Qvard Blog

Guides for crypto payments, stablecoins, hosted checkout, API integration and merchant operations.

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Integrations

WordPress crypto payments

How to accept crypto payments on WordPress and WooCommerce without a ready-made plugin: the two pieces of code, where they go and what usually breaks.

2026-05-17 · 6 min read
Gateway basics

Crypto payment gateway for businesses

Crypto payment gateway for businesses. Plain-language guide to how crypto payment gateways work for online businesses.

2026-05-04 · 1 min read
Gateway basics

Crypto acquiring vs crypto payment gateway

Crypto acquiring and a crypto payment gateway: what the terms mean, how they differ from card acquiring, and what to check before you accept crypto.

2026-05-05 · 5 min read
SaaS and invoicing

Crypto invoicing for B2B SaaS

How to let B2B customers pay SaaS invoices in crypto: when to create the payment, how to reconcile, handle short payments, renewals and refunds.

2026-05-19 · 6 min read
Gateway basics

How a custodial crypto payment gateway works

How a custodial crypto payment gateway works. Plain-language guide to how crypto payment gateways work for online businesses.

2026-05-03 · 1 min read
Ecommerce

Crypto payments for digital goods stores

How a store that sells keys, accounts, downloads and subscriptions can take crypto: the delivery flow, partial payments, repeated webhooks and what to promise customers.

2026-05-15 · 8 min read
SDK

Crypto pay button: add a pay with crypto button to your site

Crypto pay button guide: how to add a pay with crypto button to your site, what the planned SDK button is and what works today. With code. Step by step.

2026-10-12 · 2 min read
POS

Crypto POS system: how a point-of-sale system can take crypto

Crypto POS system explained: how a point-of-sale system can accept crypto, what Qvard plans for its POS terminal and what works today through the API.

2026-10-13 · 2 min read
Comparison

Hosted checkout vs custom checkout

Hosted or custom checkout for crypto payments: what each means, why Qvard works through a hosted page today, what you can still design yourself around it and when a custom checkout is worth waiting for.

2026-05-18 · 4 min read
Ecommerce

Crypto payments for ecommerce

How an online store can add crypto as a payment method: where it fits at checkout, order statuses, partial payments, refunds, accounting in dollars and what is ready today.

2026-05-12 · 6 min read
Comparison

Payment gateway vs crypto wallet for merchants

Should a business take crypto into its own wallet or through a payment gateway? What each does, where a plain wallet is enough, and what a gateway adds for orders, statuses and reconciliation.

2026-05-01 · 4 min read
Host-to-Host API

Crypto payment API: how server-to-server payments work

Crypto payment API guide: create a payment from your server with POST /api/v1/payment, get a redirectUrl and receive the final status by webhook.

2026-10-12 · 2 min read
USDT

How to accept USDT TRC20 payments

What accepting USDT on TRON (TRC20) involves for a business: why it is the most common stablecoin rail, how a payment flows, and the mistakes to avoid.

2026-05-13 · 6 min read
Retail

Accept crypto in store: how a physical shop can take crypto today

How to accept crypto in a physical store: the point-of-sale flow, what the Qvard terminal plans, and the working path with the API today. Step by step.

2026-10-12 · 2 min read
Gateway basics

How to choose a crypto payment provider

How to choose a crypto payment provider. Plain-language guide to how crypto payment gateways work for online businesses.

2026-05-06 · 1 min read
Webhooks

How to secure crypto payment webhooks

What protects a payment webhook endpoint: checking the API key header, idempotent handling, exact status codes, retries and logging. Based on how Qvard webhooks really work.

2026-05-04 · 6 min read
SaaS

Crypto payments for SaaS

How a SaaS company can take crypto: invoice per period instead of card-on-file, renewal flow, partial payments, accounting in dollars and what not to promise customers.

2026-05-17 · 6 min read
Stablecoins

Stablecoin payments for B2B invoices

How to let business customers pay invoices in stablecoins: choosing the network, one payment per invoice, who bears fees, short payments, reconciliation and what to agree in advance.

2026-05-15 · 6 min read
Terminal

Crypto payment terminal: what it is and what works today

Crypto payment terminal explained: a point-of-sale device for crypto payments, what is on the Qvard roadmap and what works today with the API.

