Get a block by height or hash.

GET

https://optimism-index.nownodes.io/api/v2/block/{blockId}

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Returns block information with paged transactions. When full transaction details are unavailable, the response can contain only transaction ids.

Blockbook follows the backend main chain. Height lookups always return the current main-chain block. Hash lookups can return a block from another fork only if the backend still keeps it.

Load estimate: Medium; grows mainly with block transaction count and requested page.

Parameters

blockIdstringrequiredpath

Block height or block hash.

pageinteger>= 1query

1-based page index. Values outside safe bounds are sanitized to the closest possible page.

Response

200OK

Block details.

401Unauthorized

Unauthorized: API key is present but rejected by the NOWNodes gateway.

405Method Not Allowed

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

422Unprocessable Entity

Missing API key. The NOWNodes gateway returns plain text for this error.

default

Public API error.

Get a block by height or hash.

curl -X GET 'https://optimism-index.nownodes.io/api/v2/block/{blockId}'

const response = await fetch('https://optimism-index.nownodes.io/api/v2/block/{blockId}', {
  method: 'GET',
});

const data = await response.json();

require 'net/http'
require 'json'

uri = URI('https://optimism-index.nownodes.io/api/v2/block/{blockId}')
request = Net::HTTP::Get.new(uri)

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

import requests

response = requests.get('https://optimism-index.nownodes.io/api/v2/block/{blockId}')
data = response.json()

const response = await fetch('https://optimism-index.nownodes.io/api/v2/block/{blockId}', {
  method: 'GET',
});

const data = await response.json();

const endpoint = "https://optimism-index.nownodes.io/api/v2/block/{blockId}";
const apiKey = "YOUR_API_KEY";

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

  return response.json();
}

const result = await nownodesRequest({});
console.log(result);

const response = await fetch('https://optimism-index.nownodes.io/api/v2/block/{blockId}', {
  method: 'GET',
});

const data = await response.json();

import requests

response = requests.get('https://optimism-index.nownodes.io/api/v2/block/{blockId}')
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://optimism-index.nownodes.io/api/v2/block/{blockId}')
request = Net::HTTP::Get.new(uri)

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

{
  "page": 1,
  "totalPages": 1,
  "itemsOnPage": 1000,
  "hash": "0x8dd378bdf3dd5d90a1303960f7185b4f131ade57192ee98750f6098c4c4ba071",
  "previousBlockHash": "0x68ae135bcca95bdd9a819444ff494d06a72291a07b7ffcd7de5dd91fec688e51",
  "nextBlockHash": "0x801b0058623bf7e9580da13bae249b94f6e80aac6739a249c762ce7bb630f533",
  "height": 157235891,
  "confirmations": 566,
  "size": 22709,
  "time": 1790070559,
  "version": 0,
  "merkleRoot": "",
  "nonce": "0x0000000000000000",
  "bits": null,
  "difficulty": "0x0",
  "txCount": 48,
  "txs": []
}

Unknown API_key

Method Not Allowed

Missing API_key

{
  "error": "Block not found, Block not found"
}