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POST
/
eth_getTransactionByBlockNumberAndIndex
curl --request POST \
  --url https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_getTransactionByBlockNumberAndIndex",
  "params": [
    "latest",
    "0x0"
  ],
  "id": 1
}
'
import requests

url = "https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/"

payload = {
    "jsonrpc": "2.0",
    "method": "eth_getTransactionByBlockNumberAndIndex",
    "params": ["latest", "0x0"],
    "id": 1
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'eth_getTransactionByBlockNumberAndIndex',
    params: ['latest', '0x0'],
    id: 1
  })
};

fetch('https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'jsonrpc' => '2.0',
    'method' => 'eth_getTransactionByBlockNumberAndIndex',
    'params' => [
        'latest',
        '0x0'
    ],
    'id' => 1
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_getTransactionByBlockNumberAndIndex\",\n  \"params\": [\n    \"latest\",\n    \"0x0\"\n  ],\n  \"id\": 1\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.post("https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_getTransactionByBlockNumberAndIndex\",\n  \"params\": [\n    \"latest\",\n    \"0x0\"\n  ],\n  \"id\": 1\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://tempo-mainnet.core.chainstack.com/c3ce2925b51f1ed18719fe8a23bbdccf/")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_getTransactionByBlockNumberAndIndex\",\n  \"params\": [\n    \"latest\",\n    \"0x0\"\n  ],\n  \"id\": 1\n}"

response = http.request(request)
puts response.read_body
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": {}
}
Tempo API method that returns information about a transaction by block number and transaction index position.
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​
Parameters

  • blockNumber — the block number (hex) or tag (latest, earliest, pending)
  • transactionIndex — the transaction index position (hex)

​
Response

  • result — the transaction object, or null if not found:
    • hash — transaction hash
    • nonce — sender’s transaction count
    • blockHash — hash of the containing block
    • blockNumber — block number
    • transactionIndex — index in the block
    • from — sender address
    • to — recipient address (null for contract creation)
    • value — value transferred in wei
    • gas — gas limit
    • gasPrice — gas price
    • input — transaction data
    • v, r, s — signature values

​
eth_getTransactionByBlockNumberAndIndex code examples

const ethers = require('ethers');
const NODE_URL = "CHAINSTACK_NODE_URL";
const provider = new ethers.JsonRpcProvider(NODE_URL);

const getTransactionByIndex = async (blockNumber, index) => {
    const tx = await provider.send("eth_getTransactionByBlockNumberAndIndex", [
      blockNumber,
      index
    ]);

    if (tx) {
      console.log(`Transaction at block ${blockNumber}, index ${parseInt(index, 16)}:`);
      console.log(`  Hash: ${tx.hash}`);
      console.log(`  From: ${tx.from}`);
      console.log(`  To: ${tx.to || 'Contract Creation'}`);
      console.log(`  Gas: ${parseInt(tx.gas, 16)}`);
    } else {
      console.log("Transaction not found");
    }
  };

// Get first transaction in latest block
getTransactionByIndex("latest", "0x0");

from web3 import Web3

node_url = "CHAINSTACK_NODE_URL"
web3 = Web3(Web3.HTTPProvider(node_url))

result = web3.provider.make_request("eth_getTransactionByBlockNumberAndIndex", [
    "latest",
    "0x0"
])

tx = result['result']
if tx:
    print(f"Transaction at latest block, index 0:")
    print(f"  Hash: {tx['hash']}")
    print(f"  From: {tx['from']}")
    print(f"  To: {tx.get('to', 'Contract Creation')}")
    print(f"  Gas: {int(tx['gas'], 16)}")
else:
    print("Transaction not found")

curl -X POST "CHAINSTACK_NODE_URL" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionByBlockNumberAndIndex",
    "params": ["latest", "0x0"],
    "id": 1
  }'

Body

application/json
​
jsonrpc
string
default:2.0
​
method
string
default:eth_getTransactionByBlockNumberAndIndex
​
params
any[]

Block number (hex) or tag, and transaction index position

​
id
integer
default:1

Response

200 - application/json

The transaction object

​
jsonrpc
string
​
id
integer
​
result
object | null

Transaction object or null if not found

Last modified on June 22, 2026