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How to get transaction changes by hash

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 transaction changes by hash​

In order to get transaction changes by hash, Blocklens provides you a getTransactionChanges endpoint to do so.

Here you'll need a parameter: transaction_hash.

Once you've obtained the transaction_hash, 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.getTransactionChanges("0x12259c8b5a0f51320bb1b64dfb2b1b61e24aaa127318b0cf92d209525f0d5447");
  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": 1,
        "timestamp": 1,
        "transaction_version": 1,
        "transaction_type": "block_metadata_transaction",
        "transaction_hash": "0xbf3d139d0bbe68f1db6d393b135c2ed12ab5ec1635f08b26994180d1e6434dd1",
        "type": "write_resource",
        "address": "0x1",
        "state_key_hash": "0x7b1615bf012d3c94223f3f76287ee2f7bdf31d364071128b256aeff0841b626d",
        "block_hash": "0x33ff405ce7f5e1cff01eccff5c5ee93a532f69c7ce641ab907d6908ab3807da1",
        "change_index": "1",
        "data": "{\"type\":\"0x1::timestamp::CurrentTimeMicroseconds\",\"data\":{\"microseconds\":\"1695436685674336\"}}",
        "data_type": "0x1::timestamp::CurrentTimeMicroseconds",
        "handle": "0x1b854694ae746cdbd8d44186ca4929b2b337df21d1c74633be19b2710552fdca",
        "key": "0x0619dc29a0aac8fa146714058e8dd6d2d0f3bdf5f6331907bf91f3acd81e6935",
        "resource": "null",
        "success": true,
        "value": "0xbe43205d6f5877010000000000000000",
        "vm_status": "Executed successfully"
      }
    ]
  }
]

Congratulations 🥳 you just found the get transaction changes by hash 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​

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