{
  "height": 62,
  "block_hash": "e04838348f244c74669641b055cc6fc76685343306c4b278efc44a17c7da6797",
  "status": "confirmed",
  "bitcoin_block_height": 972968,
  "digest": {
    "alg": "sha256",
    "hex": "e04838348f244c74669641b055cc6fc76685343306c4b278efc44a17c7da6797",
    "preimage": "block:{\"at\":\"2026-10-24T18:41:02.888Z\",\"entry_count\":1,\"first_seq\":64,\"height\":62,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":64,\"merkle_root\":\"c8ee5b530dfc029e6b7608602a570455045e46dca1efaa21d5bace263722d8ec\",\"prev_hash\":\"d4e278b8b5b07468a5fda5ada17ed0c9bc9c9de1547cd7b672e424c6860695f3\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T18:43:36.793Z",
      "updated_at": "2026-10-24T21:37:52.447Z",
      "bitcoin_block_height": 972968,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6adcfc5ac7729f0a6163215e12ef46e582a08d38e27978079a1c77c847a573a967645a54a882260ffeb261de"
        },
        {
          "type": "bitcoin",
          "block_height": 972968,
          "merkle_root": "2a0afd342bd007efb1fc07905f9b010bb0dbfc7c9b9c619cb1902d45b6d9cff3"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T18:43:36.793Z",
      "updated_at": "2026-10-24T21:37:52.447Z",
      "bitcoin_block_height": 972968,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6adcfc59bdf41eb7f4bc22bb873f8bad121215d6845b817eaeab4059dbfc2a4fe20bf766c8b1319dd9e77577"
        },
        {
          "type": "bitcoin",
          "block_height": 972968,
          "merkle_root": "2a0afd342bd007efb1fc07905f9b010bb0dbfc7c9b9c619cb1902d45b6d9cff3"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T18:43:36.793Z",
      "updated_at": "2026-10-25T02:49:17.524Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6adcfc594e66f8bd96c6c1cd4ffa2d317b35c401cf088b6923602b571ee940e28703450d7554b8a46d95b4e8"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/62/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."
}