Ethereum: how to send eip-4844 (transaction blob / transaction type 3)?

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Sending Type 3 Transactions on Ethereum: A Step-by-Step Guide

Since Ethereum 2.0, Type 3 transactions (EIP-4844) have enabled advanced and more flexible smart contract interactions. In this article, we will discuss how to send a Type 3 transaction using blob transactions.

What is the EIP-4844 transaction?

An EIP-4844 transaction is a new transaction type that allows data to be transferred from one address to another without requiring a separate function call. This means you can now interact with smart contracts more efficiently.

How ​​to send a Type 3 transaction

To send a Type 3 transaction in Ethereum, you need to use the eth_sendTransaction method provided by the web3 library. Here is an example of how to do it:

const web3 = require('web3');
const network = new web3.providers.HttpProvider('
const contract_address = "0x..."; // Replace it with your contract address.
const data = 'Hello world!';
const gas_price = 20; // Optional gas price (optional)
web3.eth.sendTransaction({
from: networkaccounts.get('YOUR accountaddresses'), // You need to get the sender's account address
gas: 2000000, // Set high gas limit to avoid gas errors
nonce: web3.utils.toHex(web3.eth.getTransactionCount(network.accounts[0])), // Get current nonce (optional)
value: web3.utils.toWei('1', 'ether'), // Sets the ether value to 1
date,
gasPrice: gasPrice
}, (error, transactionhash) => {
if (error) {
console.error(error);
} else {
console.log(Transaction sent successfully! transactionhash: ${transactionHash});
}
});

Raw API calls with transaction type 3

Here is an example of how to send a transaction of type 3 using the ‘web3’ library:

const web3 = require('web3');
const network = new web3.providers.HttpProvider('
const contract_address = "0x..."; // Replace it with your contract address.
const data = 'Hello world!';
const gas_price = 20; // Optional gas price (optional)
web3.eth.sendTransaction({
from: networkaccounts.get('YOUR accountaddresses'), // You need to get the sender's account address
gas: 2000000, // Set high gas limit to avoid gas errors
nonce: web3.utils.toHex(web3.eth.getTransactionCount(network.accounts[0])), // Get current nonce (optional)
value: web3.utils.toWei('1', 'ether'), // Sets the ether value to 1
date,
gasPrice: gasPrice
}, {
jsonrpc: "2.0",
method: 'eth_sendTransaction'
})

Sending a type 3 transaction with blob data

To send a type 3 transaction with blob data, you need to set the Use eth_sendTransaction method and specify jsonrpc parameter as 2.0. Then you can pass the blob data as a string:

const web3 = require('web3');
const network = new web3.providers.HttpProvider('
const contract_address = "0x..."; // Replace it with your contract address.
const gas_price = 20; // Optional gas price (optional)
const data = Buffer.from('Hello world!', 'utf8'); //Create a string data blob
web3.eth.sendTransaction({
from: networkaccounts.get('YOUR accountaddresses'), // You need to get the sender's account address
jsonrpc: "2.0",
Method: 'eth_sendTransaction'
}, {
Parameters: [date],
GasPrice,
gas: 2000000, // Set high gas limit to avoid gas errors
nonce: web3.utils.toHex(web3.eth.getTransactionCount(network.accounts[0])), // Get current nonce (optional)
Value: web3.utils.toWei('1', 'ether'), // Sets the ether value to 1
Date,
jsonrpcVersion: 2.0
})

Please note that you need to specify “YOUR ACCOUNT ADDRESS” and “YOUR PROJECT ID” with your actual Ethereum account address and project ID.

Hope this helps!