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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.APTOS_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:

[
  {
    "cursor": "string",
    "page": 0,
    "limit": 0,
    "total_items": 0,
    "data": [
      {
        "block_height": 48569766,
        "block_time": "2023-06-13 18:17:09.819",
        "timestamp": 1686655029819390,
        "transaction_version": 125033617,
        "transaction_hash": "0xdf4b0d8b621cd39e3d3dc4e24f82f0ad045014653aa0ccee9256810e1db3c8ef",
        "transaction_type": "block_metadata_transaction",
        "creation_number": 3,
        "account_address": "0xb723f7fb05992065f97b0562bf5a6eac95f6044134efd2ee2bf95607eb1942c7",
        "sequence_number": 17,
        "type": "0x1::coin::WithdrawEvent",
        "event_index": 1,
        "amount": 4441891,
        "module_name": "0x6173736574",
        "struct_name": "0x6173736574",
        "data": "{\"amount\": \"11385\"}",
        "block_hash": "0xa9f9ea4852444a91a1d259175f4e51a9c13715391dbf91e16992c130eb31f3c5",
        "success": true,
        "vm_status": "Executed successfully"
      }
    ]
  }
]

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.