POST
/
0a9d79d93fb2f4a4b1e04695da2b77a7
curl --request POST \
  --url https://nd-422-757-666.p2pify.com/0a9d79d93fb2f4a4b1e04695da2b77a7 \
  --header 'Content-Type: application/json' \
  --data '{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_getBlockTransactionCountByHash",
  "params": [
    "0x633a90413361fe1889d1e5ab4cb222608d224c458b30289b8390496a3fab29d8"
  ]
}'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}

Ethereum API method that returns the number of transactions in a block specified by block hash. This information can be useful for analytics purposes.

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​
Parameters

  • hash — the block hash of the requested block.

​
Response

  • quantity — an integer value representing how many transactions are included in the block.

​
eth_getBlockTransactionCountByHash code examples

Learn more about the ChainstackProvider in ethers.js: ethers ChainstackProvider Documentation.

const ethers = require("ethers");



// Create a ChainstackProvider instance for Ethereum mainnet

const chainstack = new ethers.ChainstackProvider("mainnet");



const getTransactionsCount = async (blockHash) => {

  const count = await chainstack.send("eth_getBlockTransactionCountByHash", [

    blockHash,

  ]);

  console.log(count);

};



getTransactionsCount(

  "0xbff1ae920dd96597dd486d68b2b7c045c3bdc6d6c64dfeb9759499c9e8ca6737"

);

​
Use case

eth_getBlockTransactionCountByHash is a useful tool for analyzing transaction volume on the Ethereum blockchain. For instance, a new block is generated on the Ethereum blockchain every 12 seconds, resulting in approximately 300 blocks per hour. Using the web3.js library, one can inspect the past 300 blocks starting from the latest block and use eth_getBlockTransactionCountByHash to find the number of transactions in each block.

index.js
const { Web3 } = require("web3");

const NODE_URL = "CHAINSTACK_NODE_URL";

const web3 = new Web3(NODE_URL);



async function retrieveTransactionsCount() {

    // Get the current block number

    const currentBlockNumber = await web3.eth.getBlockNumber();

  

    // Calculate the block number from one hour ago

    const oneHourAgoBlockNumber = currentBlockNumber - 300n; // 300 blocks/hr on average on the Ethereum mainnet

    

    // Initialize a variable to store the total number of transactions

    let totalTransactionCount = 0;

  

    // Loop through all blocks from the current block number to the block number from one hour ago

    for (let block = currentBlockNumber; block > oneHourAgoBlockNumber; block--) {

  

      // Get the hash of each block

      const getBlockHash = await web3.eth.getBlock(block, false);

      const blockHash = getBlockHash.hash

  

      // Get the number of transactions in this block using each hash

      const transactionCount = await web3.eth.getBlockTransactionCount(blockHash);

  

      // Add the number of transactions in this block to the total

      totalTransactionCount += Number(transactionCount);

  

      console.log(`Block #${block} has ${transactionCount} transactions.`);

    }

  

    console.log(`The total number of transactions in the previous hour is: ${totalTransactionCount}`);

  }

  

  

  retrieveTransactionsCount();

This example connects to an Ethereum node using the web3.js library. The retrieveTransactionsCount function gets the current block number, calculates the block number from one hour ago, and uses a for loop to iterate through all blocks in that range.

The function then retrieves the hash of each block and the number of transactions in each block and adds it to a total transaction count. The final result, the total number of transactions in the previous hour, is logged to the console.

This is a good example of how you can combine different methods.

Body

application/json
​
id
integer
default:1
​
jsonrpc
string
default:2.0
​
method
string
default:eth_getBlockTransactionCountByHash
​
params
string[]

The block hash identifier.

Response

200 - application/json
The block information
​
jsonrpc
string
​
id
integer
​
result
string