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This guide demonstrates how to create, sign, and broadcast a transaction using the Adamik API along with a TON signer. This tutorial is perfect for developers who want to leverage Adamikto power their TON workflow, ensuring secure and efficient transaction management.

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Prerequisites

  • Node.js and npm installed
  • Basic understanding of TON blockchain and transaction workflows
  • Familiarity with the TON libraries (@ton/crypto, @ton/ton)

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Step-by-Step Guide

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1. Setting Up the Environment

Ensure you have the required TON libraries installed in your project: 
npm install @ton/crypto @ton/ton node-fetch

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2. Writing the Script

Below is the script that handles the full transaction flow, from creating a wallet to broadcasting the signed transaction. You can find the complete code example in the Adamik GitHub repository. 
import { mnemonicToPrivateKey, sign } from "@ton/crypto";
import { WalletContractV4 } from "@ton/ton";

// Replace with your wallet's mnemonic phrase
const walletPhrase = "your mnemonic phrase here";
// Replace with your Adamik API key from https://dashboard.adamik.io
const ADAMIK_API_KEY = "your-adamik-api-key";
// Replace with recipient address or leave empty for self-transfer
const recipientAddress = "";

async function main() {
  try {
    console.log("Creating wallet...");
    const keyPair = await mnemonicToPrivateKey(walletPhrase.split(" "));

    // Define the workchain and create a wallet contract
    let workchain = 0;
    let wallet = WalletContractV4.create({
      workchain,
      publicKey: keyPair.publicKey,
    });
    const address = wallet.address.toString();

    console.log("Wallet created: ", address);

    // Prepare the transaction request
    const requestBody = {
      transaction: {
        data: {
          chainId: "ton", // TON blockchain
          mode: "transfer",
          senderAddress: address,
          recipientAddress: recipientAddress || address,
          amount: "10000",
          useMaxAmount: false,
          fees: "0", // Set fees to 0 for now
          gas: "0", // Gas is not required on TON
          memo: "", // Optionally, add a memo
          format: "hex",
          validatorAddress: "",
          params: {
            pubKey: keyPair.publicKey.toString("hex"),
          },
        },
      },
    };

    console.log("Encoding transaction...");
    // Encode the transaction with Adamik API
    const responseEncode = await fetch(
      "https://api.adamik.io/api/ton/transaction/encode",
      {
        method: "POST",
        headers: {
          Authorization: ADAMIK_API_KEY,
          "Content-Type": "application/json",
        },
        body: JSON.stringify(requestBody),
      }
    );

    const encodedData = await responseEncode.json();
    console.log(
      "Encoded transaction data:",
      JSON.stringify(encodedData, null, 2)
    );

    // Sign the encoded transaction
    const tx = encodedData.transaction.encoded;
    console.log("Signing transaction...");
    // Sign the encoded transaction
    const signature = sign(
      Buffer.from(encodedData.transaction.encoded, "hex"),
      keyPair.secretKey
    ).toString("hex");
    console.log("Transaction signed");

    // Prepare to broadcast the signed transaction
    const sendTransactionBody = {
      transaction: {
        data: encodedData.transaction.data,
        encoded: tx,
        signature: signature,
      },
    };

    console.log("Broadcasting transaction...");

    // Broadcast the transaction using Adamik API
    const responseBroadcast = await fetch(
      "https://api.adamik.io/api/ton/transaction/broadcast",
      {
        method: "POST",
        headers: {
          Authorization: ADAMIK_API_KEY,
          "Content-Type": "application/json",
        },
        body: JSON.stringify(sendTransactionBody),
      }
    );

    const responseData = await responseBroadcast.json();
    console.log("Transaction Result:", JSON.stringify(responseData, null, 2));
    console.log("Transaction hash:", responseData.hash);
  } catch (error) {
    console.error("Error:", error);
  }
}

main();

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3. Explanation

  • Key Pair Generation: The script generates a key pair from a mnemonic phrase using the @ton/crypto library, which is helpful for managing private keys and signing transactions on TON. Please note Adamik API doesn’t have the custody of the assets.
  • Transaction Encoding: The transaction details, such as sender, recipient, and amount, are passed to the Adamik API, which encodes the transaction for signing.
  • Signing and Broadcasting: The encoded transaction is signed using the private key, and the signed transaction is then broadcast to the TON blockchain via the Adamik API.

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4. Troubleshooting

  • Invalid API Key: Ensure your Adamik API key is correct and up to date.
  • Network Issues: Verify network availability and Adamik API status.
  • Security Note: Never hardcode sensitive information such as mnemonic phrases or private keys in your production environment.

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5. Get in Touch

Connect with us through our Discord Server or directly through GitHub.
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