How to Integrate Crypto Payments Into a Website or Online Store

Accepting cryptocurrency is no longer a niche option-it’s becoming a core payment method for modern online businesses. Whether you run an e-commerce shop, a SaaS platform, a hosting company, or a digital marketplace, crypto payments help you reach customers worldwide, reduce payment friction, and eliminate expensive banking intermediaries.

But how do you integrate crypto into your site properly?
How do you avoid custodial services, KYC, and unpredictable fees?
And how do you ensure your checkout flow remains fast, secure, and easy for customers?

This guide breaks down the entire process step-by-step using today’s most flexible and developer-friendly approach: self-hosted, open-source crypto payment processing. A leading example of such a tool is Crypto processor SHKeeper, which allows businesses to receive cryptocurrency directly to their wallets without relying on third-party payment providers.

Why Crypto Payments Matter for Online Stores

Before integrating anything, it’s useful to understand why crypto has become such an attractive payment option.

1. Borderless access 

Crypto works the same in every country- no banks, no restrictions, no approvals.

2. Instant settlement

Payments land in your wallet within minutes, not days.

3. Zero chargebacks

Once a transaction is confirmed, it cannot be reversed.

4. Lower operating costs

Self-hosted processors allow you to accept payments with 0% commission, ideal for high-volume stores.

5. Privacy-focused transactions

Customers can pay without exposing sensitive financial information.

Two Paths to Accepting Crypto: Hosted vs. Self-Hosted

Businesses typically choose between two integration models:

Hosted custodial services

• Managed by a third-party provider
• Require full identity verification
• Can freeze payouts
• Charge percentage fees

Useful for beginners, but severely limiting.

Self-hosted non-custodial processing

• Entire system runs on your server
• You remain the sole owner of wallets and private keys
• No one can block, freeze, or delay payments
• Zero KYC
• Zero fees

This model is ideal for privacy-conscious businesses, and it’s where SHKeeper excels.

Choosing the Right Self-Hosted Crypto Processor

A proper crypto processor should offer:

• Multi-currency support
• Direct wallet-to-wallet payments
• API integrations
• Free plugins for CMS platforms
• Non-custodial architecture
• Full customization

SHKeeper checks all these boxes, offering a powerful self-hosted software for crypto transactions solution for businesses that want complete control over their payment flow.

Step-by-Step: How to Integrate Crypto Payments

The process below works for any online platform, from custom codebases to WordPress stores.

Step 1: Set Up a Server

To host the processor, you need:

• 4 CPU cores
• 4GB RAM
• 20GB SSD

More resources are needed only if you run full nodes for certain blockchains. Many coins, including Bitcoin, now work with public nodes via SHKeeper, lowering hardware requirements.

Step 2: Install the Crypto Processor

SHKeeper supports installation via:

• Docker
• Kubernetes
• Manual environment setup

Once installed, you can access the dashboard directly on your server.

Step 3: Connect Your Wallets

SHKeeper automatically detects wallets and supports:

• BTC
• ETH & ERC20 tokens
• LTC
• DOGE
• XRP
• XMR
• TRX / TRC20
• BNB / BEP20
• SOL
• MATIC
• AVAX
• FIRO
• Stablecoins across multiple chains

You can choose whether to receive payments to hot wallets or cold storage.

Step 4: Configure Checkout Rules

Businesses can enable:

• Custom exchange rates
• Overpayment handling
• Partial payments
• Auto-withdrawals to cold wallets
• Multi-coin invoices

This custom logic helps stores manage payments the same way they manage fiat orders.

Step 5: Integrate the Processor With Your Platform

There are two main integration routes:

A) CMS Plugins

SHKeeper provides free plugins for:

• WooCommerce
• WordPress
• WHMCS 

Just install the module, enter your API key, and enable crypto as a checkout option.

B) Custom API Integration

For custom stores, marketplaces, SaaS products, or mobile apps, use the API to:

• Create invoices dynamically
• Generate blockchain addresses
• Receive callbacks when payments are confirmed
• Sync payments with databases or CRMs 

This allows full control over your checkout flow.

Step 6: Test the Payment Flow

Before going live:

• Create a test invoice
• Send a small transaction
• Confirm callbacks are received
• Verify that the order status updates correctly

This ensures a smooth customer experience.

How Customers Experience Crypto Checkout

A typical customer interaction looks like this:

1. Customer selects Pay with Crypto
2. Chooses a cryptocurrency
3. Receives a QR code + payment address
4. Pays from a wallet or exchange
5. SHKeeper detects the transaction
6. Your system marks the order as Paid 

There’s no need for support intervention or manual confirmation.

Best Practices for Smooth Crypto Payment Integration

Offer fast networks

TRON, Polygon, Avalanche, and BNB Chain are ideal for low-fee, high-speed payments.

Enable automatic withdrawals

Secures funds while reducing manual work.

Provide clear instructions

Simple checkout UX increases conversion rates.

Monitor confirmations

Most businesses require 1–2 confirmations depending on the coin.

Crypto Payments Are Easier Than Ever

Adding crypto payments to a website or online store no longer requires complex infrastructure or risky custodial services. With tools like Crypto processor SHKeeper, businesses can launch a fully private, fee-free, censorship-resistant payment system operated entirely on their own servers.

Whether you’re looking to expand internationally, reduce operational costs, or offer customers more payment freedom, self-hosted crypto processing is one of the most powerful upgrades you can add to your e-commerce stack.