<!-- source: https://secondlayer.tools/docs/api-reference#proof-burn-block-object -->

## The Burn block proof object

A sortition's consensus-hash preimage and the Bitcoin block it commits to.

| Field | Type | Description |
| --- | --- | --- |
| `consensus_hash` | string | The consensus hash asked about, hex. |
| `burn_height` | integer | Bitcoin height of the sortition. |
| `bitcoin_block_hash` | string | Bitcoin block hash, display order. Equals preimage bytes 4..36. |
| `preimage` | string | Hex bytes whose RIPEMD160(SHA256(·)) is `consensus_hash`. |

```json
{
  "consensus_hash": "e55512fc4a1fd7b3c6b0bcd1b0b2d28a7e3f9c11",
  "burn_height": 970269,
  "bitcoin_block_hash": "00000000000000000001b6b3c5a9e2b5d8f8f1c0a7e4d3b2a1908f7e6d5c4b3a",
  "preimage": "0100000000000000000000000001b6b3c5a9e2b5d8f8f1c0a7e4d3b2a1908f7e6d5c4b3a…"
}
```