Skip to main content

How to get erc20 token burns from a block to a 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 ERC20 token burns from a block to a block​

In order to get erc20 token burns from a block to a block, Blocklens provides you a getErc20BurnsByBlockRange 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.getErc20BurnsByBlockRange({"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:

{
  "cursor": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6MTgyNDYxNTAwMDcyMDAwMjIwLCJwYWdlIjoxLCJmcm9tQmxvY2siOjE4MjQ2MTUwLCJ0b0Jsb2NrIjoxODI0NjE1MSwiaWF0IjoxNjk3MDg0Mjc4fQ.LoK3SfrH3HiHpjCjNgXi10FtaVWtecqPYLIMuA8vVUc",
  "page": 1,
  "limit": 20,
  "total_items": 1,
  "data": [
    {
      "token_name": "Uniswap V2",
      "token_symbol": "UNI-V2",
      "token_decimals": 18,
      "contract_address": "0x9eAb4695d63f0561B3B10BeA44d847142749418C",
      "transaction_hash": "0xc015d99ae8d5e04716f192abf990565673cb7faf92693107acaa58ec5ca48fb3",
      "transaction_index": 28,
      "log_index": 44,
      "block_hash": "0x28f7522cc52594826d9853bf25d65ebb382650320ad791cd5434d955a9110d82",
      "block_number": 18246151,
      "from_wallet": "0x9eAb4695d63f0561B3B10BeA44d847142749418C",
      "value": "13945038230496178851",
      "value_decimal": "13.945038230496178851",
      "timestamp": 1696048283
    }
  ]
}

Congratulations 🥳 you just found the get erc20 token burns from a block to a 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.