2026-10-12 · 2 min read
Ecommerce

Crypto checkout for online stores

Crypto checkout for online stores. What crypto payments change for online stores, from checkout to reconciliation.

2026-05-13 · 1 min read
TON

TON payment gateway for merchants

TON payment gateway for merchants. TON payments in practice: speed, checkout experience and merchant setup.

2026-05-07 · 1 min read
Comparison

USDT vs USDC for business payments

How USDT and USDC differ for a business accepting payments: issuers, reach among customers, networks, risks and why most merchants accept both.

2026-05-20 · 4 min read
Invoices

How crypto invoices work

How crypto invoices work. How crypto invoices behave: amounts, exchange rates, lifetimes and edge cases.

2026-05-12 · 1 min read
Marketplaces

Crypto checkout for multi-vendor platforms

Crypto checkout for multi-vendor platforms. Payment flows for marketplaces: sub-merchants, settlement and statuses.

2026-05-05 · 1 min read
Mini apps

Telegram mini app payments: taking crypto inside a mini app

Telegram mini app payments explained: taking crypto inside a Telegram mini app, what Qvard plans for mini app checkout and the working path with the API today.

2026-10-14 · 2 min read
TON

How to accept USDT on TON

How to accept USDT on TON. TON payments in practice: speed, checkout experience and merchant setup.

2026-05-08 · 1 min read
Guide

Stablecoin payments for subscriptions

How to bill subscriptions in stablecoins when the customer sends each payment themselves: one payment per period, reminders, a grace period and what happens when a renewal is missed.

2026-05-18 · 2 min read
Invoices

What happens when a crypto payment is late

What happens when a crypto payment is late. How crypto invoices behave: amounts, exchange rates, lifetimes and edge cases.

2026-05-15 · 1 min read
Guide

How ecommerce stores can accept USDT

The decisions an online store owner makes when accepting USDT: how to show prices, whether to offer it alongside cards, how to handle refunds and support, and when it pays off.

2026-05-14 · 3 min read
Stablecoins

Embed a stablecoin checkout in your online store

Embed a stablecoin checkout (USDT, USDC) in your online store: how to use the embedded widget, browser-side and server-side payment creation, and webhook verification.

2026-10-14 · 3 min read
SDK

JavaScript crypto payment example: a working flow with the live API

JavaScript crypto payment example: a working flow with the live v1 API, a server call and a webhook, plus the planned SDK call marked as roadmap.

2026-10-14 · 2 min read
Events

Crypto payments at events: taking crypto at markets and festivals

Crypto payments at events explained: taking crypto at markets and festivals, what Qvard plans for event terminals and the working path with the API today.

2026-10-14 · 2 min read
Host-to-Host API

Host-to-host payment gateway explained

What a host-to-host payment gateway is: server-to-server payments with a redirect to hosted checkout and a final webhook, explained for merchants.

2026-10-14 · 2 min read
Conversion

Accept crypto without a redirect: Qvard’s embedded checkout

Accept crypto without redirect using Qvard’s embedded checkout widget. A JavaScript widget on your page, two ways to create payments, and webhook verification. Why embedded checkout matters and how it works.

2026-10-13 · 3 min read
Conversion

On-site crypto checkout vs redirect: conversion and trade-offs

Embedded crypto checkout vs redirect: how each model affects conversion, control, and effort. Qvard's embedded widget is live. Compare the two models and choose the right approach.

2026-10-13 · 3 min read
SDK

Low-code crypto payments: what it means and what works today

Low-code crypto payments explained: a low-code way to accept crypto with less integration code. What is on the Qvard roadmap and what works today.

2026-10-13 · 2 min read
SDK

Crypto checkout popup: how a payment popup works and what is planned

Crypto checkout popup explained: how a payment popup works, what the Qvard SDK plans for it and what you can run today. With code. Step by step.

2026-10-13 · 2 min read
QR

QR code crypto payments: how a scanned code leads to a payment

QR code crypto payments explained: how a scanned code leads to a crypto payment page, what Qvard plans for QR at the terminal and what works today.

