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How to get events from block to block

Prerequisites​

Before getting started, make sure you have the following ready:

  • Node v.14+
  • NPM

Step 1: Setup Blocklens​

First register your Blocklens account and get your Blocklens API Key.

Once you have your Blocklens API Key, install the Blocklens SDK in your project.

npm i blocklens-sdk

Step 2: Get events from block to block​

In order to get events from block to block, Blocklens provides you a getEventsFromBlockToBlock endpoint to do so.

Here you'll need parameters: from_block, to_block.

Once you've obtained all the from_block, to_block, you can copy the following code:

import Blocklens from "blocklens-sdk";

const blocklens = new Blocklens();
blocklens.init({ apiKey: "YOUR_API_KEY" });

const runApis = async () => {
  const response = await blocklens.ETH_MAINNET.getEventsFromBlockToBlock({"from_block":18246150,"to_block":18246151});
  console.log(response);
};

runApis();

Step 3: Run the script​

ts-node index.ts

In your terminal, you should see the following JSON response with the data: In your terminal, you should see the following JSON response with the data blocks:

{
  "page": 1,
  "limit": 20,
  "cursor": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6MTgyNDYxNTEwMTUwMDAwMzIwLCJwYWdlIjoxLCJmcm9tX2Jsb2NrIjoxODI0NjE1MCwidG9fYmxvY2siOjE4MjQ2MTUxLCJpYXQiOjE2OTcwODQ2NDR9.vY2H9Bw4eePr0hw9IOqwEY0y0WOmue7Uz2y3NrQ9IqU",
  "total_items": 1,
  "data": [
    {
      "tx_hash": "0x49c0daf9d1f0611d4b0844723badb703f15004e56829129346b7334a9eb3df5b",
      "tx_index": 169,
      "contract_address": "0xb584D4bE1A5470CA1a8778E9B86c81e165204599",
      "block_hash": "0x28f7522cc52594826d9853bf25d65ebb382650320ad791cd5434d955a9110d82",
      "block_number": 18246151,
      "timestamp": 1696048283,
      "log_index": 332,
      "data": "0x00000000000000000000000000000000000000000000000000000574fbde6000",
      "topic0": "0x90890809c654f11d6e72a28fa60149770a0d11ec6c92319d6ceb2bb0a4ea1a15",
      "topic1": "0x00000000000000000000000020d0c35637f6d7d458b836136068ca8d1e761e7d",
      "topic2": "0x0000000000000000000000000000000000000000000000000000000000000064",
      "topic3": null,
      "removed": "false"
    }
  ]
}

Congratulations 🥳 you just found the get events from block to block on multiple chains with only a few lines of code using the Blocklens Wallet API!

API Reference​

If you want to know more details on the endpoint and optional parameters, check out:

Support​

If you face any trouble following the tutorial, feel free to reach out to our community engineers in our Discord or Forum to get 24/7 developer support.