Task Core Logic

The main function of this task will involve submitting 'Hello, World!' together with a user's Ethereum wallet address to IPFS and sending the corresponding CID as proof of work done to K2.

Update Dependency Imports

Navigate to the task/submission.js file, and update the dependency imports as follows:

/task/submission.js

require('dotenv').config();
const { namespaceWrapper } = require('../_koiiNode/koiiNode');
const { Web3Storage, File } = require('web3.storage');
const storageClient = new Web3Storage({
  token: process.env.SECRET_WEB3_STORAGE_KEY,
});
const nodeEthAddress = process.env.RECIPIENT_ADDRESS;

Task Main Logic

Still in task/submission.js file, replace the default task() method with the code below:

/task/submission.js

  async task(round) {
    try {
      const value = 'Hello, World!';
      // Create a submission object with the value and nodeEthAddress
      const submission = {
        value,
        nodeEthAddress,
      };
  
      // Convert the submission object into a Blob for structured data
      const blob = new Blob([JSON.stringify(submission)], {
        type: 'application/json',
      });
  
      // Create a File containing the Blob with a specified filename
      const files = [new File([blob], 'submission.json')];
  
      // Upload to IPFS
      const cid = await storageClient.put(files);
      console.log('stored files with cid:', cid);
  
      // Check if the CID was obtained
      if (cid) {
        // Store the CID under the 'value' key using namespaceWrapper
        await namespaceWrapper.storeSet('value', cid);
      }
  
      return cid;
    } catch (err) {
      console.log('ERROR IN EXECUTING TASK', err);
      return 'ERROR IN EXECUTING TASK' + err;
    }
  }

Here's a breakdown of the code's functionality:

• The submission object is created, consisting of:

  • value: This is set to a default value 'Hello, World!', which can be replaced with actual data.
  • nodeEthAddress: The node's Ethereum address which will be injected as an environment variable.

• The submission object is transformed into a Blob which is then used to create a File named submission.json.

• The file is uploaded to IPFS using the storageClient.put and the obtained CID is stored using the namespaceWrapper.storeSet.