eth_sendRawTransaction - opBNB

Example code for the eth_sendRawTransaction JSON-RPC method. Сomplete guide on how to use eth_sendRawTransaction JSON-RPC in GetBlock.io Web3 documentation.

This method broadcasts a signed transaction to the opBNB network for execution. It is the primary method for submitting any state-changing operation — BNB transfers, ERC-20 transfers, smart contract calls, and contract deployments.

Parameters

Parameter	Type	Required	Description
signedTxData	string	Yes	The signed transaction data (hex), produced offline by a signer such as ethers.js, viem, or web3.py

Request Example

cURL

curl --location --request POST 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_sendRawTransaction",
    "params": [
        "0xf86c808504a817c80082520894d85498dbeaeb1df24be52eed4f52eac2fbd56245880de0b6b3a76400008025a04f3a1c..."
    ],
    "id": "getblock.io"
}'

JavaScript (Axios)

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_sendRawTransaction",
    "params": [
        "0xf86c808504a817c80082520894d85498dbeaeb1df24be52eed4f52eac2fbd56245880de0b6b3a76400008025a04f3a1c..."
    ],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data, null, 2)))
    .catch(error => console.log(error));

Python (Requests)

import requests
import json

url = "https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_sendRawTransaction",
    "params": [
        "0xf86c808504a817c80082520894d85498dbeaeb1df24be52eed4f52eac2fbd56245880de0b6b3a76400008025a04f3a1c..."
    ],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

Rust (Reqwest)

use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "eth_sendRawTransaction",
        "params": [
                "0xf86c808504a817c80082520894d85498dbeaeb1df24be52eed4f52eac2fbd56245880de0b6b3a76400008025a04f3a1c..."
        ],
        "id": "getblock.io"
});

    let response = client
        .post("https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x88df016429689c079f3b2f6ad39fa052532c56795b733da78a91ebe6a713944b"
}

Response Parameters

Field	Type	Description
result	string	Transaction hash, used to track inclusion via eth_getTransactionReceipt

Use Cases

• Send BNB transfers

• Execute BEP-20 token transfers

• Interact with DeFi protocols

• Deploy smart contracts

• Execute swaps on opBNB DEXes

Error Handling

Status Code	Error Message	Cause
403	Forbidden	Missing or invalid <ACCESS-TOKEN>
-32602	Invalid params	Request parameters are missing or malformed
-32601	Method not found	The method is not supported by this node
429	Too Many Requests	Rate limit exceeded for your plan
-32000	Insufficient funds for gas	Sender does not have enough BNB to pay gas + value
-32000	Nonce too low	The transaction's nonce has already been used
-32000	Replacement transaction underpriced	Replacement transaction must offer a higher gas price

SDK Integration

Ethers.js

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/');
const wallet = new ethers.Wallet(privateKey, provider);

const tx = await wallet.sendTransaction({
    to: '0xd85498dbeaeb1df24be52eed4f52eac2fbd56245',
    value: ethers.parseEther('0.1')
});
console.log('Tx Hash:', tx.hash);
await tx.wait();
console.log('Confirmed!');

Viem

import { createWalletClient, http, parseEther } from 'viem';
import { opBNB } from 'viem/chains';
import { privateKeyToAccount } from 'viem/accounts';

const account = privateKeyToAccount('0x...');

const client = createWalletClient({
    account,
    chain: opBNB,
    transport: http('https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/')
});

const hash = await client.sendTransaction({
    to: '0xd85498dbeaeb1df24be52eed4f52eac2fbd56245',
    value: parseEther('0.1')
});
console.log('Tx Hash:', hash);