Get the hash of the last finalized block in the canonical chain

POST

https://atleta-testnet.nownodes.io/chain_getFinalizedHead

Authorizations

ApiKeyAuthApiKeyAuth

API_key string

NOWNodes API key passed in the api-key header.

Returns the hash of the latest finalized block in the blockchain.

Body

application/json

API_keystring

jsonrpcstring

idstring

methodstring

paramsArray<any>

Response

200OK

The hash of the last finalized block.

400Bad Request

Bad Request

500Internal Server Error

Internal Server Error

Get the hash of the last finalized block in the canonical chain

curl -X POST 'https://atleta-testnet.nownodes.io/chain_getFinalizedHead' \
  -H 'Content-Type: application/json' \
  -d '{
    "API_key": "your_API_key",
    "jsonrpc": "2.0",
    "id": "test",
    "method": "chain_getFinalizedHead",
    "params": []
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://atleta-testnet.nownodes.io/chain_getFinalizedHead");
const result = await provider.send("chain_getFinalizedHead", []);
console.log(result);

require 'eth'
require 'json'
require 'net/http'

uri = URI('https://atleta-testnet.nownodes.io/chain_getFinalizedHead')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "chain_getFinalizedHead",
  "params": [],
  "id": 1
}'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

puts JSON.parse(response.body)

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://atleta-testnet.nownodes.io/chain_getFinalizedHead"))
response = w3.provider.make_request("chain_getFinalizedHead", [])
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://atleta-testnet.nownodes.io/chain_getFinalizedHead"),
});

const result = await client.request({
  method: "chain_getFinalizedHead",
  params: [],
});

console.log(result);

const endpoint = "https://atleta-testnet.nownodes.io/chain_getFinalizedHead";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({ jsonrpc: "2.0", method: "chain_getFinalizedHead", params: [], id: 1 });
console.log(result);

const response = await fetch('https://atleta-testnet.nownodes.io/chain_getFinalizedHead', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "API_key": "your_API_key",
      "jsonrpc": "2.0",
      "id": "test",
      "method": "chain_getFinalizedHead",
      "params": []
    }),
});

const data = await response.json();

import requests

payload = {
  "API_key": "your_API_key",
  "jsonrpc": "2.0",
  "id": "test",
  "method": "chain_getFinalizedHead",
  "params": []
}

response = requests.post('https://atleta-testnet.nownodes.io/chain_getFinalizedHead', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://atleta-testnet.nownodes.io/chain_getFinalizedHead')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "API_key": "your_API_key",
    "jsonrpc": "2.0",
    "id": "test",
    "method": "chain_getFinalizedHead",
    "params": []
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

Request Body

{
  "API_key": "your_API_key",
  "jsonrpc": "2.0",
  "id": "test",
  "method": "chain_getFinalizedHead",
  "params": []
}

200

{
  "jsonrpc": "2.0",
  "result": "0x86b1cd818c8fca2a3ac5dbc86e8adfc5279edb7ae8ee024b09c9504034c3a251",
  "id": "test"
}

Documentation

How to migrate to NOWNodes

Get the hash of the last finalized block in the canonical chain

Authorizations

Body

Response