bf06d57825551153652def4a53ab2711c\",\"prev_hash\":\"7a2856de40766e4ff405d9d212d7a72bbd74da35722d25e05aab40d32a206c68\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:37:52.447Z",
      "updated_at": "2026-10-24T22:38:37.669Z",
      "bitcoin_block_height": 972980,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6add2531abc3f11605b9f79a91d7f334f9c5cad9dabfef0ffbae650340f40982bebb5c34133cc97e881e7aea"
        },
        {
          "type": "bitcoin",
          "block_height": 972980,
          "merkle_root": "f665bc2583468bdff0f9264d691ad0935c7f16bfd2dc90e4856c094452883df0"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:37:52.447Z",
      "updated_at": "2026-10-24T22:38:37.669Z",
      "bitcoin_block_height": 972980,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6add2530c5245185bd349966472629011603c9dde1e9925777ceff8ffa19bd1a838824fe4ee92d35667ddad7"
        },
        {
          "type": "bitcoin",
          "block_height": 972980,
          "merkle_root": "f665bc2583468bdff0f9264d691ad0935c7f16bfd2dc90e4856c094452883df0"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:37:52.447Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6add25302aaea047f06e4b17522d02a97f4a9346c264e4c96f7c47b1983695be2ae54324b74eceedcf9942bf"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/97/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."
}