Solana Devnet Development Tutorials, Guides & Insights

Create a new file called index.js and add the following code to connect to the Solana blockchain:

const solanaWeb3 = require('@solana/web3.js');

// Connect to the Solana Devnet
const connection = new solanaWeb3.Connection(
  solanaWeb3.clusterApiUrl('devnet'),
  'confirmed'
);

console.log('Connected to Solana Devnet');

async function getNewTokens(startSlot) {
  try {
    const currentSlot = await connection.getSlot();
    const signatures = await connection.getConfirmedSignaturesForAddress2(
      new solanaWeb3.PublicKey(solanaWeb3.TOKEN_PROGRAM_ID),
      { startSlot, limit: 100 }
    );

    console.log('Newly Created Tokens:');
    for (const signatureInfo of signatures) {
      const transaction = await connection.getConfirmedTransaction(signatureInfo.signature);
      const transactionInstructions = transaction.transaction.message.instructions;

      transactionInstructions.forEach((instruction) => {
        if (instruction.programId.equals(solanaWeb3.TOKEN_PROGRAM_ID)) {
          const data = Buffer.from(instruction.data);
          const command = data.readUInt8(0);

          // Command 1 represents the Token Mint To instruction
          if (command === 1) {
            const mintAccount = instruction.keys[0].pubkey.toBase58();
            console.log(`- New Token Mint: ${mintAccount}`);
          }
        }
      });
    }
  } catch (error) {
    console.error('Error fetching new tokens:', error);
  }
}

// Replace with the starting slot number
const startSlot = 1000000;
getNewTokens(startSlot);

• Token Program ID: The TOKEN_PROGRAM_ID is used to filter transactions that involve token operations. We're interested in the Mint To instruction, which indicates new token creation.
• Fetch Signatures: We fetch the confirmed signatures for transactions involving the SPL Token Program starting from a specified slot.
• Process Instructions: We inspect the transaction instructions to identify those that correspond to the Mint To operation, which indicates token creation.

   nano tests/counter.js

Add the following JavaScript code: