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How to get transactions from time to time

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 transactions from time to time​

In order to get transactions from time to time, Blocklens provides you a getTransactionsFromTimeToTime endpoint to do so.

Here you'll need parameters: from_time, to_time.

Once you've obtained all the from_time, to_time, 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.getTransactionsFromTimeToTime({"from_time":"1696048259","to_time":"1696048260"});
  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.eyJpZCI6Mjc5OTgyMjYxLCJwYWdlIjoxLCJmcm9tX3RpbWUiOiIxNjk2MDQ4MjU5IiwidG9fdGltZSI6IjE2OTYwNDgyNTkiLCJpYXQiOjE2OTcwNjEyNjB9.mw3VFHoDlxZQ7aX4lh6OtqoN39TlBqpaa9V03K2Ns4Y",
  "page": 1,
  "limit": 20,
  "total_items": 1,
  "data": [
    {
      "block_height": 97922847,
      "timestamp": 1696048259,
      "version": 279982272,
      "type": "state_checkpoint_transaction",
      "hash": "0x1adfaeab579710755df94577da225f5e1bff4700d749b2cca3889663545f9885",
      "sender": "null",
      "receiver": "null",
      "function": "null",
      "amount": 0,
      "gas_used": 0,
      "accumulator_root_hash": "0xf1e8ce6ffb971b87e317fb15ce04515a57eee071e89b8730d5b303ccdb85e3c8",
      "block_hash": "0x5cbc98d7ca9a0493bf14606b1adfc4f2e60b995dddafb372b93ba1b330dfa73f",
      "epoch": -2147483648,
      "event_root_hash": "0x414343554d554c41544f525f504c414345484f4c4445525f4841534800000000",
      "expiration_time": "2023-09-30 04:30:59",
      "gas_unit_price": 0,
      "max_gas_limit": 0,
      "proposer": "null",
      "round": -2147483648,
      "sequence_number": 0,
      "signature": "null",
      "smart_contract": "null",
      "state_change_hash": "0xafb6e14fe47d850fd0a7395bcfb997ffacf4715e0f895cc162c218e4a7564bc6",
      "success": true,
      "vm_status": "Executed successfully"
    }
  ]
}

Congratulations 🥳 you just found the get transactions from time to time 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.