2026-10-13 · 2 min read
Digital goods

Sell digital goods in Telegram for crypto: a practical guide

How to sell digital goods in Telegram for crypto: the order flow, what Qvard plans for Telegram checkout and the working path with the API today.

2026-10-13 · 2 min read
Invoices

Telegram crypto invoice: send a crypto invoice from your bot

Telegram crypto invoice explained: how to send a crypto invoice from a Telegram bot, the planned Qvard chat invoice and what works today via the API.

2026-10-13 · 2 min read
Webhooks

Crypto payment webhook: handling id and status

Crypto payment webhook guide: receive the final status as a POST with id and status, check your x-api-key header and update orders safely. With code.

2026-10-13 · 2 min read
Integration

Backend crypto payment integration: step by step

Backend crypto payment integration step by step: create payments from your server, redirect customers, verify webhooks and reconcile orders.

2026-10-13 · 2 min read
Embedded checkout

Embedded crypto checkout: a payment modal on your own site

Embedded crypto checkout: integrate a live payment modal or inline form via JavaScript. Server-side and browser-side payment creation, webhook verification, and demo.

2026-10-12 · 3 min read
Embedded checkout

Crypto payment widget: how to add it to your website

Crypto payment widget guide: integrate the Qvard embedded checkout widget on your site. Two payment creation methods, webhook signature verification, and demo.

2026-10-12 · 3 min read
SDK

Crypto checkout JavaScript SDK: what is planned and what works today

Crypto checkout JavaScript SDK explained: a planned script that opens the payment window, what is on the Qvard roadmap and what works today.

2026-10-12 · 2 min read
Telegram

Accept crypto payments in Telegram: what is planned and what works today

How to accept crypto payments in Telegram: a bot-based flow, what the Qvard Telegram checkout plans and the working path with the API today.

2026-10-12 · 2 min read
Telegram bots

Telegram bot crypto payments: add crypto payment to your bot

Telegram bot crypto payments: how to add crypto payment to a Telegram bot, what the planned Qvard checkout is and the working path with the API today.

2026-10-12 · 2 min read
Host-to-Host API

Create a crypto payment and get a redirectUrl

How to create a crypto payment and get a redirectUrl in one API call: POST /api/v1/payment, the x-api-key header, an amount in your currency (USD by default) and a redirect to checkout.

2026-10-12 · 2 min read
Networks

Ethereum payments for online business

Ethereum payments for online business. Which coins and networks to accept, and what that means for checkout and fees.

2026-05-20 · 1 min read
Payment links

Payment links vs invoices for crypto merchants

Payment links vs invoices for crypto merchants. Taking crypto payments through payment links, with no code required.

2026-05-20 · 1 min read
SaaS

How SaaS teams reconcile crypto payments

How SaaS teams reconcile crypto payments. Crypto payments for SaaS teams: subscriptions, invoicing and reconciliation.

2026-05-20 · 1 min read
Integrations

Crypto payment button for websites

How to add a Pay with crypto button to a website: why the button cannot call the payment API directly, the three-step pattern, working front-end and server code, and what to protect.

2026-05-20 · 4 min read
Networks

Bitcoin payments for businesses

Bitcoin payments for businesses. Which coins and networks to accept, and what that means for checkout and fees.

2026-05-19 · 1 min read
Payment links

Crypto payment links for support teams

Crypto payment links for support teams. Taking crypto payments through payment links, with no code required.

2026-05-19 · 1 min read
Comparisons

Custodial vs non-custodial crypto payments

Custodial vs non-custodial crypto payments. A clear side-by-side comparison to help you pick the right payment setup.

2026-05-19 · 1 min read
Integrations

Crypto payments for custom backends

A backend-agnostic walkthrough of integrating Qvard into your own server: the order model, creating the payment, the webhook, reconciliation and a go-live checklist, with Python examples.

2026-05-19 · 5 min read
Networks

TON vs TRON for USDT payments

TON vs TRON for USDT payments. Which coins and networks to accept, and what that means for checkout and fees.

2026-05-18 · 1 min read
Payment links

How to use payment links in Telegram sales

How to use payment links in Telegram sales. Taking crypto payments through payment links, with no code required.

