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How to get transaction changes from version to version

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 from version to version​

In order to get transaction changes from version to version, Blocklens provides you a getTransactionChangesFromVersionToVersion endpoint to do so.

Here you'll need parameters: from_version, to_version.

Once you've obtained all the from_version, to_version, 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.getTransactionChangesFromVersionToVersion({"from_version":271891980,"to_version":271891981});
  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.eyJpZCI6MjcxODkxOTgwMDAwMDAwLCJwYWdlIjoxLCJmcm9tX3ZlcnNpb24iOjI3MTg5MTk4MCwidG9fdmVyc2lvbiI6MjcxODkxOTgxLCJpYXQiOjE2OTcwNjA1MTl9._xAxAQzKrAoixGfr3hwvsvkshcx8vhKG1EwlNUY_A6I",
  "page": 1,
  "limit": 20,
  "total_items": 1,
  "data": [
    {
      "block_height": 95397542,
      "timestamp": 1695436683,
      "transaction_version": 271891981,
      "transaction_type": "user_transaction",
      "transaction_hash": "0x361a18bc1ee54c2f29067a40f0c33457347cfe95166ba89d078f0157b637285c",
      "type": "write_table_item",
      "address": "null",
      "state_key_hash": "0xd33f6ca8e6e6e40f8cf31184f5a3b36ea8bc7acbc2d95cba0a07409def9c8798",
      "block_hash": "0x7114cc9d55eb93377a5f8a1f375807a6ebec3f65826217ddb02a71af777e71e7",
      "change_index": "11",
      "data": "null",
      "data_type": "null",
      "handle": "0x56efc89bbf2806f6ebe1c7cece92c00ea2d775eef46f6e1798116bf0cbb0519a",
      "key": "0x11fbd91e4a718066891f37958f0b68d10e720f2edf8d57854fb20c299a119a8c",
      "resource": "null",
      "success": true,
      "value": "0x7a524f6300000000f92bc956b9e25f38a2e4829b58f03ca9724233985cdda3f818bc3e62d6ed7d9c00000000000000000000",
      "vm_status": "Executed successfully"
    }
  ]
}

Congratulations 🥳 you just found the get transaction changes from version to version 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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