{
  "height": 126,
  "block_hash": "48405edcf87a49fd72a9512a73495ff7c9448af488c16a7e4a58b91ec7308cbb",
  "status": "confirmed",
  "bitcoin_block_height": 972999,
  "digest": {
    "alg": "sha256",
    "hex": "48405edcf87a49fd72a9512a73495ff7c9448af488c16a7e4a58b91ec7308cbb",
    "preimage": "block:{\"at\":\"2026-10-25T00:09:07.072Z\",\"entry_count\":1,\"first_seq\":129,\"height\":126,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":129,\"merkle_root\":\"2ab756bf7deb6c2f096ae9069a136f9a94fc61453eb1c1106bc09eec324e8495\",\"prev_hash\":\"8f9e912a576d3f116b620f96ad08ae6628e4e8dcea3deaebb8d4a60677a97736\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-25T00:13:36.872Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6add49b30dc7e3be4265c4573dcdc685bea43cd8b969e0db7ad75de29ee6d1c958557b61e0ac2964948732fb"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-25T00:13:36.872Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6add49b2b78c3516d0a48f5a6818eec7654818e126a0452e44cbe4b2b01bb943443e511d1cfe83d3d16703bf"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-25T00:13:36.872Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6add49b280a654f75adcc96f0811dc186ca514c80538ee946a957cd0bd3b44cddc5b6b4ff26215be963d1761"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/126/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."
}