send-sol.ts

import "dotenv/config";
import {
  getExplorerLink,
  getKeypairFromEnvironment,
} from "@solana-developers/helpers";
import {
  Connection,
  LAMPORTS_PER_SOL,
  PublicKey,
  SystemProgram,
  Transaction,
  clusterApiUrl,
  sendAndConfirmTransaction,
} from "@solana/web3.js";
import { createMemoInstruction } from "@solana/spl-memo";

const connection = new Connection(clusterApiUrl("devnet"));

const sender = getKeypairFromEnvironment("SECRET_KEY");

console.log(
  `🔑 Loaded our keypair securely, using an env file! Our public key is: ${sender.publicKey.toBase58()}`
);

// Add the recipient public key here
const recipient = new PublicKey("YOUR_RECIPIENT_HERE");

console.log(`💸 Attempting to send 0.01 SOL to ${recipient.toBase58()}...`);

const transaction = new Transaction();

const sendSolInstruction = SystemProgram.transfer({
  fromPubkey: sender.publicKey,
  toPubkey: recipient,
  lamports: 0.01 * LAMPORTS_PER_SOL,
});

transaction.add(sendSolInstruction);

const addMemoInstruction = createMemoInstruction("Hello from Solana!");

transaction.add(addMemoInstruction);

const signature = await sendAndConfirmTransaction(connection, transaction, [
  sender,
]);

const explorerLink = getExplorerLink("transaction", signature, "devnet");

console.log(`✅ Transaction confirmed, explorer link is: ${explorerLink}!`);