{
  "height": 130,
  "block_hash": "96c779e2af75e8bb09ef2b62607679da0df925c729d856cb261ad9e26dc9671b",
  "status": "confirmed",
  "bitcoin_block_height": 972999,
  "digest": {
    "alg": "sha256",
    "hex": "96c779e2af75e8bb09ef2b62607679da0df925c729d856cb261ad9e26dc9671b",
    "preimage": "block:{\"at\":\"2026-10-25T00:24:07.200Z\",\"entry_count\":1,\"first_seq\":133,\"height\":130,\"key_id\":\"key_41eb7b6d1b11968a\",\"last_seq\":133,\"merkle_root\":\"5b420b507df79e78c428b767dc93efb0b49cf49f74caf84a0d8768096acf5582\",\"prev_hash\":\"b70e13f54b344dffc85cc46a79341f7c5de00b35dda4da90b3cbfc766528c534\",\"v\":1}"
  },
  "calendars": [
    {
      "calendar": "https://a.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-25T00:31:17.450Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://alice.btc.calendar.opentimestamps.org",
          "commitment": "6add4dd6db7561697626a889f5410dc899caefcebb195dda93233e8d5b94a542260cf824202998480cac5423"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    },
    {
      "calendar": "https://b.pool.opentimestamps.org",
      "status": "confirmed",
      "submitted_at": "2026-10-25T00:31:17.450Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://bob.btc.calendar.opentimestamps.org",
          "commitment": "6add4dd5b4147e8669cba95ca8d150398bf75fcb86e67d41cb098bb26e9291aa0a3ac02b0c2028d001bf3f70"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    },
    {
      "calendar": "https://finney.calendar.eternitywall.com",
      "status": "confirmed",
      "submitted_at": "2026-10-25T00:31:17.450Z",
      "updated_at": "2026-10-25T02:39:47.523Z",
      "bitcoin_block_height": 972999,
      "attestations": [
        {
          "type": "pending",
          "uri": "https://finney.calendar.eternitywall.com",
          "commitment": "6add4dd6fcc082fbbe0c1dfda6c385f82ff02ba3432318b44593dccbf6e76f67578e08f8c61082f413632a22"
        },
        {
          "type": "bitcoin",
          "block_height": 972999,
          "merkle_root": "ae0e717f0d642956016a8572888d23fb045efcac654b542c5ac908707f3b5590"
        }
      ]
    }
  ],
  "proof_url": "https://www.rightshold.com/v1/ledger/blocks/130/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."
}