getLatestBlockhash RPC Method

Please note that this method is only available in solana-core v1.9 or newer. Please use getRecentBlockhash for solana-core v1.8

Parameters

object

object

The configuration object with the following fields:

commitment

string

The level of commitment required for the query. The options include:

minContextSlot

integer

The minimum slot at which the request can be evaluated

Returns

result

The RpcResponse JSON object with the following fields:

context

The information about the current state of the program

apiVersion

The version of the Solana RPC API to use

slot

An integer representing the slot for which to retrieve the fee calculator

value

A JSON object with the following fields:

blockhash

The block hash encoded as base-58 string

lastValidBlockHeight

The last block height at which the blockhash will be valid

Request

curl https://docs-demo.solana-mainnet.quiknode.pro/ \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","id":1, "method":"getLatestBlockhash", "params": [{"commitment":"processed"}]}'

require "uri"
require "json"
require "net/http"

url = URI("https://docs-demo.solana-mainnet.quiknode.pro/")

https = Net::HTTP.new(url.host, url.port)
https.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = "application/json"
request.body = JSON.dump({
  "jsonrpc": "2.0",
  "id": 1,
  "method": "getLatestBlockhash",
  "params": [
    {
      "commitment": "processed"
    }
  ]
})

response = https.request(request)
puts response.read_body

import { createSolanaRpc } from "@solana/kit";

(async () => {
  const solanaRpc = createSolanaRpc("https://docs-demo.solana-mainnet.quiknode.pro/");
  
  try {
    const latestBlockhash = await solanaRpc.getLatestBlockhash().send();
    console.log(latestBlockhash);
  } catch (error) {
    console.error("Error fetching latest blockhash:", error);
  }
})();

const web3 = require("@solana/web3.js");
(async () => {
  const solana = new web3.Connection("https://docs-demo.solana-mainnet.quiknode.pro/");
  console.log(await solana.getLatestBlockhash());
})();

from solana.rpc.api import Client
solana_client = Client("https://docs-demo.solana-mainnet.quiknode.pro/")
print(solana_client.get_latest_blockhash())

use reqwest::header;
use reqwest::Client;
use std::error::Error;

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
    let mut headers = header::HeaderMap::new();
    headers.insert("Content-Type", "application/json".parse().unwrap());

    let client = Client::new();
    let json_data = r#"
    {
        "jsonrpc": "2.0",
        "id": 1,
        "method": "getLatestBlockhash",
        "params": [
            {
                "commitment": "processed"
            }
        ]
    }
    "#;
    let response = client
        .post("https://docs-demo.solana-mainnet.quiknode.pro/")
        .headers(headers)
        .body(json_data)
        .send()
        .await?; 

    let body = response.text().await?;
    println!("{}", body);

    Ok(())
}

Response

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "slot": 2792
    },
    "value": {
      "blockhash": "EkSnNWid2cvwEVnVx9aBqawnmiCNiDgp3gUdkDPTKN1N",
      "lastValidBlockHeight": 3090
    }
  },
  "id": 1
}

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