Retrieves block header for given block id.

Parameters

Name	Required	Type	Detail
`block_id`	✅	String	Block identifier. Can be one of: "head" (canonical head in node's view), "genesis", "finalized", <hex encoded blockRoot with 0x prefix>.

Result

Returns block header for given block id.

Example

Request

curl <your-endpoint>/eth/v1/beacon/headers/head

Return

{
    "data": {
        "root": "0xf244ef8dab341420ada9bca7c20e0d4b1502a3217933bb72f72c5fd3e5499f71",
        "canonical": true,
        "header": {
            "message": {
                "slot": "4790706",
                "proposer_index": "278281",
                "parent_root": "0x51985f5c928588d3df8010ae2c0076d33a443ab9152d1ca972f135fc34907579",
                "state_root": "0xc955329924ea090030f0c2342c3feb5266758603c6221f4991ae3cbe87101683",
                "body_root": "0x5a90aa40b25f3b89bcf65242220987241689be43ceefc819f60f6593059d9a86"
            },
            "signature": "0xb1d089f97345c074bf4e208ce855a61d84eed3f2dbeb2fe27167389b6898060ea7c023f369dde821ee63b4f31cbd24cf177dbe74982bacacfe457203f0dfe5441e28b56a994f82a14f8e419047f8882e06c36912b8158e7ecaf9afee3f5c19e4"
        }
    },
    "execution_optimistic": false
}