Lightning Network Payment Integration for Your Website

Integrating Lightning Network payments into your website is the modern standard for crypto stores, streaming billing, and micro-payment platforms. The cost depends on the complexity of integration and required features.

On-chain Bitcoin works well for storage but not for daily payments: fees of $1–20 during congestion, confirmation times of 10–60 minutes. Lightning Network (LN) solves this—instant transactions for fractions of a cent. Lightning Network is 100x cheaper and 1000x faster than on-chain. Our team has extensive experience integrating LN into websites: we have launched 30+ projects for e-commerce, donation platforms, and DeFi applications. We guarantee stable channel operation and liquidity automation. For example, with 1,000 payments of $5 each, savings on fees amount to about $150 per month compared to on-chain.

Which architecture to choose: own node or custody?

The first decision is the level of control. An own LN node (LND or Core Lightning) gives full control, zero intermediary fees, and scalability. However, it requires managing channels and liquidity. Custody solutions (OpenNode, Strike, BTCPay Cloud) are simpler but you trust a third party. For stores with turnover >1000 sat/day, an own node pays for itself in 3–6 months. For production LND, a VPS with 4 vCPU, 8GB RAM, and 500GB SSD is required, plus Bitcoin Core and PostgreSQL. We use Ubuntu 22.04 LTS.

Why choose LND for production?

Lightning Labs is the most stable and documented LN daemon. In production we use LND with a Bitcoin full node and PostgreSQL for high availability. Example config:

# Minimal lnd.conf for production
[Application Options]
alias=MyShop-LN
color=#FF6600
maxpendingchannels=5

[Bitcoin]
bitcoin.active=1
bitcoin.mainnet=1
bitcoin.node=bitcoind

[Bitcoind]
bitcoind.rpchost=localhost
bitcoind.rpcuser=bitcoinrpc
bitcoind.rpcpass=strongpassword
bitcoind.zmqpubrawblock=tcp://127.0.0.1:28332
bitcoind.zmqpubrawtx=tcp://127.0.0.1:28333

[protocol]
protocol.wumbo-channels=true

Managing LN channel liquidity

The main operational complexity of LN is inbound liquidity. A payment only succeeds if there are channels on the path with sufficient funds. Strategies:

1. Lightning Pool — buy inbound liquidity on the marketplace from Lightning Labs (cost 0.1-0.5% of the amount).
2. Loop In — submarine swap: on-chain BTC → LN, you get an inbound channel (fixed fee ~2000 sat).
3. Partner nodes — open channels with large players (ACINQ, Kraken), they often open inbound channels (0% fee, but requires negotiation).

Strategy comparison:

// Loop In to replenish inbound liquidity
const loopdClient = new LoopClient(LOOPD_HOST)

async function increaseInboundLiquidity(amountSats: number): Promise<void> {
  const quote = await loopdClient.loopInQuote({ amt: amountSats })
  console.log(`Loop In quote: ${quote.swap_fee_sat} sats fee, ${quote.miner_fee_sat} sats miner fee`)
  await loopdClient.loopIn({
    amt: amountSats,
    max_swap_routing_fee: quote.swap_fee_sat,
    max_miner_fee: quote.miner_fee_sat,
    external_htlc: false,
  })
}

Invoices and payment processing

LND provides a gRPC API. For Node.js we use @lightningpolar/lnd. Create an invoice linked to an order.

import { createLnRpc } from '@lightningpolar/lnd'

const lnRpc = await createLnRpc({
  server: 'localhost:10009',
  tls: fs.readFileSync('/home/bitcoin/.lnd/tls.cert'),
  macaroon: fs.readFileSync('/home/bitcoin/.lnd/data/chain/bitcoin/mainnet/invoice.macaroon'),
})

async function createInvoice(amountSats: number, orderId: string, expirySeconds = 3600) {
  const invoice = await lnRpc.addInvoice({
    value: amountSats,
    expiry: expirySeconds,
    r_preimage: crypto.randomBytes(32),
  })

  await db('ln_invoices').insert({
    order_id: orderId,
    payment_hash: Buffer.from(invoice.r_hash).toString('hex'),
    payment_request: invoice.payment_request,
    amount_sats: amountSats,
    expires_at: new Date(Date.now() + expirySeconds * 1000),
    status: 'pending',
  })

  return {
    paymentRequest: invoice.payment_request,
    paymentHash: Buffer.from(invoice.r_hash).toString('hex'),
    expiresAt: new Date(Date.now() + expirySeconds * 1000),
  }
}

Tracking payment—use the SubscribeInvoice stream. Do not poll status: LND will notify you of the event.

Step-by-step LND setup for production

1. Install Bitcoin Core and wait for synchronization (IBD can take 2-3 days on good hardware).
2. Install LND, configure lnd.conf (as above), start.
3. Create a wallet via lncli create, save the seed.
4. Open channels: at least 2-3 channels with sufficient liquidity to receive payments.
5. Set up automatic liquidity management (e.g., via LND Autopilot or custom scripts).
6. Integrate API: invoice creation, WebSocket for notifications.
7. Monitoring: Prometheus + Grafana, alerting for low liquidity.

What is included in the work

• Deployment of Bitcoin Core + LND on VPS (4 vCPU, 8GB RAM, 500GB SSD)
• Channel setup and initial liquidity
• API endpoints for creating/checking invoices
• WebSocket payment notifications
• Operational documentation and monitoring (Prometheus + Grafana)
• 30 days of post-launch support

Contact us to evaluate your project. We implement turnkey: from hosting selection to UX with QR code and timer. Request a consultation—we will help you choose the optimal architecture for your business.