{
  "height": 165,
  "block_hash": "e8352d113a6151816b04af398c511fdbd88d5a9da7f2d9870fcc8ba8df1eb742",
  "status": "pending",
  "bitcoin_block_height": null,
  "digest": {
    "alg": "sha256",
    "hex": "e8352d113a6151816b04af398c511fdbd88d5a9da7f2d9870fcc8ba8df1eb742",
    "preimage": "block:{\"at\":\"2026-10-25T03:29:35.612Z\",\"entry_count\":2,\"first_seq\":202,\"height\":165,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":203,\"merkle_root\":\"42070be8b7dc1d17f7a448695214ed738232e89e8a51906a757335514cb3faf5\",\"prev_hash\":\"60d4f4c71de4cc208b707cbe56fd02d0574440668fa319a56685ce0334e6b895\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "pending",
      "submitted_at": "2026-10-25T03:38:50.514Z",
      "updated_at": "2026-10-25T03:38:50.514Z",
      "bitcoin_block_height": null,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6add79cb4022e5361b4bb3970568a818fa352e03aac2af1773583f93bbe1697e27a0eee240de7f80d47c609f"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "pending",
      "submitted_at": "2026-10-25T03:38:50.514Z",
      "updated_at": "2026-10-25T03:38:50.514Z",
      "bitcoin_block_height": null,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6add79caf45927a386237051f888304163fe108087b84aa3d259d450d8344223e4ee196fdf28573219961ff3"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "pending",
      "submitted_at": "2026-10-25T03:38:50.514Z",
      "updated_at": "2026-10-25T03:38:50.514Z",
      "bitcoin_block_height": null,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6add79cb34696c0bd1d5cfce8be55cae4ff7deec199dd9eb5ac13212528ebeb7b0171e7c2b9bc1f40fac1d84"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/165/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."
}