2026-05-18 · 1 min read
Integrations

WooCommerce crypto payments

How to add crypto as a WooCommerce payment method: a custom gateway class, creating the Qvard payment, the webhook that completes the order, and the WooCommerce-specific pitfalls.

2026-05-18 · 6 min read
Networks

TRC20 vs ERC20 vs BEP20 for payments

How the three most common stablecoin networks differ for a business accepting payments: fees, addresses, the wrong-network risk and how to choose which ones to offer.

2026-05-17 · 5 min read
Payment links

Payment links for crypto payments

Payment links for crypto payments. Taking crypto payments through payment links, with no code required.

2026-05-17 · 1 min read
Comparison

Crypto payments vs card payments

An honest comparison of crypto and card payments for a business: reach, chargebacks, refunds, fees, customer friction, accounting and when to offer both.

2026-05-17 · 5 min read
USDT

How to handle USDT underpayments

Why a USDT payment arrives short, what the partial status means, how to decide between asking for the difference and refunding, and how to prevent it with clearer checkout wording.

2026-05-16 · 5 min read
Invoices

Fiat-denominated crypto invoices

Fiat-denominated crypto invoices. How crypto invoices behave: amounts, exchange rates, lifetimes and edge cases.

2026-05-16 · 1 min read
Guide

Crypto payments for cross-border ecommerce

What crypto payments change for a store that sells abroad: fewer failed payments, one dollar price, no card network between you and the buyer, and what they do not solve.

2026-05-16 · 2 min read
Operations

Merchant operations checklist for crypto payments

A practical checklist for running crypto payments day to day: what to check before launch, every day, every week and every month, and what to do when something looks wrong.

2026-05-16 · 5 min read
Stablecoins

Stablecoin payment operations checklist

Stablecoin payment operations checklist. Why stablecoins suit payments: fixed rates, simple checkout and predictable operations.

2026-05-16 · 1 min read
USDT

USDT on TON for merchant payments

USDT on TON for merchant payments. What accepting USDT means in practice: networks, checkout and settlement details.

2026-05-15 · 1 min read
Operations

Handling duplicate and delayed blockchain payments

Handling duplicate and delayed blockchain payments. Operational playbook: balances, withdrawals, monitoring and reconciliation.

2026-05-15 · 1 min read
USDT

USDT payment gateway for businesses

USDT payment gateway for businesses. What accepting USDT means in practice: networks, checkout and settlement details.

2026-05-14 · 1 min read
Invoices

How to recover underpaid crypto invoices

How to recover underpaid crypto invoices. How crypto invoices behave: amounts, exchange rates, lifetimes and edge cases.

2026-05-14 · 1 min read
Operations

How to monitor blockchain scanner health

How to monitor blockchain scanner health. Operational playbook: balances, withdrawals, monitoring and reconciliation.

2026-05-14 · 1 min read
Stablecoins

How fixed exchange rates work in stablecoin payments

What a fixed exchange rate means in a crypto payment: why prices are set in dollars, what is fixed for one hour, how it differs for stablecoins and volatile coins, and what to do with late payments.

2026-05-14 · 4 min read
Invoices

Invoice lifetime and fixed exchange rates

Invoice lifetime and fixed exchange rates. How crypto invoices behave: amounts, exchange rates, lifetimes and edge cases.

2026-05-13 · 1 min read
Operations

Reports and exports for crypto accounting

Reports and exports for crypto accounting. Operational playbook: balances, withdrawals, monitoring and reconciliation.

2026-05-13 · 1 min read
Stablecoins

Stablecoin checkout for online merchants

Stablecoin checkout for online merchants. Why stablecoins suit payments: fixed rates, simple checkout and predictable operations.

2026-05-13 · 1 min read
Guide

How to accept USDT payments

A practical guide to accepting USDT from customers: why businesses choose it, how the flow works, which network to offer, how to handle short payments and what to do with the money afterwards.

2026-05-12 · 4 min read
Operations

Payment reconciliation for crypto merchants

How to reconcile crypto payments with your orders and balance: what to log, the daily checks, how to find missed webhooks and short payments, and how to account for fees and withdrawals.

