getblockheader

---

description: Gives the block's hash and returns the header of the block.

getblockheader

Returns a string containing serialized, hex-encoded data for the blockheader "hash" if verbose is set to false. Returns an Object containing details about the blockheader "hash" if verbose is true.

Example Request and Result for getblockheader method

In this section, we provide an illustrative example of a request made to retrieve details contents using the getblockheader method. Additionally, we present the resulting response containing information about the block hash in the chain.

Parameters

Field	Type	Description
blockhash*	numeric	The block hash.

info

The example in this section uses a non-existing project id.

Make sure you replace it with your Bitcoin mainnet or Bitcoin Testnet endpoint when issuing the API calls.

Don't have a project id? Here's a straightforward guide on how to obtain one!

Gives the block's hash and returns the header of the block.

POST https://bitcoin-mainnet.blastapi.io/<project-id>

Request Body

Name	Type	Description
jsonrpc*	string	1.0
id*	string	bwarelabs
method*	string	getblockheader
params*	array<string>	["0000000000000000000454a3a654c88ab5ad9824ca8506c1f7f65cc0ea193503"]

200: OK

{
    "result": {
        "hash": "0000000000000000000454a3a654c88ab5ad9824ca8506c1f7f65cc0ea193503",
        "confirmations": 45595,
        "height": 784665,
        "version": 683581440,
        "versionHex": "28bea000",
        "merkleroot": "d8f4f9edd1c0a37a705289b7202a3d3b67ef46a20f88c27c88fe757aa87f17c5",
        "time": 1681051849,
        "mediantime": 1681049210,
        "nonce": 2450381578,
        "bits": "1705e0b2",
        "difficulty": 47887764338536.25,
        "chainwork": "000000000000000000000000000000000000000045155fb82c72a339d3522688",
        "nTx": 169,
        "previousblockhash": "00000000000000000003a77bfe6ccd653f7db680c4a03fa4b78ac95fa9dd5538",
        "nextblockhash": "000000000000000000028b6ee09959abd8a47ce1487f3854fda0a7ed0b4e85ae"
    },
    "error": null,
    "id": "bwarelabs"
}

Curl Request example

curl --location 'https://bitcoin-mainnet.blastapi.io/<project-id>' \
--header 'Content-Type: application/json' \
--data '{
    "jsonrpc": "1.0",
    "id": "bwarelabs",
    "method": "getblockheader",
    "params": [
        "0000000000000000000454a3a654c88ab5ad9824ca8506c1f7f65cc0ea193503"
    ]
}'