BTC

Last updated 18 days ago

BTC

The Bitcoin SDK provides an interface to interact with Bitcoin blockchains using SegWit (P2WPKH) transactions. It supports wallet connectivity, transaction preparation, and balance checking, using the bitcoinjs-lib library for core functionality.

Wallet setup

To generate new Bitcoin WIF (Wallet Import Format) private keys for P2WPKH wallets, you can use the following tools:

(testnet)

Get tokens on the testnet

For testing process, you can use following links to get token on the testnet

Initialization

Import the SDK and create a new instance:

import { BTC } from "@kynesyslabs/demosdk/xm-websdk"

const rpc_url = "https://blockstream.info/testnet/api";
const network = BTC.networks.testnet;

const instance = await BTC.create(rpc_url, network);

Wallet connect

Connect your wallet using a private key in WIF format:

const privateKeyWIF = "cTb..."; // Your WIF private key
await instance.connectWallet(privateKeyWIF);

You can view the connected wallet’s address using the getAddress method:

const address = instance.getAddress();
console.log(`Address: ${address}`);

Create payload for the token transfer

Prepare a signed transaction to transfer BTC using preparePay method:

const receiverAddress = "tb1q...";
const amount = "560"; // Amount in satoshis

const signedTx = await instance.preparePay(receiverAddress, amount);

The signedTx is a hex-encoded signed transaction ready for use in a DEMOS transaction.

Create payload for the multiple transfers

You can create multiple Bitcoin transfer payloads by using the preparePays method as shown:

const transfers = [
    { address: "tb1q...", amount: "550" },
];
const signedTxs = await instance.preparePays(transfers);

The signedTxs is an array of hex-encoded signed transaction payloads.

Checking Balance

You can check the balance of the connected wallet, including change addresses as shown:

const balance = await instance.getBalance();
console.log(`Balance: ${balance} satoshis`);

Resources

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Last updated 18 days ago