Get a block by height

POST

https://sei-tendermint.nownodes.io/

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Returns the block at the requested height, or the latest block when height is omitted.

Body

application/json

JSON-RPC request for block.

jsonrpcstring2.0required

JSON-RPC protocol version.

idintegerrequired

Client request identifier.

methodstringblockrequired

RPC method name.

paramsobjectrequired

Parameters accepted by block.

Show child attributes

heightstring

Block height as a decimal value.

Response

200OK

Response returned by the live Sei endpoint.

400Bad Request

Invalid JSON-RPC request.

Get a block by height

curl -X POST 'https://sei-tendermint.nownodes.io/' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "block",
    "params": {
      "height": "233842496"
    }
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://sei-tendermint.nownodes.io/");
const result = await provider.send("block", {
  "height": "233842496"
});
console.log(result);

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

uri = URI('https://sei-tendermint.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "block",
  "params": {
    "height": "233842496"
  },
  "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://sei-tendermint.nownodes.io/"))
response = w3.provider.make_request("block", {
  "height": "233842496"
})
print(response)

import { createPublicClient, http } from "viem";

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

const result = await client.request({
  method: "block",
  params: {
  "height": "233842496"
},
});

console.log(result);

const endpoint = "https://sei-tendermint.nownodes.io/";
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: "block", params: {
  "height": "233842496"
}, id: 1 });
console.log(result);

const response = await fetch('https://sei-tendermint.nownodes.io/', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "2.0",
      "id": 1,
      "method": "block",
      "params": {
        "height": "233842496"
      }
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "2.0",
  "id": 1,
  "method": "block",
  "params": {
    "height": "233842496"
  }
}

response = requests.post('https://sei-tendermint.nownodes.io/', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://sei-tendermint.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "block",
    "params": {
      "height": "233842496"
    }
  }'

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

Request Body

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "block",
  "params": {
    "height": "233842496"
  }
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "block_id": {
      "hash": "5C7A393701F191D58B78DF6C59614CEE6D57435F3811B5C94035CC9F3D71F591",
      "parts": {
        "total": 1,
        "hash": "475A71BBC2BC5C16701C629FDADD0C41E425D734E6CCF58A8771112E3C11A356"
      }
    },
    "block": {
      "header": {
        "version": {
          "block": "11",
          "app": "0"
        },
        "chain_id": "pacific-1",
        "height": "233842496",
        "time": "2026-09-24T11:14:35.632451401Z",
        "last_block_id": {
          "hash": "2AF8634643C78442DC5CB64616133DE832B352F5DCB434A2B313EB813CA19130",
          "parts": {
            "total": 1,
            "hash": "B7775A12F23AF0B7393C5F12B87EE1E0768C42691276CD55F3C1733914410883"
          }
        },
        "last_commit_hash": "2D0D9FD90DC60D574527CDE4D2DA890C8EAFC825A6F83B0E2CD35B029429AB73",
        "data_hash": "3313785EB9F9004087F27B103DDEEF52F9AEDE0B09CD97D885973EB7181BAAA2",
        "validators_hash": "89F6363C479F2CFE9CF318CF5713B9DB2346AAB180F36116D4115F960F4A46CC",
        "next_validators_hash": "89F6363C479F2CFE9CF318CF5713B9DB2346AAB180F36116D4115F960F4A46CC",
        "consensus_hash": "1E24CCFFDC895ED64854A10BA401678BE9403E3CCD8752EEF8A901BB7EA07A20",
        "app_hash": "9AB1E7C926ED23F439ABC5803833097D5181220BE3F3BBAF26D0C899D45B3E38",
        "last_results_hash": "B073B1F15BF89CA2721B9A92608D2314F780877DAA2B86D2A67D09830DF8B67D",
        "evidence_hash": "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855",
        "proposer_address": "00D66A1CB50A2473D8F011D369ADB117A527072D"
      },
      "data": {
        "txs": [
          "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"
        ]
      },
      "evidence": [],
      "last_commit": {
        "height": "233842495",
        "round": 0,
        "block_id": {
          "hash": "2AF8634643C78442DC5CB64616133DE832B352F5DCB434A2B313EB813CA19130",
          "parts": {
            "total": 1,
            "hash": "B7775A12F23AF0B7393C5F12B87EE1E0768C42691276CD55F3C1733914410883"
          }
        },
        "signatures": [
          {
            "block_id_flag": 2,
            "validator_address": "7482D68A8C68FD7204273223D90864207B1558B5",
            "timestamp": "2026-09-24T11:14:35.348364619Z",
            "signature": "ymPDJVi4AGvt/ivNKdJAdHeQo/2yuUBqnyE+nnUnBhKXBF0Rp1lz5C7/awP9m5g6MNPjHWd20bYxHJME1DBtCQ=="
          }
        ]
      }
    }
  }
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "Invalid params"
  }
}