5.4 Purchase Verified Node

Once your DApp is registered, you can purchase a Verified Node to provide insurance coverage. This process involves staking assets into the node to ensure coverage for your DApp.

Code Example: Purchase Verified Node

// async function purchaseVerifiedNode(connection, payer, nodeId, stakeAmount) {
  const program = anchor.workspace.InsuranceDAO;
  
  // Fetch Verified Node details
  const verifiedNode = await program.account.verifiedNode.fetch(nodeId);

  // Ensure sufficient funds for staking
  if (payer.balance < stakeAmount) {
    throw new Error('Insufficient balance to stake for this node');
  }

  // Prepare transaction to stake assets into Verified Node
  const transaction = new anchor.web3.Transaction();
  transaction.add(
    program.instruction.purchaseVerifiedNode(
      nodeId, 
      stakeAmount, 
      {
        accounts: {
          payer: payer.publicKey,
          verifiedNode: verifiedNode.publicKey,
          systemProgram: SystemProgram.programId,
        },
      }
    )
  );

  // Send transaction to stake funds into the node
  const signature = await connection.sendTransaction(transaction, [payer], { skipPreflight: false, preflightCommitment: 'confirmed' });
  console.log(`Transaction confirmed with signature: ${signature}`);
}

Explanation:

• The purchaseVerifiedNode function allows you to stake funds into a Verified Node, providing insurance coverage for your DApp.

• nodeId specifies which Verified Node you are purchasing, and stakeAmount indicates the amount to be staked.