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POST
eth_getTransactionByBlockNumberAndIndex
curl --request POST \
  --url https://tempo-moderato.core.chainstack.com/a25a421add2280d53fdbc23417055501/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_getTransactionByBlockNumberAndIndex",
  "params": [
    "latest",
    "0x0"
  ],
  "id": 1
}
'
{
  "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");

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

Transaction object or null if not found

Last modified on January 23, 2026