{
  "height": 98,
  "block_hash": "1d7cce076f28227693e7dbd4a1dadcb3f7f44b1bfa5ff559d98b71e3ff4df9fa",
  "status": "confirmed",
  "bitcoin_block_height": 972981,
  "digest": {
    "alg": "sha256",
    "hex": "1d7cce076f28227693e7dbd4a1dadcb3f7f44b1bfa5ff559d98b71e3ff4df9fa",
    "preimage": "block:{\"at\":\"2026-10-24T21:43:07.503Z\",\"entry_count\":1,\"first_seq\":101,\"height\":98,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":101,\"merkle_root\":\"ae30845318c9a7b101923a8e38d7d81fba8347b319d699f0538557622da02882\",\"prev_hash\":\"784791391d10b2435bac463b4a7ca2c2dbbabd5115cb830ac486223ed5915a49\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:47:22.442Z",
      "updated_at": "2026-10-24T23:44:06.863Z",
      "bitcoin_block_height": 972981,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6add276ba69192bca0e3db4e596a50bafe94bff992d7e489698cc76b21a2112853e02f1d5f39d8b95415e63f"
        },
        {
          "type": "bitcoin",
          "block_height": 972981,
          "merkle_root": "38006db140107629e73903f45670cc21a32b6213a5e2996331d63754324ae19f"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:47:22.442Z",
      "updated_at": "2026-10-24T23:44:06.863Z",
      "bitcoin_block_height": 972981,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6add276b0342c5b4dae8dd1fe15365cd11a7b45242511d81c8d4d4f5e4e6802f70f7eae83a81f2474823cd03"
        },
        {
          "type": "bitcoin",
          "block_height": 972981,
          "merkle_root": "38006db140107629e73903f45670cc21a32b6213a5e2996331d63754324ae19f"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-24T21:47:22.442Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6add276bd1e39e599a6f434ef0cab862d1294553d456981c5b5b8e7447367ab2633be6584b4dd166aea3be43"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/98/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."
}