2026-05-12 · 5 min read
Stablecoins

Why businesses use stablecoin payments

Why businesses use stablecoin payments. Why stablecoins suit payments: fixed rates, simple checkout and predictable operations.

2026-05-12 · 1 min read
Guide

How to accept stablecoin payments from clients

How agencies, freelancers and service businesses can take stablecoin payments from clients: one payment per invoice, what to tell the client, handling short payments and recording the result.

2026-05-11 · 3 min read
Checkout

Smart checkout for crypto payments

Smart checkout for crypto payments. How to shape a checkout where paying with crypto feels simple for customers.

2026-05-11 · 1 min read
Settlement

Withdrawal thresholds for crypto settlement

Withdrawal thresholds for crypto settlement. Operational playbook for balances, withdrawals and settlement rules.

2026-05-11 · 1 min read
Security

Risk controls for crypto payment gateways

Risk controls for crypto payment gateways. Security essentials for merchant accounts: keys, access controls and audit trails.

2026-05-11 · 1 min read
TON

How TON transactions affect checkout UX

How TON transactions affect checkout UX. TON payments in practice: speed, checkout experience and merchant setup.

2026-05-11 · 1 min read
Acceptance

Crypto payments for international customers

A practical checklist for selling to customers in other countries and accepting crypto: pricing in dollars, networks, fees, short payments, time zones, refunds, taxes and what to confirm before launch.

2026-05-10 · 5 min read
Checkout

Payment status page vs hosted checkout

Payment status page vs hosted checkout. How to shape a checkout where paying with crypto feels simple for customers.

2026-05-10 · 1 min read
Operations

Network fees in crypto payment operations

Who pays which fee in a crypto payment: the sender network fee, exchange withdrawal fees, the gateway commission and the fee when you withdraw, and how to plan and communicate them.

2026-05-10 · 4 min read
Security

2FA for crypto merchant accounts

2FA for crypto merchant accounts. Security essentials for merchant accounts: keys, access controls and audit trails.

2026-05-10 · 1 min read
TON

TON vs Ethereum for payment checkout

TON vs Ethereum for payment checkout. TON payments in practice: speed, checkout experience and merchant setup.

2026-05-10 · 1 min read
Accept crypto

How to accept cryptocurrency without building wallets

How to accept cryptocurrency without building wallets. Practical steps to start accepting crypto payments, from first invoice to go-live.

2026-05-09 · 1 min read
Checkout

How to brand a crypto checkout page

How to brand a crypto checkout page. How to shape a checkout where paying with crypto feels simple for customers.

2026-05-09 · 1 min read
Settlement

Merchant balances by coin and network

Merchant balances by coin and network. Operational playbook for balances, withdrawals and settlement rules.

2026-05-09 · 1 min read
Security

Audit log for merchant payment operations

Audit log for merchant payment operations. Security essentials for merchant accounts: keys, access controls and audit trails.

2026-05-09 · 1 min read
TON

TON payments for Telegram-first businesses

TON payments for Telegram-first businesses. TON payments in practice: speed, checkout experience and merchant setup.

2026-05-09 · 1 min read
Checkout

How checkout localization improves crypto conversion

How checkout localization improves crypto conversion. How to shape a checkout where paying with crypto feels simple for customers.

2026-05-08 · 1 min read
Settlement

Manual withdrawal flow for merchant balances

Manual withdrawal flow for merchant balances. Operational playbook for balances, withdrawals and settlement rules.

2026-05-08 · 1 min read
Security

IP whitelist for crypto payment API

IP whitelist for crypto payment API. Security essentials for merchant accounts: keys, access controls and audit trails.

2026-05-08 · 1 min read
Checkout

Hosted crypto checkout explained

Hosted crypto checkout explained. How to shape a checkout where paying with crypto feels simple for customers.

2026-05-07 · 1 min read
Settlement

Automatic withdrawals for crypto merchants

Automatic withdrawals for crypto merchants. Operational playbook for balances, withdrawals and settlement rules.

2026-05-07 · 1 min read
Security

API key scopes for payment systems

API key scopes for payment systems. Security essentials for merchant accounts: keys, access controls and audit trails.

