How can I use cryptocurrency in my Node.js application?
You can use libraries like 'web3.js' for Ethereum or 'bitcoinjs-lib' for Bitcoin to interact with blockchain.
Can you show me a simple example of sending Bitcoin using bitcoinjs-lib?
Sure! First, install the library using npm. Then, you can create a transaction like this:
const bitcoin = require('bitcoinjs-lib');
const keyPair = bitcoin.ECPair.fromWIF('your-private-key');
const { address } = bitcoin.payments.p2pkh({ pubkey: keyPair.publicKey });
// Create and sign the transaction here
What about handling Ethereum transactions?
For Ethereum, you can use 'web3.js'. Here's a basic example:
const Web3 = require('web3');
const web3 = new Web3('https://your-ethereum-node');
const account = web3.eth.accounts.privateKeyToAccount('your-private-key');
// Send transaction code here
Are there any security concerns I should be aware of?
Yes, always keep your private keys secure, use HTTPS for your nodes, and consider using hardware wallets for large amounts.
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