get_last_block_header - Monero

Example code for the get_last_block_header JSON-RPC method. Complete guide on how to use get_last_block_header JSON-RPC in GetBlock Web3 documentation.

This method returns the header of the most recent block in the chain. Useful as a lightweight alternative to get_info when only block-level metadata is needed.

Parameters

None

Request Example

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "get_last_block_header",
    "params": {},
    "id": "getblock.io"
}'

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "get_last_block_header",
    "params": {},
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "get_last_block_header",
        "params": {},
        "id": "getblock.io"
});

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}

Response Example

{
    "id": "getblock.io",
    "jsonrpc": "2.0",
    "result": {
        "block_header": {
            "block_size": 5500,
            "depth": 0,
            "difficulty": 294558564173,
            "hash": "e22cf75f39ae720e8b71b3d120a5ac03f0db50bba6379e2850975b4859190bc6",
            "height": 3194582,
            "major_version": 16,
            "minor_version": 16,
            "nonce": 1234567890,
            "num_txes": 12,
            "orphan_status": false,
            "prev_hash": "37155cae7d3aa8ca7dc8b9e69e0d1f64b5e3a8b1c2d9e4f5a6b7c8d9e0f1a2b3",
            "reward": 600000000000,
            "timestamp": 1737869732
        },
        "status": "OK",
        "untrusted": false
    }
}

Response Parameters

Field

Type

Description

result.block_header.hash

string

Hash of the latest block

result.block_header.height

unsigned int

Height of the latest block

result.block_header.timestamp

unsigned int

Unix timestamp when the block was mined

result.block_header.difficulty

unsigned int

Mining difficulty at this block

result.block_header.reward

unsigned int

Coinbase reward in atomic units

result.block_header.num_txes

unsigned int

Number of non-coinbase transactions in the block

result.block_header.major_version

unsigned int

Major protocol version

Use Cases

Lightweight chain-tip polling
Displaying network statistics in dashboards
Computing block-time analytics

Error Handling

Status Code

Error Message

Cause

404

Not found

Missing or invalid <ACCESS-TOKEN>

429

Too Many Requests

Rate limit exceeded for your plan

SDK Integration

import monerojs from 'monero-javascript';

const daemon = await monerojs.connectToDaemonRpc('https://go.getblock.io/<ACCESS-TOKEN>/');

// Most methods are exposed directly on the daemon client. For raw access:
const result = await daemon.getDaemonConnection().sendJsonRequest('get_last_block_header', {});
console.log(result);

from monero.backends.jsonrpc import JSONRPCDaemon
from monero.daemon import Daemon

backend = JSONRPCDaemon(host='go.getblock.io', port=443, path='/<ACCESS-TOKEN>/', protocol='https')
daemon = Daemon(backend)

# For methods covered by the typed API, use the daemon attribute directly.
# For raw RPC access:
result = backend.raw_request('get_last_block_header', {})
print(result)

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