2026-05-07 · 1 min read
API

How to test crypto payments in sandbox

How to test crypto payments in sandbox. Hands-on integration guide: API requests, redirects and webhook statuses.

2026-05-06 · 1 min read
Webhooks

Webhook logs for payment operations

Webhook logs for payment operations. Designing reliable payment webhooks: statuses, retries and security.

2026-05-06 · 1 min read
Marketplaces

How marketplaces handle payment statuses

How marketplaces handle payment statuses. Payment flows for marketplaces: sub-merchants, settlement and statuses.

2026-05-06 · 1 min read
International

Multi-currency invoices and crypto settlement

Multi-currency invoices and crypto settlement. How crypto payments help you sell to customers across borders and regions.

2026-05-06 · 1 min read
API

How to design a crypto payment webhook

How to design a crypto payment webhook. Hands-on integration guide: API requests, redirects and webhook statuses.

2026-05-05 · 1 min read
Webhooks

Final status webhooks for crypto invoices

Final status webhooks for crypto invoices. Designing reliable payment webhooks: statuses, retries and security.

2026-05-05 · 1 min read
International

Crypto payments for remote services

Crypto payments for remote services. How crypto payments help you sell to customers across borders and regions.

2026-05-05 · 1 min read
API

How redirectUrl works in crypto checkout

What the redirectUrl returned by the Qvard API is, what the customer sees on that page, how to use the link in a checkout or an email, and what it does not do for you.

2026-05-04 · 4 min read
Marketplaces

Sub-merchant crypto payment model

Sub-merchant crypto payment model. Payment flows for marketplaces: sub-merchants, settlement and statuses.

2026-05-04 · 1 min read
International

Stablecoin payments in emerging markets

Stablecoin payments in emerging markets. How crypto payments help you sell to customers across borders and regions.

2026-05-04 · 1 min read
API

How to create a crypto invoice by API

How to create a crypto invoice by API. Hands-on integration guide: API requests, redirects and webhook statuses.

2026-05-03 · 1 min read
Webhooks

Webhook retry strategy for payment systems

How Qvard retries a payment webhook, what counts as a failed delivery, and how to build a handler that survives retries, repeats and downtime without double-fulfilling an order.

2026-05-03 · 5 min read
Marketplaces

Marketplace settlement with crypto balances

Marketplace settlement with crypto balances. Payment flows for marketplaces: sub-merchants, settlement and statuses.

2026-05-03 · 1 min read
Regions

Accepting payments from customers without cards

How a business can get paid by customers who cannot or will not use a card: who these customers are, what they need to pay in crypto, how to help them through the first payment and what to plan for.

2026-05-03 · 5 min read
API

Crypto payment API for developers

A practical reference to the Qvard payment API: authentication, creating a payment, the redirect URL, payment statuses, webhooks, method availability and payouts, with errors and what is not there yet.

2026-05-02 · 6 min read
Webhooks

How crypto payment webhooks work

How crypto payment webhooks work. Designing reliable payment webhooks: statuses, retries and security.

2026-05-02 · 1 min read
Marketplaces

Crypto payments for marketplaces

Crypto payments for marketplaces. Payment flows for marketplaces: sub-merchants, settlement and statuses.

2026-05-02 · 1 min read
International

Crypto payments for global businesses

Crypto payments for global businesses. How crypto payments help you sell to customers across borders and regions.

2026-05-02 · 1 min read
Networks

BNB Smart Chain payments for merchants

BNB Smart Chain payments for merchants. Which coins and networks to accept, and what that means for checkout and fees.

2026-05-01 · 1 min read
Payment links

No-code crypto payments with payment links

No-code crypto payments with payment links. Taking crypto payments through payment links, with no code required.

2026-05-01 · 1 min read
SaaS

Payment links for SaaS sales teams

Payment links for SaaS sales teams. Crypto payments for SaaS teams: subscriptions, invoicing and reconciliation.

2026-05-01 · 1 min read
Integrations

Embedded checkout widget for crypto payments

Embedded checkout widget for crypto payments. Connecting crypto payments to your platform: plugins, APIs and widgets.

2026-05-01 · 1 min read