Crypto payment
gateway development
Crypto payments for websites, services and platforms: invoices, payment links, APIs and merchant dashboards. Choose an architecture from provider integration to your own payment processing system.
A short description of your project is enough to start.
01 / CHOOSE AN APPROACH
When do you need a custom processor?
An existing API may be enough to add crypto payments. A custom system makes sense when you need specific settlement rules, multiple merchants or control over the infrastructure.
Integrate crypto payments
Connect a selected provider to your website or CRM: invoice creation, payment states and event handling.
Integrate crypto payments into your productBuild a payment gateway
Custom APIs, checkout, dashboards and reconciliation rules. Define networks, key management and external service dependencies.
Develop a B2B platform
Multiple merchants, projects, roles, fees and payout controls. Capacity and operational requirements are scoped separately.
Provider integration or a custom system
| Consideration | Existing provider | Custom system |
|---|---|---|
| Functionality | Depends on the service’s APIs and supported features. | Rules and interfaces are built around the product. |
| Infrastructure | The provider operates part of the payment system. | Hosting, monitoring and support need to be designed. |
| Integrations | Review supported networks, assets and access conditions. | Select nodes, APIs, exchange services and key management. |
Connect provider APIs, invoices, payment verification and order statuses. A focused service for your existing website or app.
02 / DELIVERABLES
From invoice to confirmed payment
Detecting a transfer and confirming a payment are different stages. We define states and transitions so orders and payments stay consistent.
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Invoice and payment link
Create an invoice with an order, amount, asset, network and expiry.
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Transaction tracking
Detect transfers and wait for the agreed confirmation criteria.
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APIs and notifications
Authenticated webhooks, retries and duplicate-credit prevention.
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Dashboards and reconciliation
History, states, projects, roles and reports for merchants and operators.
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Documentation and launch
API and state documentation, deployment instructions and an agreed support plan.
03 / COST AND TIMELINE
An estimate for your payment workflow
Crypto payment processing development cost depends on architecture, networks and supported operations. A provider integration can cover some of those tasks through an existing service.
Payment infrastructure
Networks, tokens, confirmations, keys, addresses and crediting rules.
Merchants and integrations
Roles, CMS and CRM connections, APIs, fees, reports and reconciliation.
Payouts and operations
Limits, payout approvals, conversion, monitoring and capacity.
04 / A FREEBLOCK PROJECT
Awex
A B2B service for a cryptocurrency exchange, connecting payment links, user dashboards and an external API.
Read the full case (RU)The task
Build a payment-link service with payment, project and user management.
What we built
- Payment links, user dashboards and an admin panel.
- Exchange API integration and payment address rotation.
- Projects, two-factor authentication and CMS integration.
Awex demonstrates exchange-connected payment workflows. Your processing architecture and dependencies are scoped separately.
05 / ARCHITECTURE AND VALIDATION
Handle exceptions before launch
Every exception needs a state, an owner and a next action. These rules belong in the payment workflow and support interface.
Partial and excess payments
Define tolerances and procedures for additional payment, manual reconciliation or an agreed refund.
Late payments and wrong networks
Distinguish expired invoices from late transfers. Wrong-network transfers require investigation; recovery is not always possible.
Duplicate events and permissions
Authenticate notifications and prevent duplicate crediting. Separate API access, operator permissions and payout signing.
Automated conversion and fiat settlement depend on the selected provider, access conditions and supported routes. Technical integration and onboarding are assessed separately.
Technologies and integrations
Backend and APIs
Node.js, NestJS and TypeScript. REST APIs, WebSocket and webhooks for the required integrations.
Payment networks
Bitcoin, Ethereum, TRON and other agreed networks. BTC, ETH and USDT are integrated as specific asset–network pairs.
Dashboards and operations
React, transaction records and Docker. Client infrastructure or provider APIs follow the selected architecture.
Technologies
Blockchains
Technical references: Crypto invoice lifecycle · API integration example
06 / PROCESS
How we work
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Map the payment flow
Define orders, assets, roles and settlement.
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Choose architecture
Compare provider APIs and a custom system.
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Build and validate
Test states, duplicate events and failures.
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Prepare operations
Hand over documentation, access and support procedures.
08 / FAQ
Before you start
Do I need a custom processor or an integration?
An existing provider’s API may be enough for crypto payments on your website. A custom system can suit specific settlement rules, multiple merchants or infrastructure control. We compare the options against your requirements.
Which cryptocurrencies can we accept?
We choose asset–network pairs such as BTC on Bitcoin, ETH on Ethereum or USDT on an agreed network. Provider support, token contract addresses, fees and confirmations are checked. Network support does not imply support for every token.
How is a crypto payment linked to an order?
The site creates an invoice with an order ID. The processor tracks payment and sends its status through an API or webhook. Notification authentication and duplicate handling help prevent double crediting.
How do you handle partial, excess or late payments?
Each case gets an agreed state and action: wait for more funds, review manually, refund or complete the order. Rules account for the network and provider. Wrong-network transfers need investigation and cannot always be recovered.
Can you add conversion and fiat settlement?
Yes, if the selected services support the required routes and client onboarding. We review APIs, limits, fees and access conditions. An interface feature does not replace a provider account and onboarding.
Where will the system run and how are keys managed?
Hosting and key management are defined in the architecture: client infrastructure, an external provider or an agreed combination. Signing permissions, payout limits and recovery are specified before development.
What determines crypto payment gateway development cost?
Provider integration versus custom infrastructure, network and merchant count, dashboards, payouts, conversion and operational requirements. Cost and timing are estimated against the agreed scope.
FREEBLOCK / LET’S TALK
Start with your project.
Tell us how orders work today, which assets you want to accept and how many merchants are involved. We will compare options and propose a first-phase scope.