The gateway can handle much of the crypto-specific processing in the background, including wallet addresses, QR-based payments, blockchain transaction monitoring, payment confirmation, and settlement. The existing checkout can simply add crypto as another payment option.

For example, after a customer selects cryptocurrency, the gateway can generate the payment details, monitor the blockchain transaction, confirm the required network confirmations, and send the payment status back to the merchant's existing system.

Businesses should also consider:

• API integration: Connect crypto payments with the current checkout and order system.

• Multiple cryptocurrencies: Support relevant assets and blockchain networks.

• Automatic verification: Confirm transactions without manual payment checks.

• Webhooks: Update order status automatically after payment confirmation.

• Settlement: Define whether funds remain in crypto, convert to another asset, or follow a scheduled settlement process.

• Security: Protect wallet information, API credentials, and transaction data.

This approach lets businesses add crypto payments while keeping much of their existing checkout experience intact. The key is choosing a payment infrastructure that can integrate with the systems already in place rather than requiring the entire payment flow to be rebuilt.