{
  "height": 116,
  "block_hash": "2ae49140c36cc7eb6f0dc519a8ddfc535e450f5693be8621ecd71fe0119e6ae4",
  "status": "confirmed",
  "bitcoin_block_height": 972990,
  "digest": {
    "alg": "sha256",
    "hex": "2ae49140c36cc7eb6f0dc519a8ddfc535e450f5693be8621ecd71fe0119e6ae4",
    "preimage": "block:{\"at\":\"2026-10-24T23:18:37.955Z\",\"entry_count\":1,\"first_seq\":119,\"height\":116,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":119,\"merkle_root\":\"d8515eeac4a695c62689d12a676b6c835fd33af39f533037488353854a7f160b\",\"prev_hash\":\"9be1e9dc3db72b8b7d377eb2827823e3d91cde695215224d4a9e56bd3c873d80\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T23:28:07.681Z",
      "updated_at": "2026-10-25T00:31:17.450Z",
      "bitcoin_block_height": 972990,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6add3f086abde7573885fe9476bacebd771dd2fce59016006b89ee913b5e0ee4450ad245aaeb45483a81e624"
        },
        {
          "type": "bitcoin",
          "block_height": 972990,
          "merkle_root": "ca5f37c044e98d67187e068f6b800f744bac4872b6795978fd232d5b796df42e"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T23:28:07.681Z",
      "updated_at": "2026-10-25T00:31:17.450Z",
      "bitcoin_block_height": 972990,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6add3f07d14b7f578a8880e9974fb4d7bb0d5417231de5be8c4a09b395431e7000ba6f5293cf90cc344e8b8f"
        },
        {
          "type": "bitcoin",
          "block_height": 972990,
          "merkle_root": "ca5f37c044e98d67187e068f6b800f744bac4872b6795978fd232d5b796df42e"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T23:28:07.681Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6add3f08d6f0cc5892bf0245c8b3a2eaeb18c6dbfb5a4b5a44b700a8840b3a5144ab065f07bb6eef358bc26d"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/116/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."
}